在MarkDown中可以插入数学公式，但是在博客园和有道云笔记之中的数学公式插入方式略有不同（博客园需要先在后台选项中开启插入数学公式选项）：
| 代码 | 行内公式 | 整行公式 |
|---|---|---|
| 博客园 | $数学公式$ |
$$数学公式$$ |
| 有道云笔记 | ` $ 数学公式 $ ` |
``` math 数学公式 ```` |
二元运算符及一般数学符号
| 示例 | 代码 | 示例 | 代码 |
|---|---|---|---|
| \(\frac{a}{b}\) | \frac{a}{b} | \(\cdot\) | \cdot |
| \(\pm\) | \pm | \(\mp\) | \mp |
| \(\times\) | \times | \(\div\) | \div |
| \(\star\) | \star | \(\ast\) | \ast |
| \(\cup\) | \cup | \(\cap\) | \cap |
| \(\vee\) | \vee or \lor | \(\wedge\) | \wedge or \land |
| \(\oplus\) | \oplus | \(\otimes\) | \otimes |
| \(\circ\) | \circ | \(\bullet\) | \bullet |
| \(\bigtriangleup\) | \bigtriangleup | \(\bigtriangledown\) | bigtriangledown |
| \(\nabla\) | \nabla | \(\exists\) | \exists |
| \(\partial\) | \partial | \(\infty\) | \infty |
| \(\forall\) | \forall | \(\surd\) | \surd |
| \(\angle\) | \angle | \(\bot\) | \bot |
希腊字母
| 示例 | 代码 | 示例 | 代码 |
|---|---|---|---|
| \(\alpha\) | \alpha | \(\theta\) | \theta |
| \(\beta\) | \beta | \(\upsilon\) | \upsilon |
| \(\pi\) | \pi | \(\phi\) | \phi |
| \(\gamma\) | \gamma | \(\varphi\) | \varphi |
| \(\rho\) | \rho | \(\delta\) | \delta |
| \(\lambda\) | \lambda | \(\epsilon\) | \epsion |
| \(\mu\) | \mu | \(\psi\) | \psi |
| \(\sigma\) | \sigma | \(\omega\) | \omega |
| \(\chi\) | \chi | \(\kappa\) | \kappa |
| \(\xi\) | \xi | \(\eta\) | \eta |
| \(\Lambda\) | \Lambda | \(\Gamma\) | \Gamma |
| \(\Omega\) | \Omega | \(\Psi\) | \Psi |
“大”运算符
| 示例 | 代码 | 示例 | 代码 |
|---|---|---|---|
| \(\sum^{n}_{i}\) | \sum^{n}_{i} | \(\bigcup\) | \bigcup |
| \(\bigvee\) | \bigvee | \(\bigwedge\) | \bigwedge |
| \(\prod\) | \prod | \(\coprod\) | \coprod |
| \(\int\) | \int | \(\oint\) | \oint |
| \(\bigoplus\) | \bigoplus | \(\bigotimes\) | \bigotimes |
二元关系
| 示例 | 代码 | 示例 | 代码 |
|---|---|---|---|
| \(\leq\) | \leq or \le | \(\geq\) | \geq or \ge |
| \(\equiv\) | \equiv | \(\approx\) | \approx |
| \(\lll\) | \lll | \(\ggg\) | \ggg |
| \(\simeq\) | \simeq | \(\sim\) | \sim |
| \(\subset\) | \subset | \(\supset\) | \supset |
| \(\subseteq\) | \subseteq | \(\supseteq\) | \supseteq |
| \(\in\) | \in | \(\owns\) | \ni or \owns |
| \(\notin\) | \notin | \(\ne\) | \neq or \ne |
| \(\cong\) | \cong | \(\propto\) | \propto |
| \(\mid\) | \mid | \(\parallel\) | \parallel |
| \(\varsubsetneqq\) | \varsubsetneqq | \(\varsupsetneqq\) | \varsupsetneqq |
| \(\Rrightarrow\) | \Rrightarrow | \(\Lleftarrow\) | \Lleftarrow |
| \(\upharpoonright\) | \upharpoonright | \(\downharpoonright\) | \downharpoonright |
大定界符
| 示例 | 代码 | 示例 | 代码 |
|---|---|---|---|
| \(\lgroup\) | \lgroup | \(\rgroup\) | \rgroup |
| \(\lmoustache\) | \lmoustache | \(\rmoustache\) | \rmoustache |
| \(\Arrowvert\) | \Arrowvert | \(\bracevert\) | \bracevert |
分段函数
示例 ：
\[函数名=\begin{cases}
公式1 & 条件1 \\
公式2 & 条件2 \\
公式3 & 条件3
\end{cases}\]
公式1 & 条件1 \\
公式2 & 条件2 \\
公式3 & 条件3
\end{cases}\]
代码：
函数名=\begin{cases}
公式1 & 条件1 \\
公式2 & 条件2 \\
公式3 & 条件3
\end{cases}
&表示对齐，\\用来表示换行， \qquad可以表示空格