Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

RR is a generator of syntax ... diagrams from EBNF rules, RR also can perform some grammar transformation, e.g. factorization and elimination of direct recursion. To some extent this transforms BNF to ...

Easy-to-understand visualizations for Ranked-Choice Voting elections: sankey, bargraphs, and tables. Interactive and print-friendly options available. Supports most common tabulators.