Add LaTex and mathpix-markdown-it as outputs

[sirus20x6]

Requested feature

Add Latex and mathpix-markdown-it formats as available outputs

nougat uses Mathpix Markdown and it creates beautiful formulas because it's powered by LaTex

example paper I had on hand The Impact of Initialization
on LoRA Finetuning Dynamics

Formula from the paper:

docling version in markdown

and this is from nougat

[znsoftm]

Good idea. It is neccesary for researchers.