Math

$...$ is inline math and $$ ... $$ is a block. KaTeX draws them while the deck is generated, and its CSS and fonts are only part of the build when a deck uses math.

Inline $\sqrt{3x-1}+(1+x)^2$

$ {1|2|all}
\begin{aligned}
\nabla \cdot \vec{E} &= \frac{\rho}{\varepsilon_0} \\
\nabla \cdot \vec{B} &= 0
\end{aligned}
$

• {1|2|all} after the opening $$ steps through the formula's lines with clicks, with the same range syntax as code.
• Inline math follows Slidev's rule, so $5 and $10 stays text.
• Inside math, {{ is math, never an Angular interpolation.
• mhchem is not loaded.

A setup/katex.ts file returns KaTeX options such as macros. See Setup hooks.