Physics

Pretty Much Physics 

https://www.youtube.com/channel/UCVa8De6q6aOjtx_TEiDBaMw

The Use of Group Theory in Particle Physics

https://www.youtube.com/watch?v=NOMUnMuxDZY

https://www.youtube.com/watch?v=nzmJb7KITxc&list=PLOzRYVm0a65dGef0BEA_CWbVCO6BtMZhE&index=1

dynamic system

https://www.impan.pl/~feliksp/holomorf-past.html

Ian Short

https://matthewjacques.info/

Pramod Padmanabhan (semigroup)

maxima solve equation

 maxima

http://cs.swan.ac.uk/~csoliver/ok-sat-library/internet_html/doc/doc/Maxima/BookWoollett/mbe4solve.pdf