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 = mc^2 $$.

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