This is based on the list of Unicode replacements from http://www.unicodeit.net/ by Sven Kreiss and Kyle Cranmer.
I found myself switching off to unicodeit to get symbols, usually × and π, so often that I wanted to integrate it with the Mathstodon frontend.
Another benefit: doesn't look like total bums to people on non-MathJax-y instances
... and now I've made it not replace macros between LaTeX delimiters, so stuff like \(x^2\) works without faffing about
A Mastodon instance for maths people. The kind of people who make \(\pi z^2 \times a\) jokes.
\) for inline LaTeX, and
\] for display mode.