Setting Up MathJax LaTeX Support

This is easy, just add the following snippet into the body of the _layout/post.html:

<script type="text/javascript"
  src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML">
</script>

This will add MathJax support to all posts. To typset LaTeX, just surround any LaTeX syntax with two dollar signs, like this:

$$ (u,v) = \int_\Omega u(x) v^*(x) d\Omega $$

to produce

If you also want MathJax support on website pages, add the same code snippet to _layout/page.html.