#
Math and Code Formatting

Lagrange comes out of the box with MathJax and syntax highlighting through fenced code blocks. MathJax allows you to display mathematical equations in your posts through the use of LaTeX. Syntax highlighting allows you to display source code in different colors and fonts depending on what programming language is being displayed.

As always, Jekyll offers support for GitHub Flavored Markdown, which allows you to format your posts using the Markdown syntax. Examples of these text formatting features can be seen below. You can find this post in the `_posts`

directory.

## MathJax

The SchrÃ¶dinger equation is a partial differential equation that describes how the quantum state of a quantum system changes with time:

Joseph-Louis Lagrange was an Italian mathematician and astronomer who was responsible for the formulation of Lagrangian mechanics, which is a reformulation of Newtonian mechanics.

MathJax TeX Test Page
When $a \ne 0$, there are two solutions to \(ax^2 + bx + c = 0\) and they are
$$x = {-b \pm \sqrt{b^2-4ac} \over 2a}.$$
### MathJax
Let's test some inline math $x$, $y$, $x_1$, $y_1$.
Now a inline math with special character: $\|\psi\rangle$, $x'$, $x^\*$ and $\|\psi_1\rangle = a\|0\rangle + b\|1\rangle$
Test a display math:
$$
|\psi_1\rangle = a|0\rangle + b|1\rangle
$$
Is it O.K.?
Test a display math with equation number:
\begin{equation}
|\psi_1\rangle = a|0\rangle + b|1\rangle
\end{equation}
Is it O.K.?
Test a display math with equation number:
$$
\begin{align}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \\
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align}
$$
Is it O.K.?
And test a display math without equaltion number:
$$
\begin{align*}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \\
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align*}
$$
Is it O.K.?
Test a display math with equation number:
$$
\begin{align}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \\
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align}
$$
Is it O.K.?
And test a display math without equaltion number:
$$
\begin{align*}
|\psi_1\rangle &= a|0\rangle + b|1\rangle \\
|\psi_2\rangle &= c|0\rangle + d|1\rangle
\end{align*}
$$
## Code Highlighting
You can find the full list of supported programming languages [here](https://github.com/jneen/rouge/wiki/List-of-supported-languages-and-lexers).
```css
#container {
float: left;
margin: 0 -240px 0 0;
width: 100%;
}
```
```ruby
def print_hi(name)
puts "Hi, #{name}"
end
print_hi('Tom')
#=> prints 'Hi, Tom' to STDOUT.
```
Another option is to embed your code through [Gist](https://en.support.wordpress.com/gist/).

Written on
August
8th,
2015
by
Paul Le
Feel free to share!