Purpose

This extension loads a tex file whenever a notebook is loaded, then re-runs mathjax. It's useful if you have several notebooks that use a common set of latex macros, so you don't have to copy the macros to each notebook.

Usage

Simply put your latex macros in a file named latexdefs.tex, in the same directory as your notebook.

Credit

This is derived entirely from the nbextension jupyter_latex_envs, with help from its author @jfbercher.