Noether's Theorem in a Nutshell (2020)
As a dilletante, I sadly found this post rather impenetrable.<p>* There is a function L(q,q&#x27;), the Lagrangian. How do I compute this function? Does it have an analytical expression? How does it depend on p or F?<p>* There is a parameter s, &quot;sending q to some new position q(s)&quot;. Do you mean q is actually a function q(s)? Do I <i>define</i> q(s) any way I want, or do I <i>solve</i> q(s) given the constraints of the system?<p>I wonder whether working out a very simple example, e.g. point moving on a line subject to force F, would have made this post a bit more readable for a wider audience.<p>Stealth Edit: Many many thanks for the explanations! This makes so much more sense now.