himalaya VS nabla.nvim

Before you going deeper, take a look at himalaya if it fit to your needs.

https://github.com/soywod/himalaya this one also is a thing, has a vim plugin too

Take a look at Himalaya: https://github.com/soywod/himalaya

You can use himalaya for that

We live in a time of a Renaissance of terminal tools. I recently discovered Himalaya[1], a command line tool for email, and I really like it. I'm also interested in exploring a new tool for calendar called qcal[2]. I'm kicking around writing a chat client for GroupMe for the terminal right now. That way I could finally ditch pidgin.

Like the OP, I spend all day in tmux these days, which is in many ways the most superior UI[3]. As a bonus, CLI tools are often cross-platform and very easy to write.

1: https://github.com/soywod/himalaya

I've been thinking of setting up a note taking enviroment in neovim. I've been searching around, and plugins as vimwiki, and nabla.nvim are great choices for me. I'm using Notion right now because of the great commands that brings that make the note taking pretty enjoyable. But the dividers, or putting background to text are features that I don't wanna lose, if possible.

So, to answer your question - image rendering while possible theoretically, practically is very hard to achieve. This also goes for math (unless you render math with ascii symbols).

Closest is projects that convert it to ASCII/unicode like nabla.nvim

nabla.nvim

for latex visualization there is: https://github.com/jbyuki/nabla.nvim