This theme supports rendering beautiful math in inline and display modes using MathJax 3 engine. You just need to surround your math expression with $$, like $$ E = mc^2 $$. If you leave it inside a paragraph, it will produce an inline expression, just like E=mc2.

To use display mode, again surround your expression with $$ and place it as a separate paragraph. Here is an example:

k=1|x,ek|2x2

You can also use \begin{equation}...\end{equation} instead of $$ for display mode math. MathJax will automatically number equations:

(1)(k=1nakbk)2(k=1nak2)(k=1nbk2)

and by adding \label{...} inside the equation environment, we can now refer to the equation using \eqref.

Note that MathJax 3 is a major re-write of MathJax that brought a significant improvement to the loading and rendering speed, which is now on par with KaTeX.