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+title = "Mathematical Notations Support"
+date = 2021-05-05
+updated = 2022-01-01
+[taxonomies]
+categories = ["Features"]
+tags = ["KaTeX", "Mathematics"]
+[extra]
+math = true
++++
+
+You can use [$\KaTeX$](https://katex.org) to render mathematical notations.
+
+You can enable the $\KaTeX$ support globally, per-section or per-page basis.
+<!-- more -->
+### Enable Globally
+
+To enable the $\KaTeX$ support globally, add `math = true` under `[extra]` of the `config.toml`
+at your site root. Now every section and page of your site will load the KaTeX [autorender extension](https://katex.org/docs/autorender.html).
+
+```toml
+[extra]
+math = true
+```
+
+### Per-section Basis
+
+To enable the $\KaTeX$ support in a particular section, add `math = true` under `[extra]` in the `[SECTION_NAME]/_index.md`. Now every page under this section will load the KaTeX
+[autorender extension](https://katex.org/docs/autorender.html).
+
+```md
++++
+[extra]
+math = true
++++
+```
+
+### Per-page Basis
+
+To enable the $\KaTeX$ support in a particular page, add `math = true` under `[extra]` in the page's
+frontmatter. Now this page will load the $\KaTeX$ [autorender extension](https://katex.org/docs/autorender.html).
+
+```markdown
++++
+[extra]
+math = true
++++
+```
+
+It is a good practice to enable $\KaTeX$ support on a per-page basis, since this will only load the
+required files on that particular page, without affecting the page load speed of other pages.
+If your site is not math-heavy, please do NOT enable this feature globally or per-section basis.
+
+## Usage
+
+Wrap any [valid](https://katex.org/docs/supported.html) $\KaTeX$ syntax with `$...$` for inline
+Mathematics and `$$...$$` for block Mathematics.
+
+### Inline Mathematics
+
+This is the most beautiful equation I've ever seen:
+
+```
+$e^{i\pi}+1=0$
+```
+$e^{i\pi}+1=0$
+
+### Block Mathematics
+
+Some Mathematics in display mode is fair enough:
+
+```
+$$
+\int_0^1 x^2 dx
+$$
+```
+$$
+\int_0^1 x^2 dx
+$$
+
+### Another Example
+
+```
+$$
+f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi
+$$
+```
+
+$$
+f(x) = \int_{-\infty}^\infty\hat f(\xi)\,e^{2 \pi i \xi x}\,d\xi
+$$