What is Petr Vopěnka?
{{Infobox scientist | name = Petr Vopěnka | image = Vopenka.jpg | caption = Petr Vopěnka in 2009 | birth_date = {{birth date|1935|05|16|df=y}} | birth_place = [[Prague]], [[Czechoslovakia]] |death_date = {{death date and age|2015|03|20|1935|05|16|df=y}} |death_place = | residence = | citizenship = | nationality = [[Czech people|Czech]] | fields = | workplaces = | alma_mater = Mathematics and Physics Faculty, [[Charles University in Prague]] | doctoral_advisor = | academic_advisors = | doctoral_students = [[Bohuslav Balcar]]<br> [[Lev Bukovský]]<br> [[Jaroslav Chudáček]]<br> [[Karel Čuda]]<br> [[Petr Hájek]]<br> [[Karel Hrbáček]]<br> [[Thomas Jech]]<br> [[Magdaléna Krátká]]<br> [[Josef Mlček]]<br> [[Antonín Sochor]]<br> [[Alena Vencovská]]<br> [[Peter Vojtáš]]<br> [[Blanka Vojtášková]]<br> [[Pavol Zlatoš]] | notable_students = | known_for = | author_abbrev_bot = | author_abbrev_zoo = | influences = | influenced = | awards = | footnotes = }} '''Petr Vopěnka''' (16 May 1935 – 20 March 2015) was a [[Czech people|Czech]] [[mathematician]]. In the early 1970s, he established the [[alternative set theory]]. Since the mid-eighties he concerned himself with philosophical questions of mathematics. ==Works by Petr Vopěnka== *{{cite book | author = Petr Vopěnka | year = 2004 | title = {{lang|cs|Horizonty nekonečna}} | publisher = Moraviapress | location = Prague | isbn = 80-86181-66-9 }} *{{cite book | author = Petr Vopěnka | year = 1999 | title = {{lang|cs|Úhelný kámen evropské vzdělanosti a moci}} | publisher = Práh | location = Prague | isbn = 80-7252-022-9 }} *{{cite book | author = Petr Vopěnka | year = 1989 | title = {{lang|sk|Introduction to mathematics in the alternative set theory}} | publisher = Alfa | location = Bratislava | isbn = 80-05-00438-9 }} *{{cite book | author = Petr