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 } |
\(\sqrt{ x }\) | \sqrt |
\(\partial J\) | \partial J |
\(\sum_{k=1}^{m}\) | \sum_{k=1}^ |
\(\int_{-\pi}^{\pi} x^2 {\rm d}x\) | \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} |
\(\prod_{i=0}^n \frac{1}{i^2}\) | \prod_{i=0}^n \frac{1} |
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 |
\(\check{y}\) | \check |
\(\breve{y}\) | \breve |
连线符号
符号 | 写法 |
---|---|
\(\overline{a+b+c+d}\) | \overline |
\(\underline{a+b+c+d}\) | \underline |
\(\overbrace{a+\underbrace{b+c}_{1.0}+d}^{2.0}\) | \overbrace{a+\underbrace{b+c}_{1.0}+d}^ |
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 |
$\left{ | |
\begin | |
a & b & c & d & e\ | |
f & g & h & i & j \ | |
k & l & m & n & o \ | |
p & q & r & s & t | |
\end | |
\right}$ | \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} |
$A= | |
\left{ | |
\begin | |
a & b & c & d & e\ | |
f & g & h & i & j \ | |
k & l & m & n & o \ | |
p & q & r & s & t | |
\end | |
\right}$ | 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} |
$A= | |
\left{ | |
\begin | |
a & b & \cdots & e\ | |
f & g & \cdots & j \ | |
\vdots & \vdots & \ddots & \vdots \ | |
p & q & \cdots & t | |
\end | |
\right}$ | A=\left{\begin{matrix} a & b & \cdots & e \ f & g & \cdots & j \ \vdots & \vdots & \ddots & \vdots \ p & q & \cdots & t \end{matrix}\right} |