feat: add katex math typesetting

content/docs/examples/code.md

@@ -1,7 +1,7 @@
 ---
 title: "Code"
-description: "Code highlighting examples"
-lead: "Code highlighting examples"
+description: "Code highlighting examples."
+lead: "Code highlighting examples."
 date: 2021-03-16T08:43:34+01:00
 lastmod: 2021-03-16T08:43:34+01:00
 draft: false

content/docs/examples/math.md

@@ -0,0 +1,44 @@
+---
+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
+---
+
+## 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.