Mathjax
Math equations can be rendered using Mathjax syntax with AMS symbol support.
Optionally enable this on a per-page basis by adding mathjax: true to your frontmatter.
Then, use $$ ... $$ on a line by itself to render a block equation:
$$ | Pr_{x \leftarrow P_{1}} [A(x) = 1] - Pr_{x \leftarrow …