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Latex 符号

2019-06-09

Jarvis

Wiki_Latex

1. 常用数学符号

内容来源: 一份不太简短的 \(LaTeX2\epsilon\) 介绍

1. 常用数学符号

导入数学符号包

\usepackage{amssymb}

1.1 上标下标

代码	符号
`\overline{m+n}`	\(\overline{m+n}\)
`\underline{m+n}`	\(\underline{m+n}\)
`\overbrace{1+2+\cdots+n}_{n}`	\(\overbrace{1+2+\cdots+n}_{n}\)
`\underbrace{1+2+\cdots+n}_{n}`	\(\underbrace{1+2+\cdots+n}_{n}\)
`\vec a`	\(\vec a\)
`\overrightarrow{AB}`	\(\overrightarrow{AB}\)

1.2 数学符号表

1.2.1 重音符

代码	符号	代码	符号	代码	符号	代码	符号
`\hat{a}`	\(\hat{a}\)	`\check{a}`	\(\check{a}\)	`\tilde{a}`	\(\tilde{a}\)	`\acute{a}`	\(\acute{a}\)
`\grave{a}`	\(\grave{a}\)	`\dot{a}`	\(\dot{a}\)	`\ddot{a}`	\(\ddot{a}\)	`\breve{a}`	\(\breve{a}\)
`\bar{a}`	\(\bar{a}\)	`\vec{a}`	\(\vec{a}\)	`\widehat{A}`	\(\widehat{A}\)	`\widetilde{A}`	\(\widetilde{A}\)

1.2.2 小写希腊字母

代码	符号	代码	符号	代码	符号	代码	符号
`\alpha`	\(\alpha\)	`\theta`	\(\theta\)	`o`	\(o\)	`\upsilon`	\(\upsilon\)
`\beta`	\(\beta\)	`\vartheta`	\(\vartheta\)	`\pi`	\(\pi\)	`\phi`	\(\phi\)
`\gamma`	\(\gamma\)	`\iota`	\(\iota\)	`\varpi`	\(\varpi\)	`\varphi`	\(\varphi\)
`\delta`	\(\delta\)	`\kappa`	\(\kappa\)	`\rho`	\(\rho\)	`\chi`	\(\chi\)
`\epsilon`	\(\epsilon\)	`\lambda`	\(\lambda\)	`\varrho`	\(\varrho\)	`\psi`	\(\psi\)
`\varepsilon`	\(\varepsilon\)	`\mu`	\(\mu\)	`\sigma`	\(\sigma\)	`\omega`	\(\omega\)
`\zeta`	\(\zeta\)	`\nu`	\(\nu\)	`\varsigma`	\(\varsigma\)	`\eta`	\(\eta\)
`\xi`	\(\xi\)	`\tau`	\(\tau\)

1.2.3 大写希腊字母

代码	符号	代码	符号	代码	符号	代码	符号
`\Gamma`	\(\Gamma\)	`\Lambda`	\(\Lambda\)	`\Sigma`	\(\Sigma\)	`\Psi`	\(\Psi\)
`\Delta`	\(\Delta\)	`\Xi`	\(\Xi\)	`\Upsilon`	\(\Upsilon\)	`\Omega`	\(\Omega\)
`\Theta`	\(\Theta\)	`\Pi`	\(\Pi\)	`\Phi`	\(\Phi\)

1.2.4 二元关系符号

可以加前缀 \not 来得到否定形式

代码	符号	代码	符号	代码	符号
`<`	\(<\)	`>`	\(>\)	`=`	\(=\)
`\leq or \le`	\(\leq\)	`\geq or \ge`	\(\geq\)	`\equiv`	\(\equiv\)
`\ll`	\(\ll\)	`\gg`	\(\gg\)	`\doteq`	\(\doteq\)
`\prec`	\(\prec\)	`\succ`	\(\succ\)	`\sim`	\(\sim\)
`\preceq`	\(\preceq\)	`\succeq`	\(\succeq\)	`\simeq`	\(\simeq\)
`\subset`	\(\subset\)	`\supset`	\(\supset\)	`\approx`	\(\approx\)
`\subseteq`	\(\subseteq\)	`\supseteq`	\(\supseteq\)	`\cong`	\(\cong\)
`\sqsubset`	\(\sqsubset\)	`\sqsupset`	\(\sqsupset\)	`\Join`	\(\Join\)
`\sqsubseteq`	\(\sqsubseteq\)	`\sqsupseteq`	\(\sqsupseteq\)	`\bowtie`	\(\bowtie\)
`\in`	\(\in\)	`\ni, \owns`	\(\ni\)	`\propto`	\(\propto\)
`\vdash`	\(\vdash\)	`\dashv`	\(\dashv\)	`\models`	\(\models\)
`\mid`	\(\mid\)	`\parallel`	\(\parallel\)	`\perp`	\(\perp\)
`\smile`	\(\smile\)	`\frown`	\(\frown\)	`\asymp`	\(\asymp\)
`:`	\(:\)	`\notin`	\(\notin\)	`\neq or \ne`	\(\neq\)

注: \sqsubset, \sqsupset 和 \Join 需要使用宏包 latexsym

1.2.5 二元运算符

代码	符号	代码	符号	代码	符号
`+`	\(+\)	`−`	\(-\)
`\pm`	\(\pm\)	`\mp`	\(\mp\)	`\triangleleft`	\(\triangleleft\)
`\cdot`	\(\cdot\)	`\div`	\(\div\)	`\triangleright`	\(\triangleright\)
`\times`	\(\times\)	`\setminus`	\(\setminus\)	`\star`	\(\star\)
`\cup`	\(\cup\)	`\cap`	\(\cap\)	`\ast`	\(\ast\)
`\sqcup`	\(\sqcup\)	`\sqcap`	\(\sqcap\)	`\circ`	\(\circ\)
`\vee, \lor`	\(\vee\)	`\wedge, \land`	\(\wedge\)	`\bullet`	\(\bullet\)
`\oplus`	\(\oplus\)	`\ominus`	\(\ominus\)	`\diamond`	\(\diamond\)
`\odot`	\(\odot\)	`\oslash`	\(\oslash\)	`\uplus`	\(\uplus\)
`\otimes`	\(\otimes\)	`\bigcirc`	\(\bigcirc\)	`\amalg`	\(\amalg\)
`\bigtriangleup`	\(\bigtriangleup\)	`\bigtriangledown`	\(\bigtriangledown\)	`\dagger`	\(\dagger\)
`\lhd`	\(\lhd\)	`\rhd`	\(\rhd\)	`\ddagger`	\(\ddagger\)
`\unlhd`	\(\unlhd\)	`\unrhd`	\(\unrhd\)	`\wr`	\(\wr\)

注: \lhd, \rhd, \unlhd 和 unrhd 需要使用宏包 latexsym

1.2.6 箭头

代码	符号	代码	符号	代码	符号
`\leftarrow or \gets`	\(\leftarrow\)	`\longleftarrow`	\(\longleftarrow\)	`\uparrow`	\(\uparrow\)
`\rightarrow or \to`	\(\rightarrow\)	`\longrightarrow`	\(\longrightarrow\)	`\downarrow`	\(\downarrow\)
`\leftrightarrow`	\(\leftrightarrow\)	`\longleftrightarrow`	\(\longleftrightarrow\)	`\updownarrow`	\(\updownarrow\)
`Leftarrow`	\(\Leftarrow\)	`\Longleftarrow`	\(\Longleftarrow\)	`\Uparrow`	\(\Uparrow\)
`Rightarrow`	\(\Rightarrow\)	`\Longrightarrow`	\(\Longrightarrow\)	`\Downarrow`	\(\Downarrow\)
`Leftrightarrow`	\(\Leftrightarrow\)	`\Longleftrightarrow`	\(\Longleftrightarrow\)	`\Updownarrow`	\(\Updownarrow\)
`mapsto`	\(\mapsto\)	`\longmapsto`	\(\longmapsto\)	`\nearrow`	\(\nearrow\)
`hookleftarrow`	\(\hookleftarrow\)	`\hookrightarrow`	\(\hookrightarrow\)	`\searrow`	\(\searrow\)
`leftharpoonup`	\(\leftharpoonup\)	`\rightharpoonup`	\(\rightharpoonup\)	`\swarrow`	\(\swarrow\)
`leftharpoondown`	\(\leftharpoondown\)	`\rightharpoondown`	\(\rightharpoondown\)	`\nwarrow`	\(\nwarrow\)
`rightleftharpoons`	\(\rightleftharpoons\)	`\iff (bigger spaces))`	\(\iff\)	`\leadsto`	\(\leadsto\)

注: \leadsto 需要使用宏包 latexsym

1.2.7 定界符

代码	符号	代码	符号	代码	符号	代码	符号
`(`	\((\)	`)`	\()\)	`\uparrow`	\(\uparrow\)	`\Uparrow`	\(\Uparrow\)
`[ or \lbrack`	\([\)	`] or \rbrack`	\(]\)	`\downarrow`	\(\downarrow\)	`\Downarrow`	\(\Downarrow\)
`\{ or \lbrace`	\(\lbrace\)	`\} or \rbrace`	\(\rbrace\)	`\updownarrow`	\(\updownarrow\)	`\Updownarrow`	\(\Updownarrow\)
`\langle`	\(\langle\)	`\rangle`	\(\rangle\)	`\| or \vert`	\(\vert\)	`\\| or \Vert`	\(\Vert\)
`\lfloor`	\(\lfloor\)	`\rfloor`	\(\rfloor\)	`\lceil`	\(\lceil\)	`\rceil`	\(\rceil\)
`/`	\(/\)	`\backslash`	\(\backslash\)

1.2.3 数学字母

例子	命令	所需宏包
\(\mathrm{ABCdef}\)	`\mathrm{ABCdef}`
\(\mathit{ABCdef}\)	`\mathit{ABCdef}`
\(ABCdef\)	`\mathnormal{ABCdef}`
\(\mathcal{ABC}\)	`\mathcal{ABC}`
\(\mathscr{ABC}\)	`\mathscr{ABC}`	`mathscr`
\(\mathfrak{ABCdef}\)	`\mathfrak{ABCdef}`	`eufrak`
\(\mathbb{ABC}\)	`\mathbb{ABC}`	`amsfonts or amssymb`

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