MathJax is a markup language for formatting mathematics, and has been supported on this site since January 2019.
- Text formatting rules #maths for our support
- http://asciimath.org/ for the system used (in a nutshell)
- https://www.mathjax.org/ for broad documentation
- http://detexify.kirelabs.org/classify.html for a site converting hand-drawn symbols to LaTeX