Currently no support.

I use CKEditor 5 which is very very nice, but still a bit immature in its plugin ecosystem.

LaTex support is definitely something I've been thinking about, but I'm still not sure about how to approach it.

This might be also one of the showcases for the scripting support. User can load e.g. KaTex as a script, bind it to the "code note" which it will render into a view e.g. above the code editor. But that's not very user friendly for sure.

You should look at https://katex.org/

Two popular note taking apps which do this are Dropbox Paper and Notion.so, but they only support inline math. A niche app that does both is Gitbook but they’re a newer company and I’m not sure about personal plans.

Edit: I should add neither of these support code execution. I would really love if someone could point to a Wikipedia / knowledge base composed of Jupyter notebooks but have the functionality inverted — primarily focused on note taking and secondarily on code execution.

I've made a small userscript for inline math in Notion.so: https://github.com/evertheylen/notion-inline-math

I'm using it extensively myself :)

Want to add on that TeX support is pretty much the only thing holding me back from this. I feel like KaTeX is not only easy to integrate but also full featured.

I'd be incredibly impressed if you could render full LaTeX though - e.g. via a renderer switch and a PDF viewer like PDF.js.

I looked a bit more, and found this demo: https://www.youtube.com/watch?v=XwNjwP9DMAc

It seems pretty great, but there's no code available as far as I can tell.

hackmd.io has a pretty nice latex supported. I find it much better for math notation than dropbox paper. It also has docker image available incase the service happens to shutdown.

https://hackmd.io/