符号类
希腊字母
| 符号 |
写法 |
| \(\alpha\) |
\alpha |
| \(\beta\) |
\beta |
| \(\gamma\) |
\gamma |
| \(\delta \) |
\delta |
| \(\Delta \) |
\Delta |
| \(\epsilon\) |
\epsilon |
| \(\varepsilon\) |
\varepsilon |
| \(\zeta\) |
\zeta |
| \(\eta\) |
\eta |
| \(\theta \) |
\theta |
| \(\Theta \) |
\Theta |
| \(\vartheta\) |
\vartheta |
| \(\iota\) |
\iota |
| \(\kappa\) |
\kappa |
| \(\lambda \) |
\lambda |
| \(\Lambda \) |
\Lambda |
| \(\mu\) |
\mu |
| \(\nu\) |
\nu |
| \(\xi \) |
\xi |
| \(\Xi\) |
\Xi |
| \(\pi\) |
\pi |
| \(\Pi \) |
\Pi |
| \(\varpi \) |
\varpi |
| \(\rho \) |
\rho |
| \(\varrho \) |
\varrho |
| \(\sigma \) |
\sigma |
| \(\Sigma \) |
\Sigma |
| \(\varsigma \) |
\varsigma |
| \(\tau \) |
\tau |
| \(\upsilon \) |
\upsilon |
| \(\Upsilon\) |
\Upsilon |
| \(\phi \) |
\phi |
| \(\Phi \) |
\Phi |
| \(\varphi \) |
\varphi |
| \(\chi \) |
\chi |
| \(\psi \) |
\psi |
| \(\Psi \) |
\Psi |
| \(\omega \) |
\omega |
| \(\Omega\) |
\Omega |
运算符号
| 符号 |
写法 |
| \(x^2\) |
x^2 |
| \(\theta_i\) |
\theta_i |
| \(\frac{ x }{ y }\) |
\frac{ x }{ y } |
| \(\sqrt{ x }\) |
\sqrt{ x } |
| \(\partial J\) |
\partial J |
| \(\sum_{k=1}^{m}\) |
\sum_{k=1}^{m} |
| \(\int_{-\pi}^{\pi} x^2 {\rm d}x\) |
\int_{-\pi}^{\pi} x^2 {\rm d}x |
| \(\iiiint\) |
\iiiint |
| \(\oint\) |
\oint |
| \(\infty\) |
\infty |
| \(\nabla\) |
\nabla |
| \(\lim\limits_{n \rightarrow +\infty} \frac{1}{n(n+1)}\) |
\lim\limits_{n \rightarrow +\infty} \frac{1}{n(n+1)} |
| \(\prod_{i=0}^n \frac{1}{i^2}\) |
\prod_{i=0}^n \frac{1}{i^2} |
关系运算符
| 符号 |
写法 |
| \(\pm\) |
\pm |
| \(\times\) |
\times |
| \(\div\) |
\div |
| \(\nmid\) |
\nmid |
| \(\cdot\) |
\cdot |
| \(\ast\) |
\ast |
| \(\bigodot\) |
\bigodot |
| \(\bigotimes\) |
\bigotimes |
| \(\bigoplus\) |
\bigoplus |
| \(\leq\) |
\leq |
| \(\geq\) |
\geq |
| \(\neq\) |
\neq |
| \(\approx\) |
\approx |
| \(\equiv\) |
\equiv |
| \(\coprod\) |
\coprod |
集合运算符
| 符号 |
写法 |
| \(\emptyset\) |
\emptyset |
| \(\in\) |
\in |
| \(\notin\) |
\notin |
| \(\subset\) |
\subset |
| \(\supset\) |
\supset |
| \(\subseteq\) |
\subseteq |
| \(\supseteq\) |
\supseteq |
| \(\bigcap\) |
\bigcap |
| \(\bigcup\) |
\bigcup |
| \(\bigvee\) |
\bigvee |
| \(\bigwedge\) |
\bigwedge |
| \(\bigsqcup\) |
\bigsqcup |
三角运算符
| 符号 |
写法 |
| \(\bot\) |
\bot |
| \(\angle\) |
\angle |
| \(30^\circ\) |
30^\circ |
| \(\sin\) |
\sin |
| \(\cos\) |
\cos |
| \(\tan\) |
\tan |
| \(\cot\) |
\cot |
| \(\sec\) |
\sec |
| \(\csc\) |
\csc |
逻辑运算符
| 符号 |
写法 |
| \(\because\) |
\because |
| \(\therefore\) |
\therefore |
| \(\forall\) |
\forall |
| \(\exists\) |
\exists |
| \(\not=\) |
\not= |
| \(\not>\) |
\not> |
| \(\not\subset\) |
\not\subset |
戴帽符号
| 符号 |
写法 |
| \(\hat{y}\) |
\hat{y} |
| \(\check{y}\) |
\check{y} |
| \(\breve{y}\) |
\breve{y} |
连线符号
| 符号 |
写法 |
| \(\overline{a+b+c+d}\) |
\overline{a+b+c+d} |
| \(\underline{a+b+c+d}\) |
\underline{a+b+c+d} |
| \(\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0}\) |
\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0} |
箭头符号
| 符号 |
写法 |
| \(\uparrow\) |
\uparrow |
| \(\Uparrow\) |
\Uparrow |
| \(\downarrow\) |
\downarrow |
| \(\Downarrow\) |
\Downarrow |
| \(\rightarrow\) |
\rightarrow |
| \(\Rightarrow\) |
\Rightarrow |
| \(\leftarrow\) |
\leftarrow |
| \(\Leftarrow\) |
\Leftarrow |
| \(\longleftarrow\) |
\longleftarrow |
| \(\Longleftarrow\) |
\Longleftarrow |
| \(\longrightarrow\) |
\longrightarrow |
| \(\Longrightarrow\) |
\Longrightarrow |
矩阵类
| 符号 |
写法 |
| \(\vec{ a }\) |
\vec{ a } |
| $\left{ |
|
\begin{matrix}
a & b & c & d & e\
f & g & h & i & j \
k & l & m & n & o \
p & q & r & s & t
\end{matrix}
\right}\(| \left\{\begin{matrix}a & b & c & d & e\\ f & g & h & i & j \\ k & l & m & n & o \\ p & q & r & s & t\end{matrix} \right\} | |\)A=
\left{
\begin{matrix}
a & b & c & d & e\
f & g & h & i & j \
k & l & m & n & o \
p & q & r & s & t
\end{matrix}
\right}\(| A=\left\{ \begin{matrix} a & b & c & d & e \\ f & g & h & i & j \\ k & l & m & n & o \\ p & q & r & s & t \end{matrix}\right\}| |\)A=
\left{
\begin{matrix}
a & b & \cdots & e\
f & g & \cdots & j \
\vdots & \vdots & \ddots & \vdots \
p & q & \cdots & t
\end{matrix}
\right}$| A=\left{\begin{matrix} a & b & \cdots & e \ f & g & \cdots & j \ \vdots & \vdots & \ddots & \vdots \ p & q & \cdots & t \end{matrix}\right}|
