Supporting math macros

I know this is not supposed to support every single plugin out there, but my notes are mostly math, and I rely heavily on using a preamble via the Extended MathJax plugin so that I can type stuff like `\H` instead of `\mathcal{H}`. Is there a way to make such macros work? I think such a scenario is kind of common, plenty of people use Obsidian for maths.