摘要: 本文记录常用的 LaTeX 符号,在写文章的时候可以直接复制粘贴使用。
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带帽
带帽形式 |
显示 |
\hat{a} |
ˆa |
\check{a} |
ˇa |
\tilde{a} |
˜a |
\grave{a} |
ˊa |
\dot{a} |
˙a |
\ddot{a} |
¨a |
\bar{a} |
ˉa |
\vec{a} |
→a |
\widehat{a} |
ˆa |
\acute{a} |
ˊa |
\breve{a} |
˘a |
\widetilde{a} |
˜a |
\overset{\frown}{AB} |
⌢AB |
希腊字母
希腊字母 |
显示 |
大写希腊字母 |
显示 |
\alpha |
α |
A |
A |
\beta |
β |
B |
B |
\gamma |
γ |
\Gamma |
Γ |
\delta |
δ |
\Delta |
Δ |
\epsilon |
ϵ |
E |
E |
\varepsilon |
ε |
\zeta |
ζ |
Z |
Z |
\eta |
η |
H |
H |
\theta |
θ |
\Theta |
Θ |
\vartheta |
ϑ |
\iota |
ι |
I |
I |
\kappa |
κ |
K |
K |
\lambda |
λ |
\Lambda |
Λ |
\mu |
μ |
M |
M |
\nu |
ν |
N |
N |
\xi |
ξ |
\Xi |
Ξ |
\omicron |
ο |
O |
O |
\pi |
π |
\Pi |
Π |
\varpi |
ϖ |
\rho |
ρ |
P |
P |
\varrho |
ϱ |
\sigma |
σ |
\Simga |
Σ |
\varsigma |
ς |
\tau |
τ |
T |
T |
\upsilon |
υ |
\Upsilon |
Υ |
\phi |
ϕ |
\Phi |
Φ |
\chi |
χ |
X |
X |
\psi |
ψ |
\Psi |
Ψ |
\omega |
ω |
\Omega |
Σ |
二元关系
二元关系 |
显示 |
否定形式 |
显示 |
< |
< |
\not< |
≮ |
> |
> |
\not> |
≯ |
= |
= |
\not= 或 \neq 或 \ne |
≠ |
\leq 或 \le |
≤ |
\not\leq 或 \not\le |
≰ |
\geq 或 \ge |
≥ |
\notgeq 或 \not\ge |
≱ |
\equiv |
≡ |
\not\equiv |
≢ |
\ll |
≪ |
\not\ll |
≪̸ |
\gg |
≫ |
\not\gg |
≫̸ |
\doteq |
≐ |
\not\doteq |
≐̸ |
\prec |
≺ |
\not\prec |
⊀ |
\succ |
≻ |
\not\succ |
⊁ |
\sim |
∼ |
\not\sim |
≁ |
\preceq |
⪯ |
\not\preceq |
⪯̸ |
\succeq |
⪰ |
\not\succeq |
⪰̸ |
\simeq |
≃ |
\not\simeq |
≄ |
\subset |
⊂ |
\not\subset |
⊄ |
\supset |
⊃ |
\not\supset |
⊅ |
\approx |
≈ |
\not\approx |
≉ |
\subseteq |
⊆ |
\not\subseteq |
⊈ |
\supseteq |
⊇ |
\not\supseteq |
⊉ |
\cong |
≅ |
\not\cong |
≇ |
\sqsubset |
⊏ |
\not\sqsubset |
⊏̸ |
\sqsupset |
⊐ |
\not\sqsupset |
⊐̸ |
\Join |
⋈ |
\not\Join |
⋈̸ |
\sqsubseteq |
⊑ |
\not\sqsubseteq |
⋢ |
\sqsupseteq |
⊒ |
\not\sqsupseteq |
⋣ |
\bowtie |
⋈ |
\not\bowtie |
⋈̸ |
\in |
∈ |
\not\in |
∉ |
\ni 或 \owns |
∋ |
\not\ni 或 \not\owns |
∌ |
\propto |
∝ |
\not\propto |
∝̸ |
\vdash |
⊢ |
\not\vdash |
⊬ |
\dashv |
⊣ |
\not\dashv |
⊣̸ |
\models |
⊨ |
\not\models |
⊭ |
\mid |
∣ |
\not\mid |
∤ |
\parallel |
∥ |
\not\parallel |
∦ |
\perp |
⊥ |
\not\perp |
⊥̸ |
\smile |
⌣ |
\not\smile |
⌣̸ |
\frown |
⌢ |
\not\frown |
⌢̸ |
\asymp |
≍ |
\not\asymp |
≭ |
二元运算符
二元运算符 |
显示 |
+ |
+ |
- |
- |
\pm |
± |
\mp |
∓ |
\triangleleft |
◃ |
\triangleright |
▹ |
\times |
× |
\setminus |
∖ |
\star |
⋆ |
\cup |
∪ |
\cap |
∩ |
\ast |
∗ |
\sqcup |
⊔ |
\sqcap |
⊓ |
\circ |
∘ |
\vee 或 \lor |
∨ |
\wedge 或 \land |
∧ |
\bullet |
∙ |
\oplus |
⊕ |
\ominus |
⊖ |
\diamond |
⋄ |
\odot |
⊙ |
\oslash |
⊘ |
\uplus |
⊎ |
\otimes |
⊗ |
\bigcirc |
◯ |
\amalg |
⨿ |
\bigtriangleup |
△ |
\bigtriangledown |
▽ |
\lhd |
⊲ |
\rhd |
⊳ |
\unlhd |
⊴ |
\unrhd |
⊵ |
\dagger |
† |
\ddagger |
‡ |
\wr |
≀ |
大运算符
大运算符 |
显示 |
\sum |
∑ |
\bigcup |
⋃ |
\bigcap |
⋂ |
\bigvee |
⋁ |
\bigwedge |
⋀ |
\prod |
∏ |
\coprod |
∐ |
\bigsqcup |
⨆ |
\biguplus |
⨄ |
\int |
∫ |
\oint |
∮ |
\bigodot |
⨀ |
\bigoplus |
⨁ |
\bigotimes |
⨂ |
括号
注意,以下左边一列是多行公式的情况,如果是单行公式,\{
和 \}
要改为 \\{
和 \\}
。
括号形式 |
显示 |
(\frac{b}{a}) |
(ba) |
\left(\frac{b}{a}\right) |
(ba) |
\left[\frac{b}{a}\right] |
[ba] |
\left{\frac{b}{a}\right} |
{ba} |
\left\langle\frac{b}{a}\right\rangle |
⟨ba⟩ |
\left|\frac{b}{a}\right| |
|ba| |
\left\|\frac{b}{a}\right\| |
‖ba‖ |
\left\lfloor\frac{b}{a}\right\rfloor |
⌊ba⌋ |
\left\lceil\frac{b}{a}\right\rceil |
⌈ba⌉ |
\left/\frac{b}{a}\right\backslash |
/ba\ |
\left\uparrow\frac{b}{a}\right\downarrow |
↑ba↓ |
\left\Uparrow\frac{b}{a}\right\Downarrow |
⇑ba⇓ |
\left[\frac{b}{a}\right) |
[ba) |
\left\langle\frac{b}{a}\right| |
⟨ba| |
\left{\frac{b}{a}\right. |
{ba |
\left.\frac{b}{a}\right} |
ba} |
括号大小 |
显示 |
\big(\frac{b}{a}\big) |
(ba) |
\Big(\frac{b}{a}\Big) |
(ba) |
\bigg(\frac{b}{a}\bigg) |
(ba) |
\Bigg(\frac{b}{a}\Bigg) |
(ba) |
大定界符
大定界符 |
显示 |
\lgroup |
⟮ |
\rgroup |
⟯ |
\lmoustache |
⎰ |
\arrowvert |
⏐ |
\Arrowvert |
‖ |
\bracevert |
⎪ |
\rmoustache |
⎱ |
范数
范数 |
显示 |
\Vert\mathbf{x}\Vert |
‖x‖ |
\left\|\mathbf{x}\right\| |
‖x‖ |
\big\|\mathbf{x}\big\| |
‖x‖ |
\Big\|\mathbf{x}\Big\| |
‖x‖ |
\bigg\|\mathbf{x}\bigg\| |
‖x‖ |
\Bigg\|\mathbf{x}\Bigg\| |
‖x‖ |
数学字体字母
数学字母 |
显示 |
\mathrm{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathbf{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathbb{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathcal{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathscr{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathfrak{ABCDEabcde12345} |
ABCDEabcde12345 |
\mathit{ABCDEabcde12345} |
ABCDEabcde12345 |
其它符号
其它符号 |
显示 |
\dots |
… |
\cdots |
⋯ |
\vdots |
⋮ |
\ddots |
⋱ |
\hbar |
ℏ |
\imath |
ı |
\jmath |
ȷ |
\ell |
ℓ |
\Re |
ℜ |
\Im |
ℑ |
\aleph |
ℵ |
\wp |
℘ |
\forall |
∀ |
\exists |
∃ |
\mho |
℧ |
\partial |
∂ |
‘ |
′ |
\prime |
′ |
\emptyset |
∅ |
\infty |
∞ |
\nabla |
∇ |
\triangle |
△ |
\Box |
◻ |
\Diamond |
◊ |
\bot |
⊥ |
\top |
⊤ |
\angle |
∠ |
\surd |
√ |
\diamondsuit |
♢ |
\heartsuit |
♡ |
\clubsuit |
♣ |
\spadesuit |
♠ |
\neg 或 \lnot |
¬ |
\flat |
♭ |
\natural |
♮ |
\sharp |
♯ |
\S |
§ |
\% |
% |
\$ |
$ |
箭头
箭头 |
效果 |
\uparrow |
↑ |
\downarrow |
↓ |
\Uparrow |
⇑ |
\Downarrow |
⇓ |
\updownarrow |
↕ |
\Updownarrow |
⇕ |
\rightarrow |
→ |
\leftarrow |
← |
\Rightarrow |
⇒ |
\Leftarrow |
⇐ |
\leftrightarrow |
↔ |
\Leftrightarrow |
⇔ |
\longrightarrow |
⟶ |
\longleftarrow |
⟵ |
\Longrightarrow |
⟹ |
\Longleftarrow |
⟸ |
\mapsto |
↦ |
\longmapsto |
⟼ |
\hookleftarrow |
↩ |
\hookrightarrow |
↪ |
\leftharpoonup |
↼ |
\rightharpoonup |
⇀ |
\leftharpoondown |
↽ |
\rightharpoondown |
⇁ |
\rightleftharpoons |
⇌ |
\leadsto |
⇝ |
\nearrow |
↗ |
\searrow |
↘ |
\swarrow |
↙ |
\nwarrow |
↖ |
\nleftarrow |
↚ |
\nrightarrow |
↛ |
\nLeftarrow |
⇍ |
\nRightarrow |
⇏ |
\nleftrightarrow |
↮ |
\nLeftrightarrow |
⇎ |
\dashrightarrow |
⇢ |
\dashleftarrow |
⇠ |
\leftleftarrows |
⇇ |
\leftrightarrows |
⇆ |
\Lleftarrow |
⇚ |
\twoheadleftarrow |
↞ |
\leftarrowtail |
↢ |
\looparrowleft |
↫ |
\leftrightharpoons |
⇋ |
\curvearrowleft |
↶ |
\circlearrowleft |
↺ |
\Lsh |
↰ |
\upharpoonleft |
↿ |
\downharpoonleft |
⇃ |
\upuparrows |
⇈ |
\multimap |
⊸ |
\leftrightsquigarrow |
↭ |
\rightrightarrows |
⇉ |
\rightleftarrows |
⇄ |
\twoheadrightarrow |
↠ |
\rightarrowtail |
↣ |
\looparrowright |
↬ |
\rightleftharpoons |
⇌ |
\curvearrowright |
↷ |
\circlearrowright |
↻ |
\Rsh |
↱ |
\downdownarrows |
⇊ |
\upharpoonright |
↾ |
\downharpoonright |
⇂ |
\rightsquigarrow |
⇝ |
\longleftrightarrow |
⟷ |
\Longleftrightarrow |
⟺ |
\iff |
⟺ |
箭头上方数字
1
| X\stackrel{F}{\longrightarrow}Y
|
XF⟶Y
矩阵
1
| \begin{matrix} 0 & 1 \\ 1 & 0 \end{matrix}
|
0110
1
| \begin{pmatrix} 0 & -i \\ i & 0 \end{pmatrix}
|
(0−ii0)
1
| \begin{bmatrix} 0 & -1 \\ 1 & 0 \end{bmatrix}
|
[0−110]
1
| \begin{Bmatrix} 1 & 0 \\ 0 & -1 \end{Bmatrix}
|
{100−1}
1
| \begin{vmatrix} a & b \\ c & d \end{vmatrix}
|
|abcd|
1
| \begin{Vmatrix} i & 0 \\ 0 & -i \end{Vmatrix}
|
‖i00−i‖
1 2 3 4 5 6 7 8
| \begin{equation} % 开始数学环境 \left( % 左括号 \begin{array}{ccc} % 该矩阵一共3列,每一列都居中放置 a11 & a12 & a13 \\ % 第一行元素 a21 & a22 & a23 \\ % 第二行元素 \end{array} \right) % 右括号 \end{equation}
|
(a11a12a13a21a22a23)
1 2 3 4 5 6 7 8 9 10 11
| \begin{equation} \left[ \begin{array}{cccccc} 1 & 1 & 0 & 0 & \cdots & 0 \\ 1 & 1 & 1 & 0 & \cdots & 0 \\ 0 & 1 & 1 & 1 & \cdots & 0 \\ \vdots & \vdots & \ddots & \ddots & \ddots& \vdots \\ 0 & 0 & 0 & \cdots & 1 & 1 \\ \end{array} \right] \end{equation}
|
[1100⋯01110⋯00111⋯0⋮⋮⋱⋱⋱⋮000⋯11]
大公式
分段函数
1 2 3 4 5 6
| result[i] = \left\{ \begin{array}{**lr**} A[\frac{i}{2}] \quad (i = 2k) \\ B[\frac{i - 1}{2}] \quad (i = 2k + 1) \\ \end{array} \right.
|
result[i]={A[i2](i=2k)B[i−12](i=2k+1)最优化
1 2 3 4 5
| \begin{array}{**ll**} & min & \vec{C}\vec{x} \\ & s.t. & A\vec{x} = \vec{b} \\ & & \vec{x} \geq 0 \\ \end{array}
|
min→C→xs.t.A→x=→b→x≥0多行等号对齐
1 2 3 4
| \begin{aligned} y &= x^{2} + 4x + 4\\ &= (x+2)^{2}\\ \end{aligned}
|
y=x2+4x+4=(x+2)2积分
∬Df(x,y)dxdy
1
| \iiint\limits_{\Omega}f(x,y,z)dxdydz
|
∭Ωf(x,y,z)dxdydz
1
| \oint\limits_{L} f(x, y)dxdy
|
∮Lf(x,y)dxdy
1
| \int\kern{-8pt}\int\limits_{\Sigma} \kern{-23mu} \bigcirc \bf\;B\cdot\mathrm{d}S=0
|
∫∫Σ◯B⋅dS=0横大括号
1
| (x+1)^{m+n+1} = \underbrace{(x+1)(x+1)\cdots(x+1)}_{m+n+1个}
|
(x+1)m+n+1=(x+1)(x+1)⋯(x+1)⏟m+n+1个1
| (x+1)^{m+n+1} = \overbrace{(x+1)(x+1)\cdots(x+1)}^{m+n+1个}
|
(x+1)m+n+1=m+n+1个⏞(x+1)(x+1)⋯(x+1)多行下标
1
| dp[i][j] = 1 + \max\limits_{\substack{k< i,A[k] < A[i]\\l< j , B[l] < B[j]\\A[k] = B[l]}}dp[k][l]
|
dp[i][j]=1+max