---
title: "Math"
description: "Math typesetting examples."
lead: "Math typesetting examples."
date: 2021-03-16T10:46:05+01:00
lastmod: 2021-03-16T10:46:05+01:00
draft: false
images: []
menu:
  docs:
    parent: "examples"
weight: 210
toc: true
---

[KaTeX](https://katex.org/) is switched off by default. Enable it by setting `kaTex = true` in the `[options]` section of `./config/_default/params.toml`.

## Example 1

_Excerpt taken from [Supernova Neutrinos](https://neutrino.leima.is/book/introduction/supernova-neutrinos/)_

### Markdown

```md
The average energy of the neutrinos $\langle E \rangle$ emitted during a supernova explosion is of the order of 10MeV, and the neutrino luminosity at the early epoch of the explosion is approximately $10^{52}\mathrm{ergs\cdot s^{-1}}$.
Therefore, the number density of the neutrinos at the radius $R$ is

$$
\begin{equation*}
   n \sim  10^{18} \mathrm{cm^{-3}} \left(\frac{100\mathrm{km}}{R}\right)^2 \left(\frac{10\mathrm{MeV}}{\langle E \rangle}\right).
\end{equation*}
$$
```

### HTML

The average energy of the neutrinos $\langle E \rangle$ emitted during a supernova explosion is of the order of 10MeV, and the neutrino luminosity at the early epoch of the explosion is approximately $10^{52}\mathrm{ergs\cdot s^{-1}}$.
Therefore, the number density of the neutrinos at the radius $R$ is

$$
\begin{equation*}
   n \sim  10^{18} \mathrm{cm^{-3}} \left(\frac{100\mathrm{km}}{R}\right)^2 \left(\frac{10\mathrm{MeV}}{\langle E \rangle}\right).
\end{equation*}
$$

It turns out that the ambient dense neutrino medium has a significant impact on neutrino oscillations, which has been intensely investigated in the last decade.