如果要在Octopress使用數學符號，首先先安裝 kramdown
1 | gem install kramdown |
接著修改_config.yml
將rdiscount改成kramdown
將以下這段代碼塞入 /source/_includes/custom/head.html
解決滑鼠右鍵按下會一片空白的問題
以下是範例：
$$
\begin{align}
& \phi(x,y) = \phi \left(\sum_{i=1}^n x_ie_i, \sum_{j=1}^n y_je_j \right)
= \sum_{i=1}^n \sum_{j=1}^n x_i y_j \phi(e_i, e_j) = \
& (x_1, \ldots, x_n) \left( \begin{array}{ccc}
\phi(e_1, e_1) & \cdots & \phi(e_1, e_n) \
\vdots & \ddots & \vdots \
\phi(e_n, e_1) & \cdots & \phi(e_n, e_n)
\end{array} \right)
\left( \begin{array}{c}
y_1 \
\vdots \
y_n
\end{array} \right)
\end{align}
$$
試試看插入LaTeX數學式：$\exp(-\frac{x^2}{2})$