—
layout: post
title: a post with math
date: 2015-10-20 11:12:00-0400
description: an example of a blog post with some math
categories: sample-posts
related_posts: false
—
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This theme supports rendering beautiful math in inline and display modes using MathJax 3 engine. You just need to surround your math expression with $$, like $$ E = mc^2 $$. If you leave it inside a paragraph, it will produce an inline expression, just like \(E = mc^2\).
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To use display mode, again surround your expression with $$ and place it as a separate paragraph. Here is an example:
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$$
\sum_{k=1}^\infty |\langle x, e_k \rangle|^2 \leq |x|^2
$$
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You can also use \begin{equation}...\end{equation} instead of $$ for display mode math.
MathJax will automatically number equations:
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\begin{equation}
\label{eq:cauchy-schwarz}
\left( \sum_{k=1}^n a_k b_k \right)^2 \leq \left( \sum_{k=1}^n a_k^2 \right) \left( \sum_{k=1}^n b_k^2 \right)
\end{equation}
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and by adding \label{...} inside the equation environment, we can now refer to the equation using \eqref.
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Note that MathJax 3 is a major re-write of MathJax that brought a significant improvement to the loading and rendering speed.