Stack has built-in support for math typesetting using KaTeX.

It’s not enabled by default side-wide, but you can enable it for individual posts by adding math: true to the front matter. Or you can enable it side-wide by adding math = true to the params.article section in config.toml.

Inline math

This is an inline mathematical expression: $\varphi = \dfrac{1+\sqrt5}{2}= 1.6180339887…$

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$\varphi = \dfrac{1+\sqrt5}{2}= 1.6180339887…$

Block math

$$\varphi = 1+\frac{1} {1+\frac{1} {1+\frac{1} {1+\cdots} } }$$

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$$
    \varphi = 1+\frac{1} {1+\frac{1} {1+\frac{1} {1+\cdots} } } 
$$

$$f(x) = \int_{-\infty}^\infty\hat f(\xi),e^{2 \pi i \xi x},d\xi$$

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$$
    f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi
$$