# Integrating MathJax to Ghost

If you are using mathematical functions, MathJax is the first joice.

To integrate it with ghost, simply open up `ghost/content/themes/YOUR_THEME_NAME/default.hbs`

And insert the following before the `</body>`

tag:

`{{! Mathjax configuration}}`

<script type="text/javascript" src="http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML"></script>

<script type="text/x-mathjax-config">

MathJax.Hub.Config({

tex2jax: {inlineMath: [['`,'`

], ['\(','\)']]}

});

</script>

And now if you create a new post and add something like `$\sum \frac{1}{n} = H_n$`

it should look like this: $\sum \frac{1}{n} = H_n$

A little hint: you have to escape underscores in your function to get it working properly!(_ instead of _) like in `$\sum_{n=1}^\infty \frac{1}{n} = H_n$`

=> $\sum_{n=1}^\infty \frac{1}{n} = H_n$