Considering to join a lemmy instance not the least because it says "you can also blog on lemmy" (https://join-lemmy.org/docs/users/06-other-features.html?highlight=blog#lemmy-as-a-blog) I have one question though:

Can I have MathJax or KaTeX to do formulas?

#lemmy @asklemmy #mathjax #katex #fedihelp

Other Features

I am not aware of any such feature on Lemmy Look into dokie.li or WordPress with ActivityPub plugin and LaTeX plugin
dokieli

That won’t really help with others seeing the content correctly, though.