I am using Historische Zeitschrift Style and the probem I have is that it capitalises some of the things it shouldn't. Let me try to explain.  Here is my MWE:  \documentclass[a4paper,11pt]{scrartcl} \usepackage[latin1]{inputenc} \usepackage{csquotes} \usepackage{blindtext} \usepackage{filecontents} \usepackage{hyperref} \hypersetup{     colorlinks,      citecolor=black,      filecolor=black,      linkcolor=black,      urlcolor=black } \begin{filecontents}{\jobname.bib}  @incollection{athanasius1998,     Address = {Berlin/New York},     Author = {{Athanasius Alexandrinus}},     Booktitle = {Athanasius Werke - Die dogmatischen Schriften},     Call-Number = {TH: Vb 17.02-1.1.2},     Date-Added = {2010-10-16 13:24:30 +0200},     Date-Modified = {2014-03-13 17:12:32 +0000},     Editor = {Marin Tetz and others},     Keywords = {source},     Pages = {109-175},     Publisher = {Walter de Gruyter},     Read = {No},     Series = {Urkunden zur Geschichte des Arianischen Streites 318-328},     Shortauthor = {Ath.},     Shorttitle = {Ar. 1},     Title = {Oratio I contra Arianos},     Volume = {1, Tl. 1, Lfg. 2},     Year = {1998}} @incollection{evagrius2011,     Address = {Paris},     Author = {{Evagrius Scholasticus}},     Booktitle = {{\'E}vagre Le Scholastique: Histoire Eccl{\'e}siastique - Livres I-III},     Call-Number = {TH: Va1.05/542},     Date-Added = {2013-08-24 12:11:20 +0000},     Date-Modified = {2014-03-30 11:54:31 +0000},     Editor = {Joseph Bidez and Leon Parmentier},     Keywords = {source},     Publisher = {Les {\'E}ditions du Cerf},     Series = {Sources chr{\'e}tiennes},     Shortauthor = {Evagr.},     Shorttitle = {h.e.},     Title = {Historia ecclesiastica},     Volume = {542},     Year = {2011}} \end{filecontents} \usepackage[ngerman]{babel} \usepackage[style=historische-zeitschrift, maxnames=2, hyperref=true, backref=true, backrefstyle=none, backend=bibtex,idemtracker=true]{biblatex} \bibliography{\jobname} % \makeatletter \renewbibmacro*{footcite}{%   \global\boolfalse{cbx@loccit}%   \global\boolfalse{cbx@seenote}% NEW!   \ifciteseen     {\iffieldundef{shorthand}        {\ifthenelse{\ifciteibid\AND\NOT\iffirstonpage}           {\usebibmacro{footcite:ibid}}           {\usebibmacro{footcite:note}}}        {\usebibmacro{footcite:shorthand}}}        {\iffieldundef{usera}          {\usebibmacro{footcite:full}}{\printnames{author}%        \setunit{\addcomma\space}%        \printfield{title}\isdot%          {\setunit{\addcomma\space}%           \usebibmacro{in:}%           \printfield{usera}%           \setunit*{\addspace}%           \printfield[default]{volume}}}}      \usebibmacro{footcite:save}} \makeatother % \begin{document} \blindtext\footcite[See][S. 56]{athanasius1998} \blindtext\footcite[See][S. 22]{evagrius2011} \blindtext\footcite[See][S. 11]{athanasius1998} \blindtext\footcite[See][S. 12]{evagrius2011} \end{document}   When I compile that this is what I get:    The letter "W" (marked with the red arrow) should here be small but because Shorttitle of that entry has a dot at the end (h.e.) it capitalises the first letter in the brackets.  If you compare it with the previous entry (Ar. 1) you will notice that that one doesn't have capital "W".  So how do I make it stop capitalising "W"? Thanks in advance for your help!

I would like to consistently have a comma between the journal and volume number for article references using biblatex with biber as the backend. Unfortunately, the punctuation between the journal and volume is not consistent. Journals whose last word is abbreviated have no comma between the journal and the volume, and the word "Vol." is capitalized. Journals whose last word is not abbreviated have a comma and the word "vol." is not capitalized. I can fix the capitalization by un-commenting the commented lines in the below MWE, but the comma problem is quite perplexing. Apologies if this fix is in an answer somewhere, but I cannot find it (or at least, I don't know what to search for!).  Current output: [1] First Author. “Blah Blah 2”. In: Am. J. Phys. Vol. 72, no. 3 (Mar. 2004), pp. 367–375. [2] Second Author. “Blah blah”. In: Energy Fuel, vol. 27, no. 12 (Dec. 2013), pp. 7778–7789.  Expected output: [1] First Author. “Blah Blah 2”. In: Am. J. Phys., vol. 72, no. 3 (Mar. 2004), pp. 367–375. [2] Second Author. “Blah blah”. In: Energy Fuel, vol. 27, no. 12 (Dec. 2013), pp. 7778–7789.  MWE:  \documentclass{article} \usepackage{filecontents} \usepackage[     backend=biber,     citestyle=numeric-comp, ]{biblatex} \addbibresource{\jobname} % \DefineBibliographyStrings{english}{%     % volume = {\lowercase{v}ol\adddot}, % avoid capitalization after dots. % } \DeclareFieldFormat[article]{volume}{\bibstring{volume}\addspace #1} \DeclareFieldFormat[article]{number}{\bibstring{number}\addspace #1} \renewbibmacro*{volume+number+eid}{%   \printfield{volume}%   \setunit{\addcomma\space}%<---- was \setunit*{\adddot}%   \printfield{number}%   \setunit{\addcomma\space}%   \printfield{eid}} \renewbibmacro*{journal+issuetitle}{%   \usebibmacro{journal}%   \setunit*{\addcomma\addspace}%<---- was \setunit*{\addspace}%   \iffieldundef{series}     {}     {\newunit      \printfield{series}%      \setunit{\addspace}}%   \usebibmacro{volume+number+eid}%   \setunit{\addspace}%   \usebibmacro{issue+date}%   \setunit{\addcolon\space}%   \usebibmacro{issue}%   \newunit}  \begin{filecontents*}{\jobname.bib} @article{York2004, author = {Author, First}, journal = {Am. J. Phys.}, month = mar, number = {3}, pages = {367--375}, title = {{Blah Blah 2}}, volume = {72}, year = {2004} } @article{Baumgardner2013a, author = {Author, Second}, journal = {Energy Fuel}, month = dec, number = {12}, pages = {7778--7789}, title = {{Blah blah}}, volume = {27}, year = {2013} } \end{filecontents*}  \begin{document} \nocite{*} \printbibliography \end{document}


I had installed VirtualBox but it started giving me problems. So I uninstalled it using:-  sudo apt-get remove virtualbox-\* sudo apt-get purge virtualbox-\*   But when I reinstalled VirtualBox it again resumed to previous settings and started giving same problems. How can i completely remove VirtualBox from my laptop and then reinstall it such that it wont give same problem again?

Can anyone help me remove VirtualBox?  I am running 12.04.


I am wondering if there is a way that I could make a back up of programs or the packages used for installation.   I usually have a handful of programs installed and sometimes I end up having to reinstall my programs whenever I mess something up with the Ubuntu install.  These are either by  'apt-get' or by the GNOME store.  So I cannot install by a '.deb' package for all programs I have.  So I am wondering if there is a way to excract a program or the packages so that if I need to reinstall them, I can easily do so.

If I want to make a backup of everything I have done since the fresh install of Ubuntu, what are the possible options? What all should I backup? I want to get all the settings that I changed, all the packages I installed, etc.


I'm getting two columns from two different tables using sql server 2005.. For that I used the following query..  SELECT [MHD].JobPostingId,        [C].CandidateName    FROM         Candidate as C RIGHT JOIN MemberHiringDetails MHD                        ON [MHD].MemberId=[C].Id   It returns the following data:  JobPostingId  CandidateName 60            aaa 60            bbb 63            aaa   NULL means, that candidate is erased from that table.. But I need output as follows:  JobPostingId  CandidateName 60            aaa, bbb 63            aaa   How to do this..? If it need stored procedure means, ok.. All I need is solution..

I'm trying to migrate a MySQL-based app over to Microsoft SQL Server 2005 (not by choice, but that's life).  In the original app, we used almost entirely ANSI-SQL compliant statements, with one significant exception -- we used MySQL's group_concat function fairly frequently.  group_concat, by the way, does this: given a table of, say, employee names and projects...  SELECT empName, projID FROM project_members;   returns:  ANDY   |  A100 ANDY   |  B391 ANDY   |  X010 TOM    |  A100 TOM    |  A510   ... and here's what you get with group_concat:  SELECT      empName, group_concat(projID SEPARATOR ' / ')  FROM      project_members  GROUP BY      empName;   returns:  ANDY   |  A100 / B391 / X010 TOM    |  A100 / A510   So what I'd like to know is: Is it possible to write, say, a user-defined function in SQL Server which emulates the functionality of group_concat?   I have almost no experience using UDFs, stored procedures, or anything like that, just straight-up SQL, so please err on the side of too much explanation :)


I have seen some codes to plot heart on matlab, e.g.        How can I prove/find from the theory how to plot a perfect heart?

It's not really a typical math question. Today, while studying graphs, I suddenly got inquisitive about whether there exists a function that could possibly draw a heart-shaped graph. Out of sheer curiosity, I clicked on Google, which took me to .  The page seems informative, and I am glad to learn certain new things! Now I am interested in drawing them by my own using Mathematica. So my question is: is it possible to draw them in Mathematica? If yes, please show me how.


I want to transform an old laptop with a broken screen into a server.   More specifically, I want to disable the behaviour that the computer enters into sleep stand when the lid is closed.  The question elsewhere on SO () does not answer to my specific question.  My question is: which package do I have to remove for preventing the computer to enter into sleep stand when closing the lid.

I would like closing the laptop lid to be a no-op. How can I do that?


"One example I can think of is the expiration labels on food."  It seems like you should say "is" because "example" is a singular noun, but the sentence sounds weird to me for some reason. Maybe "the" should be removed?

My fish's native habitat is rice fields. My fish's native habitat are rice fields.   Which one is correct? I'm pretty sure it's the first, since 'is' modifies 'habitat,' but it still sounds weird...


I am unable to install Ubuntu 16.04 in VMware Workstation 14 Player. I am stuck at the location option, and it is not going forward.

I'm running a Windows 10 64-bit host OS on a Dell XPS 9560 with 8GB of RAM.  I've installed Ubuntu 16.04 for programming purposes using VM Workstation, and currently allocated 1GB RAM for the Ubuntu 16.04 guest OS. From what I noticed now the VM's performance is a little slow from time to time, especially when starting an app (Like CLion IDE or Firefox for example).   I need a performance boost, so is there a way to increase the RAM size in the existing Ubuntu 16.04 guest OS, rather than having to install a whole new guest OS in VMware Workstation and allocate more RAM during the installation process?


I am reading Zorich's book "Analysis I" and ran into the following statement: Let $f:[a,b]\to \mathbb{R}$ and $f$ is continuous on $[a,b]$. Then $f$ is injective if and only if $f$ is strictly monotonic. Proof: $\Leftarrow$ is quite obvious. The most interesting part is $\Rightarrow$. Suppose that $f$ is not strictly monotonic. Then we can find three points $x_1<x_2<x_3$ from $[a,b]$ such that $f(x_2)$ does not lie in between $f(x_1)$ and $f(x_3)$. In this case $f(x_3)$ lies in between $f(x_1)$ and $f(x_2)$ or $f(x_1)$ lies in between $f(x_2)$ and $f(x_3)$. Question: Suppose $f$ is not strictly monotonic, i.e. $f$ is not strictly increasing and is not strictly decreasing. Then we can find points $x_1,x_2,x_3,x_4\in [a,b]$ such that $x_1<x_2$ with $f(x_1)\geq f(x_2)$ and $x_3<x_4$ with $f(x_3)\leq f(x_4)$. I have spent smth like couple of hours trying to derive that exists three points with the above properties as in Zorich's book but I failed. I'd be thankful if you can help me, please!

Show that if $f: \mathbb{R} \to \mathbb{R}$ is a continuous injective map, then it is strictly monotonic.    Could someone give me a proof for this? I have the intuition for why it's true - I'm just having trouble expressing that intuition in a rigorous manner. Basically consider two points $x_1, x_2 \in \mathbb{R}$. By the problem statement, $f$ is continuous on $[x_1, \, x_2]$. WLOG, assume that $f$ is strictly increasing. It there exists a point where it is not increasing, then $f$ hits a value twice, and it's not injective.


So, okay, I've been using Ubuntu 12.04 and this just came out yesterday when the launcher disappeared. I cant right click on screen 'cause nothing happens, I can open TTY with ctrl+alt F1, F2 and so on...I've been able to run a terminal with   DISPLAY=:0 gnome-terminal   And switch to it with Ctrl+alt+F7. I do this in case something goes wrong with TTY.  I also can run nautilus with   sudo nautilus  I can access to my desktop and files but everything looks bad and basic, I can't access to media e.g. a usb wich I want to backup my files in. Here are the things that I already tried:  DISPLAY=:0 ccsm  Which seems.to be okay, first time I went there Unity was unchecked and I checked it and clicked okay to the additional dialogs that checked another options also like OpenGL...After this, nothing happened. I rebooted like 6 times and same. Weird thing.is that when I reset to defaults the  Unity option unchecks itself.  unity --reset WARNING: no DISPLAY variable set, setting it to :0 ERROR: the reset option is now deprecated  Then I run the display =0 and it just goes.with the last error.   Updating nvidia Drivers Removing nvidia Drivers Installing nvidia Drivers ReInstalling nvidia drivers Same with Compiz, Unity, Unity Desktop, and Xorg. Reseting lightdm Changing to GDM Unity Tweak Tool Reseting compiz with dfcon-tool Installing Xubuntu to have the kind of back up desktop manager...but same ..nothing. I need to say this that I think is where the problem is... whenever I open Unity from the terminal and/or TTY, it crashes;  it loads the compiz (core) plugins but it stucks in:   .... compiz (core) - Info: Loading plugin: unityshell compiz (core) - Info: Starting plugin: unityshell Segmentation fault (core dumped)   There's a very limited info about this one and posts offer what I already my previous tries to solve the issue. Im sorry I cant put the complete  tty info as Im posting this from my phone ...thanks in.advance!! I really need some.files and pretty much tried everything out there!  :(

When I login, nothing happens.   I am presented with my desktop wallpaper.    No Dash, no Launcher, nothing.


I want to try my hand at a more professional style facial rig but I am not sure how to go about it.

Since asking for tutorials, videos, resources, links to other content or downloads is considered off topic here, this is a specifically created Community Wiki which gathers resources for Blender and it has been approved by the .  Just write in the appropriate answer/section. If you have concerns, questions, post a  question, so we don't clutter the comments, but you can link your meta question from the comments.  Questions regarding such resources are not allowed anymore, except for very specific and on topic requests (ask on  if you're unsure about your question). Follow the instructions made in the question about how to post, what can be posted, etc.  Learning             Assets    (also see: )   Reference Images/Blueprints (also see: )    Tools    (also see: )      Other   Special Interest ()     Also see the .


I have scanned with avast a few times for virus's but nothing has been found, however.. every time i leave my computer for about 5 minutes the process labelled 'system' which is the 'ntoskrnl.exe' bumps the CPU of the entire machine up to 20-24% which of course spins the fans up high..  The strangest bit, once I press a key or move mouse the machine recognises i am back and system drops off to next to nothing.. I have googled it but cannot see anything that matches this scenario so thought I would ask on here.      After reading through a link ()  from a commenter who has since removed their comment i arrived at..  This link () which I then found the item within system ramping up cpu is ntoskrnl.exe_misaligned_access+0x3f0  The guys reply in the above thread is to kill processes that end up there.. but I'm not sure if that is wise?    So i turned off the scheduled idle task and this has not made any difference, i just went away to get a coffee, returned to the sound of heavy fan use and cpu up to 20%.. the culprit in task manager, "system"

I have noticed that from some time my system is freezing and its probably caused by the high CPU usage which is caused by the system process.  All applications I'm running is the Skype, TeamSpeak and Chrome so it definitely shouldnt eat that amount of CPU.  You can see the problem itself and running processes in the screenshot below:    Sometimes CPU usage is reaching 90%, but the average usage is like 40-65%.  My PC parameters:   Windows 8 (customer preview) Intel Core i3 - 2350M 8 GB RAM   I'd appreciate any help attempt! Regards.  --UPDATE--  As the user below posted a great answer, I have noticed that the process that is eating the most CPU in the system is called Arthurx.sys, simple google tells that it's a TPLink driver (an wifi adapter, I have bought like 2 weeks ago!) drivers has been installed from the Windows MSDN, but also tried to install the drivers from the attached CD, but it doesn't help. From the system start, it is using like 5% of the CPU only, but after 2-4 hours of working it is growing up and reaching 40-60% of the CPU usage.  Device name: TPLink WN722N


My friends and I have this idea to make a game. None of us have much experience with programming. We think our idea is to big too accomplish. Should we present our idea to an indie company that can make it, or scrap the idea and start with something smaller? If we start with something smaller, what can you recommend us to use since we have little experience with programming?

I believe that in order to become a good game developer, you need to make games.   From a programmer's perspective, what are some good entry level games to get your hands dirty? What skills and challenges do each of these games teach you?


I am trying to read a book in Adobe Reader, and the zoom setting defaults to 61.3%. I then set it to 100%, but as soon as I click on another bookmark, it gets reset back to 61.3%. How can I make it stay on 100%?  I have looked around but can find no setting that seems to do this.  UPDATE: I found the latest version of Foxit Reader has a special provision for this that is nowhere to be found in Adobe Reader, and thus conclude that this is not possible in Adobe. Despite the infinite deluge of frequent updates.  Under the Default zoom setting, Foxit has the following checkbox (emphasis mine):     Forbid the change of the current Zoom factor during execution of 'Go   to Destination' actions (these actions can be launched from   bookmarks)

If I open a PDF document in Adobe Reader, it usually opens with Fit Width page zoom by default.     But if I click on a bookmark, the zoom changes to Fit Page.   How do I stop this from happening and have Adobe Reader maintain the default zoom?


How can I generate a bigger probability set from a smaller probability set? This is from Algorithm Design Manual -Steven Skiena Q:     Use a random number generator (rng04) that generates numbers from {0,1,2,3,4} with equal probability to write a random number generator that generates numbers from 0 to 7 (rng07) with equal probability?   I tried for around 3 hours now, mostly based on summing two rng04 outputs. The problem is that in that case the probability of each value is different - 4 can come with 5/24 probability while 0 happening is 1/24. I tried some ways to mask it, but cannot.   Can somebody solve this?

Given a function which produces a random integer in the range 1 to 5, write a function which produces a random integer in the range 1 to 7.   What is a simple solution? What is an effective solution to reduce memory usage or run on a slower CPU?


Lets look at the pythagoras $a^2+b^2=c^2$ for the integers $a,b,c$. Proof that one of components $a,b,c$ is always divisible by 3. How do i prove that?

Call a triple of integers $(a, b, c)$ a Pythagorean triple if $a^2 + b^2 = c^2$ , i.e., if $a, b, c \in \mathbb{N^*}$ are the (measures of) sides of a right triangle. Examples of Pythagorean triples are  (3, 4, 5), (5, 12, 13), (8, 15, 17) and (3312, 16766, 17090).  Show that if $(a, b, c)$ is a Pythagorean triple  if at least one of a and b is divisible by 3.  I think to begin with $a^2 + b^2 = c^2 \rightarrow a^2 - c^2 = b^2$ to show this. Then I get stuck to prove this?


In ECMA5 it says that the bitwise operators and shift operators operate on 32-bit ints, so in that case, the max safe integer is 2^31-1, or 2147483647.  However, the max safe integer otherwise is .  For my program, I need to potentially deal with integers between 2^32 and 2^53.  So, my question:  Currently in my code I do something like this:  value |= (byte & 127) << (7 * i);   This doesn't work with i past 4 because it will be over the max shift range of 31.  So is the only alternative doing something like.. this? (still working on it)  value += (byte & 127) * Math.pow(10, i * 7);   Not completely correct but close enough to the point.. basically having to simulate ORing to a bitshift to get around the JavaScript restriction of 31 shift limits.  Is there a better way?

I need to bitwise shift a value 64 times in JavaScript. But JavaScript starts rounding after 32.  For example:  for(var j = 0; j < 64; j++) {     mask = mask << 1;     console.log(mask); }   This prints value from 0 to 1073741824 but then rounds of and starts printing 0.


I try to calculate $\sum_{i=1}^{n-1} i\alpha^{2i}$ I think one week but still have no ideas to this sigma,thank everyone

I want to know the general formula for $\sum_{n=0}^{m}nr^n$ for some constant r and how it is derived.  For example, when r = 2, the formula is given by: $\sum_{n=0}^{m}n2^n = 2(m2^m - 2^m +1)$ according to   Thanks!


I made a calendar. I have .jpg texture that should be one page.   I just painted it with various colours because this is what it looks like in rendered view.    While .png texture works fine   The only thing I change in material setup is the image texture. Does anyone know what is happening here? It seems like blender has problems reading the .jpg or something.  EDIT: I did not post material setup, because it has nothing to with it 100%. Blender clearly has some issues with .png and .jpg formats.    I continued on my project and I came across another problem. Now I have this image, which is .png  Material setup is THE SAME, just texture to diff shader. This is what it looks like in viewport.   UVs are just faces covering the whole picture, like this:   But render looks ok, so I have no idea what is happening, I can work around it obviously, but it's strange at least :). Render:

I just selected some pixels in Photoshop and deleted them, so this part became transparent. I save it as PNG. And imported this image as texture for cycles material.  What surprised me is a "Material" and "Texture" view in 3D window, that displays pixels that should not exist anymore in the image.  From result it seems to me like Ph deleted completely only all pixels (color information) out of a box (rectangle) that determinate pixels with alpha. And for pixels inside this "non alpha" box he kept colors and alpha info.  Blender than displays only color info without alpha inside this rectangle. That is probably a bug, but I just even didn't know that PNG saves this pixels as well.   Am'I right? Or what is going on here?  Since the node tree consists from a "Transparent" shader as well, it displays alpha right, but not in a "Texture" method anyway.   Note: Render is OK.  So, the questions are:   How PNG file stores color/transparent data (this doesn't seem to be blender related, but only blender displays data in that way for me) Is this behaviour expected or is it a bug? (or any other user fault :)     Edit: probably more descriptive illustration


There are -p option in mkdir command to create parent directories as needed wolf@linux:~$ tree .  0 directories, 0 files wolf@linux:~$  wolf@linux:~$ mkdir dir1/dir2/dir3 mkdir: cannot create directory ‘dir1/dir2/dir3’: No such file or directory wolf@linux:~$  wolf@linux:~$ tree .  0 directories, 0 files wolf@linux:~$  wolf@linux:~$ mkdir -p dir1/dir2/dir3 wolf@linux:~$  wolf@linux:~$ tree  . └── dir1     └── dir2         └── dir3  3 directories, 0 files wolf@linux:~$   Are there similar features in vi or touch command? In this case, I would like to create file authorized_keys in nonexistent directory .ssh with vi or touch. authorized_keys is a file, and not a directory. Hence, mkdir -p .ssh/authorized_keys command is not applicable here as authorized_keys will be created as directory, not a file. wolf@linux:~$ ls .ssh ls: cannot access '.ssh': No such file or directory wolf@linux:~$   Would it be possible to do this without mkdir .ssh or mkdir -p .ssh? wolf@linux:~$ touch .ssh/authorized_keys touch: cannot touch '.ssh/authorized_keys': No such file or directory wolf@linux:~$

mkdir -p will create a directory; it will also make parent directories as needed.  Does a similar command exist for files, that will create a file and parent directories as needed?


I have a question I'm trying to answer. The question is      Let $(G, \circ )$ be a group where $a\circ a =e, \ \forall a\in G $. Show that $(G, \circ )$ is abelian. [Here $e$ is the identity element.]   How would you do this?

I'm having problems trying to figure this out. It seems very straight forward, but I don't know what I should do to prove it. Let $X$ be a set with an associative binary operation $\circ$ with identity $e$. Suppose every element of $X$ satisﬁes $x \circ x = e$. Prove that $\circ$ is commutative.


I would like to draw an app launcher icon with Inkscape but the official guide seems to miss some specs. In my understanding, to design a material design icon I just need to put some shapes together with different layers, and add drop shadow and long shadow for them respectively so they will have different elevations. However I can't find the specs for drop shadow and long shadow described in svg. Could anyone tell me the best specs that obey the guidelines?

Im new in material design and I want to start new design in this style. My problem is I don't know how to reproduce Elevation (z-axis). In image below i see 12 levels of Elevation, but how to create this levels in Photoshop?     Btw: I know that I have to use  Drop Shadow in Photoshop, but   what values do I set for each level of Elevation.   ()


How do I introduce a paired delimiter with \DeclarePairedDelimiter from mathtools, if the name that I want to use for the delimiter is already declared by some other package?  For example:  \documentclass{minimal}  \usepackage{mathtools} \usepackage{physics}  \DeclarePairedDelimiter{\norm}{\lvert\lvert}{\rvert\rvert}  \begin{document} I do not even need to use $\norm{v}$ to have an error. \end{document}   Note that, unlike  or  I am wondering about overriding an existing macro to make it a paired delimiter within the package mathttools, and not how to make a \newcommand with a name that has been already defined (in the latter case, I can, for example, \renewcommand).  Note that the question is not about how should you typeset a norm operator.  The reason why one may want to redefine a command in physics package as a mathtoolspaired delimiter is that a paired delimiter can open and close on two different lines.

After you define a command using \newcommand, is it possible to undefine it?  My motivation is that I'm writing a thesis, where each chapter is in a separate source file. Some chapters define their own commands that are used nowhere else, so I'd like them to be visible only within that chapter.   I'd therefore like to be able to do something like:  \chapter{Some Chapter} \newcommand{foo}{...} ... % chapter body \forgetcommand{foo} % end of chapter   Is there anything like the fictitious \forgetcommand macro above?


Although there are several posts on the Internet on the subject, I did not find a solution yet: my goal is to find a command that adds an icon (.desktop file) to the Unity launcher and shows it immediately. when I open dconf-editor (desktop > unity > launcher) and I add an item to the favorites list, it shows at once in the launcher, so my idea is that it must be possible to do the same thing by command. The solutions I found so far on the Internet do not do the job.    I need to do it by command, to use in a quicklist editor I am working on.  You would make someone unbelievably happy if you could help out

Based on official documentation:     In order to add your launcher to the Unity Launcher on the left, you   select and drag it onto the Launcher panel. Alternatively, you can   place your .desktop file at /usr/share/applications/ or at   ~/.local/share/applications/. After moving your file there, search for   it in the Dash (Windows key -> type the name of the application) and   drag and drop it to the Unity Launcher. Now your launcher (.desktop   file) is locked on the Unity Launcher!   It means, that you can add a launcher manually via "drag and drop". But, is it possible to do this programatically?  I can explain why I am asking about it:   I have my own scpirt, it downloads the latest version of Eclipse IDE, creates eclipse.desktop file without iteraction with User.  And on the last step I want to add Eclipse.desktop file to Unity Launcher and I do not want to ask user to do it.  I analized the spesification for *.desktop files and did get an answer.  Please provide advice.


$$m\angle EBC = 50° $$ $$m\angle ABE  = 30° $$ $$m\angle DCB = 60° $$ $$m\angle ACD = 20° $$   What is  $\alpha = m\angle CDE$?   It seems a bit confused. Where should I start from?  Regards

The following is a geometry puzzle from a math school book. Even though it has been a long time since I finished school, I remember this puzzle quite well, and I don't have a nice solution to it.  So here is the puzzle:    The triangle $ABC$ is known to be isosceles, that is, $AC=BC$. The labelled angles are known to be $\alpha=\gamma=20°$, $\beta=30°$. The task is to find the angle labelled "?".  The only solution that I know of is to use the sine formula and cosine formula several times. From this one can obtain a numerical solution. Moreover this number can be algebraically shown to be correct (all sines and cosines are contained in the real subfield of the 36th cyclotomic field). So in this sense I solved the problem, but the solution is kind of a brute force attack (for example, some of the polynomials that show up in the computation have coefficients > 1000000). Since the puzzle originates from a book that deals only with elemetary geometry (and not even trigonometry if I remember correctly) there has to be a more elegant solution.


I have got Chromium browser 78  /usr/bin$ chromedriver -v ChromeDriver 78.0.3904.70 (edb9c9f3de0247fd912a77b7f6cae7447f6d3ad5-refs/branch-heads/3904@{#800})   This installs latest stable release  sudo apt-get install chromium-browser    I would like to downgrade to 77 but if I try this  sudo apt-get install google-chrome=77.0.3865.40 Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package google-chrome   How can I downgrade to Chromium 77 and switch off the upgrade?

How can I downgrade a package to an older version via apt-get?  Other tools are also acceptable but apt-get is preferred.


To put it better, if A and B are non-invertible matrices (for whatever reason), can the matrix AB be invertible?  Just used to help understand a Linear Transformation assignment question, don't necessarily need an explanation as to why, but it would help. Thankyou.

If $A$ and $B$ are $n\times n$ matrices, and $AB$ is invertible then $A$ and $B$ are invertible.    I started out by writing that since $AB$ is invertible, then for the equation $ABx=b$ has a unique solution for any $b$, $x=(AB)^{-1}b$.  Then I don't know how to break up the composition of AB to prove they are each individually similar.


So, I am a newbie to js and don't have much knowledge of JSON... I was making a speech-assistant kind of thing with node and when I came upon weather I googled it...I just ctrl+c  ctrl+v somethings (I am just 14) The output I am getting is [   {     location:  {       name: 'Chennai, India',       zipcode: undefined,       lat: '13.012',       long: '80.221',       timezone: '5.5',       alert: '',       degreetype: 'F',       imagerelativeurl: 'http://blob.weather.microsoft.com/static/weather4/en-us/'     },     current: {       temperature: '86',       skycode: '31',       skytext: 'Mostly Clear',       date: '2020-07-24',       observationtime: '22:00:00',       observationpoint: 'Chennai, India',       feelslike: '99',       humidity: '79',       winddisplay: '8 mph South',       day: 'Friday',       shortday: 'Fri',       windspeed: '8 mph',       imageUrl: 'http://blob.weather.microsoft.com/static/weather4/en-us/law/31.gif'     },     forecast: [ [Object], [Object], [Object], [Object], [Object] ]   },   {     location: {       name: 'Chennai, India',       zipcode: undefined,       lat: '13.072',       long: '80.202',       timezone: '5.5',       alert: '',       degreetype: 'F',       imagerelativeurl: 'http://blob.weather.microsoft.com/static/weather4/en-us/'     },     current: {       temperature: '86',       skycode: '31',       skytext: 'Mostly Clear',       date: '2020-07-24',       observationtime: '22:00:00',       observationpoint: 'Chennai, India',       feelslike: '99',       humidity: '79',       winddisplay: '8 mph South',       day: 'Friday',       shortday: 'Fri',       windspeed: '8 mph',       imageUrl: 'http://blob.weather.microsoft.com/static/weather4/en-us/law/31.gif'     },     forecast: [ [Object], [Object], [Object], [Object], [Object] ]   } ]  (if you don't like the look of this then-->   ) Can anyone please help me get the values of things like temperature, sky text, humidity and same for the forecast Thanks a lot...

Given a string of JSON data, how can I safely turn that string into a JavaScript object?  Obviously I can do this unsafely with something like:  var obj = eval("(" + json + ')');   but that leaves me vulnerable to the JSON string containing other code, which it seems very dangerous to simply eval.


I'm trying to expand dev/sda7/ space using unlocated memory[587GB]. I'm not able to expand dev/sda7/ to unlocated memory resize option won't show the memory of unlocated. Is there a way to push unlocated memory into extended partition and resize dev/sda7 memory from there?

Previously, I have installed Windows 7 on my 320 GB laptop with three partitions 173, 84 and 63 GB each. The 63 GB partition was where the Windows was installed. The rest were for file containers.  Now I changed my OS to Ubuntu 12.04 LTS. I installed Ubuntu by replacing the entire Windows 7 on the 63 GB partition. The rest of the partitions remain as an NTFS Windows partition and I can still access them both (the 173 and 84 GB partitions).  Now I want to change the two partitions of Windows into an Ubuntu format partitions plus most importantly, I want to extend the 63 GB partition to more than a 100 GB because at the moment I am running out of disk space. Whenever I try to install any application, especially using wine, it always complains for a shortage of disk space.  How do I do the extending activity before I entirely format my laptop again and lose all the important files on my partitions?


I would like to generate author citations in my text, and I have been following the information in . I've got my includes \usepackage[numbers,                         sort&compress                         ]{natbib}       % Sort numerical keys for multiple cites  \section{Example Chapter}  ~\citeauthor{born_population_2003} ~\cite{born_population_2003}  I've got my bib file (with standard citations being referenced correctly) @article{born_population_2003,         title = {Population substructure of North Atlantic minke whales (Balaenoptera acutorostrata) inferred from regional variation of elemental and stable isotopic signatures in tissues},         volume = {43},         issn = {09247963},         url = {http://linkinghub.elsevier.com/retrieve/pii/S092479630300085X},         doi = {10.1016/S0924-7963(03)00085-X},         number = {1-2},         urldate = {2013-08-28},         journal = {Journal of Marine Systems},         author = {Born, {E.W.} and Outridge, P. and Riget, {F.F.} and Hobson, {K.A.} and Dietz, R. and Øien, N. and Haug, T.},         month = sep,         year = {2003},         pages = {1--17},         file = {born2003_1-s2.0-S092479630300085X-main.pdf:/home/ryan/.mozilla/firefox/hauwprbq.default/zotero/storage/PMNU4J6G/born2003_1-s2.0-S092479630300085X-main.pdf:application/pdf}         }  But I'm not sure how I should check the compilation part. I'm using a template provided by my university, which is using a Makefile, which uses latexmk to compile the document default:         #latexmk -jobname=$(builddir) -pdfdvi thesis.tex         latexmk -pdfdvi thesis.tex  The output I'm getting looks like this  Is this some issue with latexmk?

I have taken a look through many other questions on this subject but cannot seem to fix my issue. Essentially while references display correctly I cannot get the author citation to appear in my text despite running pdflatex followed by bibtex followed by two more runs of pdflatex. Any help would be appreciated.  Sample tex file:  \documentclass{article} \usepackage{natbib}  \begin{document}  Blahblahblah \citet*{Test12}.  \bibliographystyle{plain} \bibliography{refs}  \end{document}   refs.bib:  @article{Test12, author = "John Smith", title = "Test Article", year = "2012", journal = "The Test Journal" }   Output:


Which one do I pick here? Are both acceptable? I think asking is a present participle and no gerund.

Some verbs are followed by ing, e.g. I enjoy swimming. We can't say I enjoy to swim. Likewise, some verbs are followed by to, e.g. I decided to make a plan.   Which particular verbs are followed by ing and to? Can you please provide a list for that?  Moreover, which verbs can be followed by both without having the meaning changed?


My MacBook Pro Specs:    macOS Mojave 10.14.4 Beta (18E194d) Processor 2.7 GHz Intel Core i7 Memory 16 GB 1600 MHz DDR3 Graphics Intel HD Graphics 4000 1536 MB   When using Autocad, Excel, or Adobe (apps), my laptop slows down tremendously.   Is there any way to speed it up/find out what is slowing it down?

I bought a Mac (13", early 2011) almost 5 years ago. When I first got it, it was running under OS X 10.7 and it was pretty fast. I've being upgrading it ever since and it's now running under Mac OS X 10.11.  I guess it didn't totally survive the upgrades because, today, there's a lot of bugs, freezes, lags, "spinning beach ball" appearing,... for example, when I write something on a normal program/editor, the cursor freezes for a few seconds, then catches up to what I'm writting.  As you can guess, that's really annoying! I've been thinkning about upgrading the hardware but I don't know what to do: should I change the RAM to 8 GB - 1 333 MHz (currently my computer has 4 GB - 1 333 MHz)? Or should I upgrade to an SSD (which is pretty expensive and difficult to install)?  Thank you very much.


I can't understand a simple thing. example: A is an interface, B is a class that implement correctly A. What dose exactly mean doing:  A name = new B(some_argument);    I see lot of people using this instead of  B name = new B(some_argument);    But I can't figure out what dose that mean making an object with an interface. And WHY they do this? There are some differences between them? Sometimes one is better than other? for example the opposite dose not work  B name = new A();

I have seen this mentioned a few times and I am not clear on what it means. When and why would you do this?   I know what interfaces do, but the fact I am not clear on this makes me think I am missing out on using them correctly.   Is it just so if you were to do:  IInterface classRef = new ObjectWhatever()   You could use any class that implements IInterface? When would you need to do that? The only thing I can think of is if you have a method and you are unsure of what object will be passed except for it implementing IInterface. I cannot think how often you would need to do that.   Also, how could you write a method that takes in an object that implements an interface? Is that possible?


I have an image (example.png) divided in n times m blocks, and consider this class:  .myFullImg{    background: url(example.png); }   I want to create a div in which i show in his background just a specific block:

   I don't know what to put in style above ?  Example: the image image.png had: height:150px and width:100px.  Then i have 6x4=24 blocks in this image with height:25px and width:25px  And i want in a div to display a block from the image image.png  Thank you for your help

Let's say I want a way to display just the the center 50x50px of an image that's 250x250px in HTML. How can I do that. Also, is there a way to do this for css:url() references?  I'm aware of clip in CSS, but that seems to only work when used with absolute positioning.


Is arrays passed by reference to methods in java? If so, why the following code prints 1,2,3,4,5 instead of 5,4,3,2,1 ?  public class Test {    public static void main(String[] args) {       int[] oldList = {1, 2, 3, 4, 5};       reverse(oldList);       for (int i = 0; i < oldList.length; i++) {           System.out.print(oldList[i] + " ");       }    }     public static void reverse(int[] list) {       int[] newList = new int[list.length];       for (int i = 0; i < list.length; i++) {           newList[i] = list[list.length - 1 - i];       }       list = newList;    } }

I always thought Java uses pass-by-reference. However, I've seen a couple of blog posts (for example, ) that claim that it isn't (the blog post says that Java uses pass-by-value). I don't think I understand the distinction they're making. What is the explanation?


I have Ubuntu 14.04 and I never made any disk partitions.I'm trying to ask that if a install a certain game or program from Ubuntu Software Center, where exactly does it go? I have this game that I downloaded from the Software center but now that I need to apply mods, I really don't know where the game is stored. I even tried searching for it but only the launcher that was used to install the game appears in the search results.

For some applications its fairly easy enough to locate where the application was installed to using the "which" command.  However, some applications such as Tomcat are a little out of my league to locate.  I'm asking for particular methodology that can be applied to any apt-get install  to locate where the binary, library, and support files are installed to.  The cause of this question is that I installed Tomcat7 and I can's seem to locate it and I have a list of customizations to perform.


I sent both of the reviewers, pdf of my thesis more than a month ago. Only one of them acknowledges the receipt, the other one is french. I sent them physical copies last Friday. They should have received them by now. I sent them an email just in case to warn them I sent it to their University address. Why don't they just acknowledge they received it? I need to contact them again because I misprinted one graph.

As a grad student, I just find it tremendously frustrating when emails are ignored by faculty (both at my institution and at other places). Is this acceptable? I'd be content with a simple response with one line along the lines of "I have read this email and am busy right now, will respond in X days when I can write a more detailed email." I understand that, as a first year student in my field, I'm not really in a position to request anything of anyone, but it just seems like common decency.  Instead, I never hear back, as if my email has been jettisoned off into oblivion.


In the case where you've specified the following list of numbers, which are in random order, will the results be in the same order?   where item in (     371355,     371476,     371629,     370556,     370677,     370820,     370952,     371070,     371223,     372154,     372253,     371751,     371872 )

We need to add a priority column to a table that gets hit about 250 times a second, approx 170 selects, 125 inserts and 60 updates. The column will be a simple number(1).  The priority does not matter for the inserts or updates i.e. not part of the primary key, which I'll enforce separately.  We basically don't want to have to do an order by over a range scan 170 times a second, as the number executed will drop massively.  Does an index organised table guarantee that priority = 1 will always come before priority = 9 when running the following query:  select *   from my_table  where rownum < 2   For slightly more context a typical query would be:  select *   from my_table  where mod(to_number(to_char(tstamp,'ss')),1) = 0    and done is null    and country = 'gbr'    and rownum < 2   The pk constraint, for the IOT, would become priority, rest of the pk with a separate constraint on the pk solely for structure. done is null in approximately 99% of the table so this isn't very selective anyway.  Main index used is, I think, country, done, to_number(to_char(tstamp,'ss'), we tested about 20 combinations and this came up top by a long way.  I am completely unwilling to add any time at all to these queries, 0.01s a day added by select is 41 minutes a day. We'd much rather settle for "good enough" than perfection.


Divisibility rules of 1,2,3,4,5,6,8,9 are first or second grade math. Are there any divisibility rules for numbers with factors including 7. I noticed that the digits of 7x starting with x=1 to x=5 have digits that add up to 7, 5, 3, 10, and 8.

What is the fastest known way for testing divisibility by 7? Of course I can write the decimal expansion of a number and calculate it modulo 7, but that doesn't give a nice pattern to memorize because 3 is a primitive root. I'm looking for alternative ways that can help you decide when a number is divisible by 7 by hand.  I'm sorry if this is a duplicate question, but I didn't find anything similar on the site.


Why inside myheader.h, we write:  #ifndef MYHEADER_H #define MYHEADER_H ... #endif   Since, Identifiers are case-sensitive (lowercase and uppercase letters are distinct), and every character is significant. How the above is valid? It should be   #ifndef myheader.h #define myheader.h ... #endif   What is the purpose of the underscores? What if I have 2 separate header files with names: MyHeader.h and myheader.h, How does the preprocessor distinguish between these?

It's common in C++ to name member variables with some kind of prefix to denote the fact that they're member variables, rather than local variables or parameters. If you've come from an MFC background, you'll probably use m_foo. I've also seen myFoo occasionally.  C# (or possibly just .NET) seems to recommend using just an underscore, as in _foo. Is this allowed by the C++ standard?


Let $A\in \mathbb{C}^{n\times n}$ satisfy $$A^{2}+A+I=0 $$ Can A be singular?  So I have: $$ (A-I)(A^{2}+A+I)=0\\ A^{3} = I \\ (\det A^{3}) = \det(I) \\ (\det A)^{3} = 1\\ \det A\neq 0 $$ So $A$ is not singular.  Is this correct the way I've done this?

$A^2 + A + I= 0$   Can $A$ be singular? Justify your answer.  I do not know where to start.


Now i need to re-apply! what are the steps that i can take to make my application and all documents strong and not get rejeceted.   As per i have my graduation ceremony and i definitaly want to attend it.

Many of the UK visa refusals we see here share a common pattern and the prevailing reasons refer to V 4.2 (a) and (c).    I do understand that, while the applicants may describe very different individual circumstances, there's a consistent pattern and, broadly, fall into specific categories:    Credibility (lifestyle, lack of ties, visit history, lies & omissions) Funding (insufficient funds, provenance of funds, funds parking) Sponsorship (family, friends, employer)   Question: What most commonly triggers a UK visa refusal where V 4.2 (a) and (c) are given as the grounds?  Secondarily: Given that there is a clear pattern, to what extent are these refusals predictable? Does sponsorship make a difference? Is there a set of personal circumstances, however abstract, where a refusal is all but guaranteed? For example, why do those we see here on TSE who sought entry for the PLAB or British Army appear to be refused with a common theme? Is there a uniform shortcoming or is it just discrimination?   PLAB: What is about applications for a visa, for the purpose of sitting the Professional and Linguistic Assessments Board (PLAB) exam, that seem to invite refusals. After all, the test is given so that international medical graduates can show that they qualify to practise medicine in the UK. The first part, PLAB 1, can be taken in centres outside of the UK. However, PLAB 2 can be taken only in the UK. Why can't you can't get a visa just to sit the exam, promising that you'll leave immediately after?    British Army: Since Commonwealth citizens are eligible to apply online to join, even those who don't reside in the UK, why is it so difficult to get a visa just to attend an interview to see whether you are suitable? Even with an invitation from the Army, such visa applications seem to be unsuccessful. Isn't a career in the British Army a valid reason?     Lastly:  After such a refusal, what approaches would increase the chance of a successful application?


I am trying to send mail from my centos using postfix configuration but getting error as   554 5.7.1 <dummy@gmail.com>: Relay access denied   my postconf -n shows belog information  alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = localhost inet_protocols = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = dummy.com myhostname = dummy.com mynetworks = all mynetworks_style = host myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550   What configuration I have to perform to send mails from my server.

I have problem in send mail from postfix in centos  I have following  for sending mail but I am getting error.  As in the link I tried following commands  telnet localhost smtp  Trying ::1... Connected to localhost. Escape character is '^]'. 220 mydomain.com ESMTP Postfix ehlo localhost 250-mydomain.com 250-PIPELINING 250-SIZE 10240000 250-VRFY 250-ETRN 250-ENHANCEDSTATUSCODES 250-8BITMIME 250 DSN mail from:<domain.com> 250 2.1.0 Ok rcpt to:<test@gmail.com> 554 5.7.1 <test@gmail.com>: Relay access denied   Edit-1  In terminal this works  echo TEST | mail -v -s "Test mail" testing@gmail.com   my postconf -n shows belog information  alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases command_directory = /usr/sbin config_directory = /etc/postfix daemon_directory = /usr/libexec/postfix data_directory = /var/lib/postfix debug_peer_level = 2 home_mailbox = Maildir/ html_directory = no inet_interfaces = localhost inet_protocols = all mail_owner = postfix mailq_path = /usr/bin/mailq.postfix manpage_directory = /usr/share/man mydestination = $myhostname, localhost.$mydomain, localhost, $mydomain mydomain = dummy.com myhostname = dummy.com mynetworks = all mynetworks_style = host myorigin = $mydomain newaliases_path = /usr/bin/newaliases.postfix queue_directory = /var/spool/postfix readme_directory = /usr/share/doc/postfix-2.6.6/README_FILES sample_directory = /usr/share/doc/postfix-2.6.6/samples sendmail_path = /usr/sbin/sendmail.postfix setgid_group = postdrop unknown_local_recipient_reject_code = 550   What configuration I have to perform to send mails from my server.


I'm about to publish a paper with my previous group.   I'm not in a permanent position, and my boss doesn't care if I mention or if I don't mention my current institution in the paper.  For me, a researcher who wishes to have a permanent faculty position, would it be helpful or not at all to do that?

I am moving from one job to another (postdoc to tenure track) this summer and I have papers in several stages of being written, these go from handwritten notes with all the necessary arguments to under revision at a journal. All the papers will have my new contact information put on them but where is the line for changing affiliation? It seems obvious to me that the one that is still in the handwritten notes stage will get the new affiliation and that the ones under revision won't. So somewhere in between is a line.   Where is it?  There are some similar questions so far (see  and  but they do not seem to be quite the same situation since I am not changing fields and the appointments are not concurrent.


I have 100% ad hoc sql through out my application. A buddy of mine recommended that I convert to stored procedures for the extra performance and security. This brought up a question in my mind, besides speed and security is there any other reason to stick with ad hoc sql queries?

What are the advantages/disadvantages of keeping SQL in your C# source code or in Stored Procs? I've been discussing this with a friend on an open source project that we're working on (C# ASP.NET Forum). At the moment, most of the database access is done by building the SQL inline in C# and calling to the SQL Server DB. So I'm trying to establish which, for this particular project, would be best.  So far I have:  Advantages for in Code:   Easier to maintain - don't need to run a SQL script to update queries Easier to port to another DB - no procs to port   Advantages for Stored Procs:   Performance Security


I want to teleport a player randomly in a 10,000 block radius when they step on a pressure plate. How do I do this?

I was wondering if it is possible for you to make a command block spawn hostile mobs in random places in a specified area?   I need the mobs spawned on different Y coordinates too because you need to fight your way up a tower to the top and I want the mobs to vary on each level to have specialty to each floor every time you play the mini game.


I am living in India. I have an online business with many clients in the US, and I want to register it as an LLC in the US.   Which state is the best to register in?  What is the process for me to register my company in the US?

I have just started to work on an online business mode website. My dream is to make it live and bring revenue from the website. However, the project is in Incubator phase.   In this situation, can i register it as a Business, Open a Business Bank Account and start making the Purchases such as Servers, Software's etc.  Whether i have to pay Tax for my start up business ?  Location : New Jersey, US


This question appeared in one of the national exams in Saudi Arabia which was on Saturday, November $29, 1997$.  If today is Saturday, what day of the week will it be $((1997!+11)!+29)!$ days from now?  Actually I do not know how to start. I saw a similar problem asking $10^{{10}^{10}}$ days from now, it was a simple one.  Any help would be appreciated. THANKS!

I'm trying to prove by induction the following statement without success: $$\forall n \ge 2, \;\forall d \ge 2 : d \mid n(n+1)(n+2)...(n+d-1) $$  For the base case: $n = 2$, $d = 2$ $2\mid 2(2+1)$ which is true.  Now, the confusion begins! I assume I would need to use the second induction principle to proof this because $P(n)$ and $P(n+1)$ are not related at all. It is also the first time I am dealing with more than one variable so it makes it harder for me.  I tried the following: - Trying to prove by simple induction. I did not go very far. - Trying to split my induction step in 2 parts: If $d\mid n$, I'm done.   If $d$ does not divide $n$, then I would need to do a second proof and this is where I'm blocked.  Anyone could tell me what's wrong in the approach I take to solve this problem?  Any help would be appreciated!


Is it possible to name a pic just like I can name a node in tikz?  I have tried  \pic (A) {man}; \pic [right=of A] (B) {man};   but it gives me the warning Package pgf Error: No shape named A is known.

I'm confused about tikz pics. I can freely define them without issue, and even add coordinates inside that will be available by name inheritance like (-A) as for example in \pic (S) at (0,0) {myPic}; \draw (S-A) -- ++(0,0);. This is all documented around p. 255 of the pgf manual.  However I don' understand why it is not possible to give a name to a pic like the one above if no coordinate is defined inside it. By default it would be great if it could behave like a normal node.  MWE:  \documentclass{minimal} \usepackage{tikz}  \tikzset{     myBlock/.pic = {         \node[draw,minimum width=1cm,minimum height=0.5cm] at (0,0) {};     },     myBlockNamed/.pic = {         \node[draw,minimum height=1cm,minimum width=0.5cm] (-m) at (0,0) {};     }, }  \begin{document} \begin{tikzpicture}     \pic () at (0,0) {myBock}; % can't give it a name     \pic (S) at (3,0) {myBlockNamed}; % can give it a name     \draw (S-A) -- ++(2,0); \end{tikzpicture} \end{document}   The underlying point is I'm working on a control blocs library (so that we can stop the chat below with @Alenanno). For example here is the definition of a math operator  \tikzset{     mySum background/.style = {         circle, minimum size=1.5em, fill=white,     },     mySum edge/.style = {         draw=black, circle, minimum size=1.5em, line width=.5pt,     },     pics/bOp/.style = {     code = {       \node [mySum background] {};       \foreach \t [count=\i] in {#1}{         \pgfmathsetmacro{\angle}{\i*90}         \node[anchor=center, font=\tiny] at (\angle:0.45em) {$\t$};       }       \node [mySum edge] {};     },   }, }


I still cannot fully comprehend the essence of a critical point on phase diagrams.   It is usually said in textbooks that the difference between liquid and gaseous state of a substance is quantitative rather than qualitative. While it is easy to understand for a liquid-solid transition (symmetry breaking is a qualitative change), it is unclear to me what meaning does it have for a liquid and its gas: there is always a quantitative difference between a gas at 300 $K$ and at 400 $K$.   Is it correct to say just "this substance is in gaseous state"? Shouldn't we also specify the path on the phase diagram by which the substance got in its current state? Did it cross the boiling curve or went over the critical point and never boiled? Why does a critical point even exist? Blindly, I would assume that either there is no boiling curve at all - since the difference is quantitative, the density of a substance smoothly decreases with temperatures and increases with pressure; or that the boiling curve goes on to "infinity" (to as high pressures and temperatures as would remain molecules intact). Why does it stop?

We know that $T_c$ is the temperature above which no amount of pressure could force a gas to liquefy. But why is this? Somehow I don't buy the point that the gas molecules exert too much pressure back to get close and turn into a liquid. If we had tens of thousands of atmosphere pressure (such as on the inside of hot planets), we should be able to liquefy any gas at any temperature.


I just installed windows 7. Intel recomends to install the Inf utility after you install the operating system and before you install everything else.  There is no version for windows 7 yet.  I sometimes installed but sometimes had my machine without it after a fresh install, are they really needed or all the needed drivers come with windows by default?

I've just installed Windows 7 on my PC.  I went online to look for drivers. For , Foxconn offers LAN drivers, on-board audio drivers, and chipset drivers. And for , Nvidia offers a graphics card driver, obviously.  But then I stopped and wondered... what benefit would I gain from installing them?   The LAN cable is plugged in and I'm online; no problems there.  The on-board audio is working fine.  A quick Google tells me that a chipset is responsible for moving data around my motherboard – which seems to be happening OK!  And my graphics look perfect.    So why should I install the drivers? What would they give me, other than badly designed "management" interfaces, and pointless "notifications" whenever I plug in an audio jack?  If there are different considerations for each of the components – chipset, audio, LAN, and graphics (and any others you think I should be aware of) – please break it down in your answer.     Update: I've had a couple of answers already, saying that I'll get better stability, bugfixes, etc.   Can I slightly expand my question... Can I get all these same benefits if I install the drivers via Windows Update? And if I do this, would I avoid having to install the vendor-specific UIs, which I find so annoying?


I visited a lot of forums but found no answer. I have 5 files in my trash bin and I can't delete them, at first after I clicked on the empty trash button it would freeze, now when I do that it just says "preparing" and displays an error while trying to delete files.  I tried deleting it via BleachBit but nothing, tried with terminal command sudo rm -Rf ~/.Trash/* it doesn't work either. I found out that one of my folders is immutable, I tried to disable that via terminal it didn't work, I can't even restore it, it freezes again.  I've been using Ubuntu 13.10 for few weeks and I am new to Linux. How can I solve this?

I am not able to find trash anywhere. Can you please tell me a command or anything like that to empty the trash using terminal ?


During 90s, the muggle population was over 5 billion. But, wizard population wasn't even 500k i.e. 0.01%:  That's hell of a monstrous difference.  If we look at wizards, they have better odds of survival. Forget about past, they have better medicines etc even than modern muggle world. They could also dominate other species easily. They could better survive in adverse situations than their muggle counterparts.  Also, we didn't see any kind of impotence disease (even probability of squib birth was very low) or population control campaign (which didn't have any point anyway) in wizarding world. Weasleys had dozens of kids, for example.  Then, why is wizard population much less than muggle population?

One of the basic premises of the Potterverse is that Muggles are much, much more common than wizards. This is what in part necessitates the need for the Wizarding world to hide itself away because, despite their superior powers, they would be overwhelmed by the far more massive Muggle population should conflict break out.  However, we also know that wizards and witches have been around a long time. In Prisoner of Azkaban, Hermione's letter mentions:      I bet he’s learning loads, I’m really jealous – the ancient Egyptian wizards were fascinating.   Given that in one of Ron's letters, the Pyramids were mentioned as magical locations, this means that while we don't have a definitive date of when wizardry entered the world, we can definitively say that wizards and witches have been around since at least  Most likely they have been around much longer than that.  I could not find any evidence that suggests that magical people reproduce any faster or slower than a Muggle. Furthermore, being born to magical parents almost always means the child will also be magical (Squibs are considered very rare). While I don't have statistical evidence, it seems that merely having only one magical parent is enough to make it likely that the child will have magical abilities - based on Severus Snape, Seamus Finnigan, and of course, Tom Marvolo Riddle. Finally, there are of course Muggle-Borns, which while they are certainly very rare as a percentage of the Muggle population, they seem quite common enough at Hogwarts.   Finally, it's fairly easy to make the argument that Wizards are more powerful than Muggles in ancient times, given the lack of Muggle technology. In the modern era, there are  that Muggle weapons have exceeded Wizarding power, though there is not total consensus on this. It would be hard to argue, however, that Muggles had superior power (via technology) than Wizards prior to the 20th century.   In summary:   Magical people have been around for at least 4500 years, probably longer. Magical people reproduce at roughly the same rate as Muggles. For most of history, magical people have had superior power to Muggles.   The question:  Given these reasons, why is is it that the Wizarding population does not dominate the human population via ?  In-universe answer only, please. I'm not looking for a "J.K. Rowling is bad at maths" kind of answer.


This is something I did a lot in Zbrush; make a black & white image containing height map data from a viewport snapshot.  Since I don't own Zbrush, I'd like to do this in Blender if possible. Is there a way?   I'm a big fan of Blender's sculpting tools (and Substance Painter), and this would benefit me greatly.

I wonder how to render an alpha image to use for sculpting mode. This alpha image is called Height Map images.


If we assume that the substance of time is slower in the presence of very high gravity( early years of the universe) then is it not reasonable to assume that as matter gets further apart, that time, due to less gravitational effect will speed up creating the illusion that the velocity of matter is accelerating.

At the time the Big Bang happened the matter had enormous density. According the GR (I may be wrong here) such density dilates time.  If so, could it be that the time periods just after Big Bang which are usually considered happening in small part of a second (such as the Planck epoch), in reaity took billons of year (or may be, infinity) but due to time dilation appear to us as spanning only microscopic parts of a second? Could it be that the age of the universe is dramatically underestimated?


I have applied for a UK Standard Visitor visa with my mother and have been refused. I want to reapply soon.  What changes should I make?

The UK Visas and Immigration Directorate publishes  that provides helpful tips that can result in successful visa applications. Section 2 of this guidance opens is entitled "other documents you may want to provide" (emphasis mine).  Section 2: other documents you may want to provide – all visitors This section provides guidance on the types of documents that you may want to provide to help us consider your application against the Immigration Rules. Previous travel documents/passports, which show previous travel. Financial documents showing that you have sufficient funds available.  These must clearly show that you have access to the funds, such as:  bank statements building society book proof of earnings such as a letter from employer confirming employment details (start date of employment, salary, role, company contact details) where a third party (who is either in the UK or will be legally in the UK at the time of your visit) is providing financial support to you e.g. a business, a friend or a relative, documents to show that they have sufficient resources to support you in addition to themselves and any dependant family should be provided   The first item is "bank statements" and this ties in with the , which says...  evidence that you can support yourself during your trip, eg bank statements or payslips from the last 6 months  (Note 'eg' is a Latin abbreviation meaning "for example"; this appears to be optional rather than a fixed requirement.) Question: How should someone interpret this such that the chances of success are maximized? How many statements should I submit? What are they looking for and what do my bank statements tell about me?


I am currently on Ubuntu 20.04.1 LTS and I want to install windows 10 without removing my ubuntu. I want to install win10 on my real PC not virtualbox. How can I do it? Will win10 cause problem with grub boot loader?

I have Ubuntu on my laptop. Now I want install Windows 7 in a dual-boot. How can I do this? I can't lose my Ubuntu files, and I'm afraid that I might break . Go  for UEFI only!


What happens to a person (both their consciousness in the Matrix, and their body) once they are take over by an Agent program and then the Agent leaves, if nothing traumatic happened to the Agent while "wearing" them?   The only examples I remember canonically can not shed any light on this since the person was damaged/killed while being taken over (helicopter pilot and truck driver in The Matrix).  I'm only looking for canonical examples.

I've been rewatching parts of The Matrix because of the questions I've been asking.  Maybe this is in a scene I haven't re-watched, but I don't remember it being covered in the movies.  If an Agent takes over a person's avatar in the Matrix, what happens to that person?  When the agent leaves, do they return to their normal routine?  Are they given manufactured memories?  Or is there too much to patch up so the Matrix has to make the person into a murder victim?  And if the Agent is killed (which wasn't considered to be a problem until Neo came along), is the person who was replaced also killed?


so I tried to take pictures of a house and the night sky, but everything came out very blurry no matter what I used  I shot at 30 sec exposure, F 3.5, ISO 3200 on a tripod using remote

I was shooting the lighting of the city that is visible at the top of the trees if you shoot landscape.  No matter what I do, the image is blurry. What have i done:   ISO 100 Manual focus towards infinity Using a tripod Using really sharp prime & good camera   Basically, everything I could. The only example i have is here, but it is not good, because image is underexposed:    The main question: Why can't night photographs be as sharp as daily photographs (with approperiate exposure times of course)?


I am doing a Masters thesis. Can I use a quote to begin each chapter of my Master's thesis?

I am wondering if there is a general consensus as to the suitability of epigraphs in a thesis, either a single one at the start of the document, or an appropriate quote to begin every chapter.  For example, at the start of a technical chapter describing some code, I could write     Beware of bugs in the above code; I have only proved it correct, not tried it. - Donald E. Knuth   I am lucky to have complete freedom over how I choose to typeset my thesis (Master's thesis in astronomy) and I like the idea of a thematic quote to begin a chapter. However, I am wary of seeming unprofessional or tacky so I am curious to get some more thoughts on the matter.


I am a vlogger and after getting HTC Desire HD, found out its camera was all I ever needed. However, I usually have to see myself while recording video, to control my facial expressions, and with a rear-facing camera it's just not possible.  I know ADB allows for screenshots, but is there a way to stream the screen output to my PC's display?  Not necessarily at 20+ fps, just a couple frames per second will do.

How can I project my Droid Incredible screen so I can demonstrate the smart phone to a room full of people?  Does anyone know how I can link the phone to a PC? To a TV?


There are simple and great web site download tools that allow to create a local mirror of simple sites having no JavaScript infrastructure behind. However, sometimes there cases when a site looks simple (and even is old enough to be a real "web 1.0" site), but none of such download tools are able to make a mirror of it. I've tried to make a local mirror for  (for example, it has some transcriptions that cannot be found elsewhere, and some more rare stuff) using HTTrack Site Copier, Free Download Manager, and wget. All of them made simple mirrors lacking a lot of content. I saw some scripts at those pages, and probably that prevents from mirroring.  How can I mirror a web site with simple JS enabled? Perhaps, there's a web browser-driven solution that could support JS out of box (any browser extension, etc)?  Thanks in advance.

Pretend I wanted a simple page copy to be downloaded to my HD for permanent keeping. I'm not looking for a deep recursive get, just a single page, but also any resources loaded by that page to be also downloaded.  Example:   Expect:   The index.html Any loaded images Any loaded JS files Any loaded CSS files Any images loaded in the CSS file links for the page resources localized to work with the downloaded copies (no web dependency)   I'm interested to know if you can help me find the best wget syntax or other tool that will do this. The tools I have tried usually fail to get the images loaded by CSS, so the page never looks right when loaded locally. Thank you!  Tangent Solution  I found a way to do this using FireFox. The default save is broken and there is an addon that is called "Save Complete" which apparently can do a good job with this. However, you can't download it because it says it is not supported in current FireFox version. The reason is that it was rolled into this addon: "Mozilla Archive Format". Install that, then when you use File > "Save Page As.." there is a new option called "Web Page, complete" which is essentially the old addon, which fixes the stock implementation FireFox uses (which is terrible). This isn't a WGET solution but it does provide a workable solution.  EDIT: Another ridiculous issue for anyone who might be following this question in future, trying to do this. Do get the addon to work properly you need to Tools > Mozilla Archive Format and change the (terrible) default setting of "take a faithful snapshot of the page" to "preserve scripts and source using Save Complete", otherwise the addon will empty all your script files and replace them with the text "/* Script removed by snapshot save */".


How to show effectively that every finite group is isomorphic to a subgroup of symmetric group

This is from Fraleigh's First Course in Abstract Algebra (page 82, Theorem 8.16) and I keep having hard time understanding its proof. I understand only until they mention the map $\lambda_x (g) = xg$. Can someone explain this proof step by step? Thank you so much! Here is the proof:  Let $G$ be a group. We show that $G$ is isomorphic to a subgroup of $S_G$. Define a one-to-one function $\phi: G \to S_G$ such that $\phi(xy)=\phi(x) \phi(y)$ for all $x,y \in G$. For $x \in G$, let $\lambda_x: G \to G$ be defined by $\lambda_x (g) = xg$ for all $g \in G$. The equation $\lambda_x (x^{-1} c) = x(x^{-1} c) = c$ for all $c \in G$ shows that $\lambda_x$ maps $G$ onto $G$. If $\lambda_x (a) = \lambda_x (b)$, then $xa=xb$ so $a=b$ by cancellation. Thus $\lambda_x$ is also one to one, and is a permutation of $G$. We now define $\phi: G \to S_G$ by defining $\phi(x) = \lambda_x$ for all $x \in G$. To show that $\phi$ is one to one, suppose that $\phi(x) = \phi(y)$. Then $\lambda_x = \lambda_y$ as functions mapping $G$ into $G$. In particular $\lambda_x (e) = \lambda_y (e)$, so $xe=ye$ and $x=y$. Thus $\phi$ is one to one. It only remains to show that $\phi(xy) = \phi(x) \phi(y)$, that is, that $\phi_{xy} = \lambda_x \lambda_y$. Now for any $g \in G$, we have $\lambda_{xy} (g) = (xy)g$. Permutation multiplication is function composition, so $(\lambda_x \lambda_y)(g) = \lambda_x (\lambda_y (g)) = \lambda_x (yg) = x(yg)$. Thus by associativity, $\lambda_{xy} = \lambda_x \lambda_y$.


How can I get a line of text spread across the entire line width? As shown; with letter spacing increased (not only word spacing).   from:    to:    Lastly, how could I set a line-to-line spacing that would most approximate to that shown in the previous illustrations?  PS. Here's the code for the first image output:  % methamatics \documentclass{article} \usepackage{unicode-math} \usepackage{fontspec,xltxtra} \usepackage{lipsum}  \emergencystretch 3em % ------------------- \tolerance=1 \emergencystretch=\maxdimen \hyphenpenalty=1000 \hbadness=1000 % ------------------- \renewcommand{\normalsize}{\fontsize{12}{7}\selectfont} \setmathfont[]{STIX Two Math} \setmainfont[Ligatures = {Historic}, Contextuals = Alternate, Kerning = On]{Hoefler Text Pro}  % \setmathrm % [ %   Style = Historic, %   Ligatures = Historic, % ] % {Hoefler Text Pro}  % \setmathsf % [ %   Style = Historic, %   Ligatures = Historic, % ] % {Hoefler Text Pro}  % \setboldmathrm % [ %   Style = Historic, %   Ligatures = Historic, % ] % {Hoefler Text Pro Bold}  %-CMDS \newcommand{\tib}[1]{{\fontspec     [         Contextuals = LineFinal,         Kerning = On,     ]     {Hoefler Text Pro Engraved One}     \fontsize{24}{12}     \selectfont #1 \normalfont \normalsize}}  \newcommand{\tisc}[1]{{\fontspec     [         Letters = SmallCaps,         Kerning = On,     ]     {Hoefler Text Pro}     \fontsize{20}{12}     \selectfont #1 \normalfont \normalsize}}  %-DCMNT \begin{document}     \begin{center}         \tib{VECTOR ANALYSIS}\\[\baselineskip]         \tisc{an introduction\\         to \\         vector methods} \\          $$  $$     \end{center} \end{document}

Is there a "sentence stretch" that acts horizontally in a similar way as \setstretch acts vertically?


Does anyone know what the current status of this  is? I am very eager to try it out, but there does not seem to be any available download, nor information on which handsets/hardware to use.

I recently found out about Ubuntu for Android Multi-Core Smartphones and was digging around on the Ubuntu website as well as the Canonical website but have yet to find any information on if it available to the public yet ?  I am very interested to try it our on my Android and if it is available for the public am wondering where and how I can get a copy of "Ubuntu for Android" ?  If it is not available then perhaps someone can shed some lite on what sort of timeframe it will be until it is available to the general public?


In the following code, I want to center horizontally the text area (main body+margin area), but the centering option of the geometry package doesn't have any affects. Is there a way to do this?  \documentclass[a4paper,symmetric,showframe,centering]{tufte-book} \usepackage{lipsum} \begin{document}  \lipsum[1-2] \end{document}     I know that something like \PassOptionsToPackage{right=8.2cm}{geometry} can do the job, but I think it should be there a logical way.

I'm trying to typeset my thesis with the tufte-book document class, and I'm having an issue with the margins. There is a rule (beyond my control) that all my text and figures must remain within margins that are at least 1 inch wide. I quite like the style of putting figures and notes in the margin (that's why I'm using the tufte-book class), but when I place things in the large margin on the right, they are liable to end up less than one inch from the edge of the page. Is there a way to force a minimum "real margin" that even margin notes and figures won't intrude on?


For a given stock, if:   a seller places a sell limit order at 100 dollars; a buyer places a buy limit order at 200 dollars;   At what price will the transaction be executed and who will pay/get how much?

Say a security has been trading at under $20.10, and there are limit orders selling at $20.10 and $20.21. Then Simon issues a limit order to buy at $20.21. According to , Simon would end up buying shares at $20.10.  Why does the exchange favor the buyer here?  I.e., why does the transaction execute at the seller's limit of $20.10 instead of the buyer's limit of $20.21?  (I.e., why don't Inara/River get to sell at $20.21 / above their limit, but Simon gets to buy at $20.10 / below his limit?)  Is the example flawed?  If it makes a difference, I'm mainly curious about NASDAQ and NYSE.  I tried Googling for specs (e.g. ), but couldn't find anything.  Only found that some  implementation executes the average of the buy/ask.  Just curious how the system works.


I am working with the OpenLayers plugin. I need to project the satellite data with respect to vector data shapefile I have.  For that Andre Joost suggested to create vector grid with vector data reference system. The new problem is when I change the coordinate system to degree minutes seconds the coordinate system does not changes and it shows only the coordinates in meters itself.   What is the mistake I have made?

I have a project and a topomap in WGS84 (EPSG4326). On the fly CRS transformation is activated. I open Google satellite layer from the OpenLayers plugin. The Google layer is WGS84 / Pseudo Mercator (EPSG3857). But then the whole project has also become WGS84 / Pseudo Mercator (EPSG3857).  I thought on the fly transformation would reproject to EPSG4326. Why is that? Is it better to work directly in WGS84 / Pseudo Mercator (EPSG3857) systematically when we use Google Earth?


Is there an English (if not English, do any other languages have words for this?) word for the brother of a daughter-in-law? For example, in the following diagram, what would Jim be to Lily?

Here at the Genealogy and Family History Stack Exchange we see many questions about relationship mapping which is also known as:   relationship calculation kinship terminology etc   If you are just trying to understand how to calculate "cousins and removes" then  provides an excellent guide.  However, if you are seeking an English term for a more complicated relationship between two members of an extended family, rather than asking a question like:          site users are encouraged to first review the answers below.    Note: This Q&A arises from  and is set to  to help make it canonical.


My background is computer science. I am fairly new to monte carlo sampling methods and, although I understand the math, I have hard time coming up with intuitive examples for importance sampling. More precisely, could someone provide examples of:   an original distribution one cannot sample from but one can estimate an importance distribution which can be sampled from and adequate for this original distribution.   Thanks in advance!


I'm mounting an SMB share with an ext3 formatted drive from my home router.  Wanting to backup some information from my linux box to the share. Is SMB/CIFS shared. Having issues with the fact that TEST==test in the eyes of the SMB so it is failing the backup.  Wondering how I can make TEST!=test in the eyes of the share to oget things running  OK.   I have added   case sensitive = yes    to the globals section of my smb.conf file and  when I   touch test.txt   it creates the file but when I then   touch TEST.txt   nothing happens.....  Thanks -R

I want to have a *nix Samba share accessible by Windows clients.  Samba has an option to enable or disable filename case-sensitivity. Normally for windows access, this is disabled, so that fred==FRED=fReD.  However, this leads to one major gotcha, AFAICT:   On unix, you create two folders called "RODDY" and "roddy"  On Windows, you'll see both of the folders, but...  When you delete/rename/open one from Windows, you could end up deleting/renaming/etc either of them. You have no way of knowing which!.   So, my question is, how does Samba behave on windows if the case-sensitive flag is set "ON"? Can a user still see both folders, and have file operations work in a consistent manner?


I'm starting to think about protecting my inputs from SQL injection. I've read about PDO and mysqli and will be using those techniques. While I was researching protection against SQL injection, I had a thought about a technique. Whenever I have an input from a user, I could scan the input string and search for occurrences of "'" or "DROP" and if the string contains those characters, then I could just not proceed. Would this technique prevent a lot of SQL injection?  Thanks for your help.

If user input is inserted without modification into an SQL query, then the application becomes vulnerable to , like in the following example:  $unsafe_variable = $_POST['user_input'];   mysql_query("INSERT INTO `table` (`column`) VALUES ('$unsafe_variable')");   That's because the user can input something like value'); DROP TABLE table;--, and the query becomes:  INSERT INTO `table` (`column`) VALUES('value'); DROP TABLE table;--')   What can be done to prevent this from happening?


I am trying to create an Enterprise Wiki which have a metadata navigation and filtering, I though the requirement is straight forward in SharePoint 2013, but I have fall into a number of problems and bugs:-   First for all I have enabled the “Metadata Navigation and Filtering” service on the site level. I define the intended Term store from “Term Store Management”. Then from the “Metadata navigation settings  ” at the library level I define navigation using wiki Category. Then I have linked the Wiki Category site Colum to use the term store. The first problem is that the metadata navigation did not show up so I had to manually add a reference to the navigation using the SharePoint designer and I have edited the page layout.   I Put this markup in the beginning of the page  <%@ Register TagPrefix="wssuc" TagName="MetadataNavTree" src="~/_controltemplates/MetadataNavTree.ascx" %> I Put this code in the end of page’s code, after the next  tag        But now I fall into these two problems:-   When I click on any term inside the navigation tree it will always redirect to home page, instead of showing the wiki pages that are associated with this term. The metadata navigation tree will not be shown to contributor or reader users; only site administrator is able to see it.   Any idea of how to solve these problems?  BR

I have created main Enterprise Wiki site collection and I have enabled the  “Metadata Navigation and Filtering”. Then I have created a subsite also based on the enterprise Wiki. and I have defined that the metadata Navigation will be based on a predefined term set. Same as the steps mentioned in this link but the only difference is that I am using SharePoint 2013 and not 2010:-    Then when I navigate back to the sub site the term store showed up in the left side of the page, but after navigating through the term set it disappeared and I cannot re-showed it again?? Any idea what might cause this behavior?  BR  -:::EDITED:::-  After working on it I did the following:-   I modify the EnterpriseWiki.aspx page using SP designer , then i added the following at the beginning of the page:-  <%@ Register TagPrefix="wssuc" TagName="MetadataNavTree" src="~/_controltemplates/MetadataNavTree.ascx" %> and put this code in the end of page’s code.  <asp:Content id="Content1" runat="server" contentplaceholderid="PlaceHolderLeftActions"> <wssuc:MetadataNavTree id="mdnt" runat="server" /> </asp:Content> but the problem now is that  the navigation tree showed up, but currently if i click on a term it will always redirect to the home page , instead of displaying the wiki articles under this term as shown below:-      the second problem is that the term tree will be shown to site collection administrator only . the readers and contributors will not be able to see the term tree !!!!.


I'm trying to draw a cylindrospermopsin molecule using chemfig. There's my code  \documentclass[12pt]{standalone} \pagestyle{empty} \usepackage{standalone}  \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{makeidx} \usepackage{graphicx,graphics} \usepackage[brazil]{babel} \usepackage{chemfig} \begin{document} \chemfig{% A*6(-B*5(-R-S-\phantom{G}-\phantom{C})-C*6(-G-H-I(-K-[:-30]L*6(-M-N-O-P-Q=\phantom{L}))-J-\phantom{D})-D-E-F-) } \end{document}   I'm getting the following molecule    There's a way to link the S and G atoms correctly and make a single chemical bond between C and G  This is the entire cylindrospermopsin structure

\chemfig{*6(-(*5(---))-(*6(------))----)}   gives me that:   How do I connect it like this?     EDIT: Thanks to all suggestions I came up with this:  \documentclass{article}  usepackage{chemfig} \begin{document} \chemfig{[:30]*6(-([:6,1.0705]*5(-=-))-(*6(------))----)} \end{document}   Which produces this:    Explanation: The structure is made up from two regular hexagons and three sides of a regular pentagon, with the sides of the pentagon enlarged by a factor 1.0705 to make the two ends correspond to the vertices of the hexagons. This approach has an advantage in that the double bond is considered as part of a ring and drawn properly as such. The enlargement factor comes from solving the equation that sets the width between the two ends of the "half pentagon" equal to the width between the vertices of the hexagons:  2 cos(30 deg) l = l' + 2 sin(18 deg) l'  where l is the length of the hexagons' sides and l' is the unknown, the length of the pentagon sides. Solving for l' with l = 1 yields to  (2 cos(30 deg))/(1 + 2 sin(18 deg)) = 1.0705  The rotation has to be figured with some sums and differences over the angles involved in the structure. For brevity's sake let's just say the 6 deg angle comes from 18 + 18 - 30 deg.


So I have this:  export ti_arg='';  if [[ -t 1 ]] ; then    # allow us to kill container if attached to terminal    export ti_arg='-ti' fi  (   cd "$(dirname "$BASH_SOURCE")"     docker build <...> '.'     docker run "$ti_arg" --rm  "test-$commit_id" )   the problem is that even if $ti_arg is empty, the shell still sees it as an argument, and I get:     docker : invalid reference format   The only solution I can think of is and if/else to run basically the same docker command except for that one arg, or to find some pass through argument that I can use with docker, like this:  export ti_arg='--noop';  if [[ -t 1 ]] ; then    # allow us to kill container if attached to terminal    export ti_arg='-ti' fi   anyone have a good solution? I guess a CLI design would always provide a --noop flag for this use case 🤣🤣...now go update all your own CLI tools 🤣

Say I have a script doing:  some-command "$var1" "$var2" ...   And, in the event that var1 is empty, I'd rather that it be replaced with nothing instead of the empty string, so that the command executed is:  some-command "$var2" ...   and not:  some-command '' "$var2" ...   Is there a simpler way than testing the variable and conditionally including it?  if [ -n "$1" ]; then     some-command "$var1" "$var2" ...     # or some variant using arrays to build the command     # args+=("$var1") else     some-command "$var2" ... fi   Is there a parameter substitution than can expand to nothing in bash, zsh, or the like? I might still want to use globbing in the rest of the arguments, so disabling that and unquoting the variable is not an option.


On my Windows 10 system, the System process is continuously clocking ~12% CPU utilization (1 logical processor).  Process explorer shows that      ntoskrnl.exe!RtlSidHashInitialize+0x1450   thread is consuming all of it.  I read that it could be a driver issue, but I have no clue about how to nail it down to particular driver. Any clues on how to diagnose this further?

I have noticed that from some time my system is freezing and its probably caused by the high CPU usage which is caused by the system process.  All applications I'm running is the Skype, TeamSpeak and Chrome so it definitely shouldnt eat that amount of CPU.  You can see the problem itself and running processes in the screenshot below:    Sometimes CPU usage is reaching 90%, but the average usage is like 40-65%.  My PC parameters:   Windows 8 (customer preview) Intel Core i3 - 2350M 8 GB RAM   I'd appreciate any help attempt! Regards.  --UPDATE--  As the user below posted a great answer, I have noticed that the process that is eating the most CPU in the system is called Arthurx.sys, simple google tells that it's a TPLink driver (an wifi adapter, I have bought like 2 weeks ago!) drivers has been installed from the Windows MSDN, but also tried to install the drivers from the attached CD, but it doesn't help. From the system start, it is using like 5% of the CPU only, but after 2-4 hours of working it is growing up and reaching 40-60% of the CPU usage.  Device name: TPLink WN722N


Example (note the case): public int number; public int Number { get; set; }  What are the guidelines for the use of each? And what are the differences?

In C#, what makes a field different from a property, and when should a field be used instead of a property?


I tried to install lubuntu onto a xubuntu installation via the command line, using a sudo, as per an instruction I found somewhere on these forums by googling.  All went well for a while and then ended with failure because apparently I wasn't 'root'.  It asked the question 'are you root?'   I wasn't there to answer at the time. It seems to have timed out and finished the install process with a fail.  How to get this to install?

I get this error whenever I try to install programs using the terminal:  home@ubuntu:~$ apt-get install myunity E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?   Also I'm unable to install updates using the terminal.


I haven't been able to reproduce but I thought I should still report the issue.   After opening the app for the first time, clicking on More options to see current question in the browser, then switching to another question and clicking on Read this on our app then, finally, clicking on feed and loading a Hot question, resulted in having the two last questions loaded at the same time, overlapping.  Really weird looking especially when try to scroll up and down. I closed the app and tried to reproduce, unsuccessfully.  I'm using a Samsung Galaxy Tab 3.

I can reproduce that every time now, I go to a site, open an article, then to the next site, open another article. The Feed page pops up for a second, the article page lays over this with some some transparent areas (see picture). The same app-version is ok on a Smartphone with Android 4.4.2. I also sent in some bug reports.    Edit  1.0.71 isn't the solution yet. I go to Meta SE, then to an article. When I want back to Meta SE again, it crashes. Much earlier than before. I already sent in a bug report for this.  Another Edit  I can describe it better now. From the questions-page of a site I go to a post. When I use the back button, everything is ok, I can go to the next site. When I try to go to the next site directly from the post, it crashes. This only happens on the Nexus 10 with Android 5.1.1, App version 1.0.71. Hope this helps.  Edit3  This is fixed in 1.0.73 now. Thanks again.


I'm trying to build out my Careers 2.0 profile by connecting to a Stack Exchange account with 200+ rep. My Stack Overflow account has more than 200 rep, but the area where I can connect the account shows only 1 rep.  This is what I see:        The frustrating part is my account profile for meta.stackexchange.com does not display my SO account, but I do have one: .  Has anyone encountered this and found a solution?

When I go to , go to the "Stack Exchange" section, and click on "edit" under "Accounts", I see the following at the bottom of the account list (partially truncated for reasons of space):    Now, as you can see from my reputation here on MSO, I should have the association bonus on all sites where I have an account. Yet, for some reason, my accounts on Android, Italian, Sound Design, and Windows Phone are listed as having just 1 reputation. However, if you look at my account on each of these sites (, , , and ), you will see that I do, indeed, have 101 reputation from the association bonus.   At first, I thought the commonality among those four sites was that I hadn't performed any actions on them (not even voting), but it turns out that I have actually cast a vote on Android, so I don't really know what's up.   Note also that all of these accounts are at least a few weeks old (and my association bonus is even older than that), so this doesn't seem like it would be a caching issue or anything.


Hi I am modeling a truck, I modeled its half part and dup + mirrored it for other half. I have a problem and both parts haven't smoothness between them ?  How can I make them smooth ??    Thanks

Ok, when I applied my subsurf modifier my mirror modifier messes up... how can I fix this?  Here is the mesh before I applied the subsurf modifier.


Denote by $\mathbb{N}$ the set of natural numbers and by $2^{\mathbb N}$ the set of all subsets of $\mathbb N$. Let $E$ be some subset of $2^{\mathbb N}$ such that for  every pair of elements in $E$, one is a subset of the other. Clearly, $E$ could be countable by considering $E=\big\{\{1,\cdots, n\}, n\in\mathbb N\big\}$. My question is the following: could we find an example that $E$ is uncountable? Many thanks for the answer!

How to find an uncountable subset of $P(\mathbb{N})$ such that every two elements of it can be compared. In fact, give an uncountable subset of $P(\mathbb{N})$ such that has totality property. We mean by $P(\mathbb{N})$, the powerset of natural numbers set $\mathbb{N}$.


I was recently poking about and noticed that there is a discrepancy between the reputation shown on the  page and the  page. For me, the site shows I have 9507 for the year and the league shows I have 9950. The monthly and quarterly totals differ too. Other player have similar discrepancies. Why is there a discrepancy ?

When I went to the  to see my ranking in the reputation league, I saw this. Is this an error? My total reputation is less than my monthly reputation.


If I was to live and avoid terrible deficits, I would have to have urgent surgery.   Is this grammatically correct? Shouldn't it be "If I were"? Most importantly, what is the grammar rule governing this concept?

Possible Duplicates:             Which one is correct: "If I were a cop, I would wear a uniform" OR "If I was a cop, I would wear a uniform"?


It's currently impossible to read long lines of code in the Android app, as swiping will move from question to answer

So code blocks in questions and answers on the android app (inline included) seem to be scared of me putting my finger in them. When I poke them, they only move over two columns!  (For clarity, these are the code blocks that overlap the TextArea view because they've been eating too much)  The intended behaviour here is that when I press my finger into a code block, the touch event should register a drag; at current, I try to scroll inside a code block and I end up switching to question or answer view instead, over and over.  EDIT:  Something tells me this is status-bydesign because the text is deliberately cut off (probably inviting you to click on the code block and expand it; UX Decision?):