Writing proofs

Advice on Mathematica Writing by Keith Conrad

Examples of proofs by induction by K. Conrad

Other Combinatorics textbooks:

Drawing Figures with LaTeX

A simple visual editor for writing diagrams and converting it to Tikz github.com/yishn/tikzcd-editor, try it out at https://tikzcd.yichuanshen.de

Jobs requiring math skills

Math students, connect with prospective employers here: MAA Career Resource Center

Miscellaneous

Use CamScanner app or another scan app to turn your hand-written work into PDF.