LaTeX数学符号大全本篇博文介绍一些常用的 LaTeX 符号 方便使用时查询 文章目录 1 操作符 2 关系符 3 希腊字母小写大写 4 箭头 5 点 6 上标 7 其他 8 命令符 9 跨行或跨列的符号 1 操作符 SymbolComman pm pm mp mp times times div div cdot
1.操作符
Symbol
Command
Symbol
Command
Symbol
Command
± \pm ±
\pm
∓ \mp ∓
\mp
× \times ×
\times
÷ \div ÷
\div
⋅ \cdot ⋅
\cdot
∗ \ast ∗
\ast
⋆ \star ⋆
\star
† \dagger †
\dagger
‡ \ddagger ‡
\ddagger
⨿ \amalg ⨿
\amalg
∩ \cap ∩
\cap
∪ \cup ∪
\cup
⊎ \uplus ⊎
\uplus
⊓ \sqcap ⊓
\sqcap
⊔ \sqcup ⊔
\sqcup
∨ \vee ∨
\vee
∧ \wedge ∧
\wedge
⊕ \oplus ⊕
\oplus
⊖ \ominus ⊖
\ominus
⊗ \otimes ⊗
\otimes
∘ \circ ∘
\circ
∙ \bullet ∙
\bullet
⋄ \diamond ⋄
\diamond
⊲ \lhd ⊲
\lhd
⊳ \rhd ⊳
\rhd
⊴ \unlhd ⊴
\unlhd
⊵ \unrhd ⊵
\unrhd
⊘ \oslash ⊘
\oslash
⊙ \odot ⊙
\odot
◯ \bigcirc ◯
\bigcirc
◃ \triangleleft ◃
\triangleleft
◊ \Diamond ◊
\Diamond
△ \bigtriangleup △
\bigtriangleup
▽ \bigtriangledown ▽
\bigtriangledown
□ \Box □
\Box
▹ \triangleright ▹
\triangleright
$\setminus $
\setminus
≀ \wr ≀
\wr
x \sqrt{x} x
\sqrt{x}
x ∘ x^{\circ} x ∘
x^{\circ}
▽ \triangledown ▽
\triangledown
x n \sqrt[n]{x} n x
\sqrt[n]{x}
a x a^x a x
a^x
a x y z a^{xyz} a x y z
a^{xyz}
2.关系符
Symbol
Command
Symbol
Command
Symbol
Command
≤ \le ≤
\le
≥ \ge ≥
\ge
≠ \neq =
\neq
∼ \sim ∼
\sim
≪ \ll ≪
\ll
≫ \gg ≫
\gg
≐ \doteq ≐
\doteq
≃ \simeq ≃
\simeq
⊂ \subset ⊂
\subset
⊃ \supset ⊃
\supset
≈ \approx ≈
\approx
≍ \asymp ≍
\asymp
⊆ \subseteq ⊆
\subseteq
⊇ \supseteq ⊇
\supseteq
≅ \cong ≅
\cong
⌣ \smile ⌣
\smile
⊏ \sqsubset ⊏
\sqsubset
⊐ \sqsupset ⊐
\sqsupset
≡ \equiv ≡
\equiv
⌢ \frown ⌢
\frown
⊑ \sqsubseteq ⊑
\sqsubseteq
⊒ \sqsupseteq ⊒
\sqsupseteq
∝ \propto ∝
\propto
⋈ \bowtie ⋈
\bowtie
∈ \in ∈
\in
∋ \ni ∋
\ni
≺ \prec ≺
\prec
≻ \succ ≻
\succ
⊢ \vdash ⊢
\vdash
⊣ \dashv ⊣
\dashv
⪯ \preceq ⪯
\preceq
⪰ \succeq ⪰
\succeq
⊨ \models ⊨
\models
⊥ \perp ⊥
\perp
∥ \parallel ∥
\parallel
∣ \mid ∣
\mid
≏ \bumpeq ≏
\bumpeq
\
只要将not放在符号前面或者在 \ 和单词之间插入一个 n ,就可以形成许多这些关系的否定形式,这里有一些例子,加上一些其他的否定,它也适用于许多其他的。
Symbol
Command
Symbol
Command
Symbol
Command
∤ \nmid ∤
\nmid
≰ \nleq ≰
\nleq
≱ \ngeq ≱
\ngeq
≁ \nsim ≁
\nsim
≆ \ncong ≆
\ncong
∦ \nparallel ∦
\nparallel
≮ \not< <
\not<
≯ \not> >
\not>
≠ \not= =
\not= or \neq
≰ \not\le ≤
\not\le
≱ \not\ge ≥
\not\ge
≁ \not\sim ∼
\not\sim
≉ \not \approx ≈
\not\approx
≇ \not\cong ≅
\not\cong
≢ \not\equiv ≡
\not\equiv
∦ \not\parallel ∥
\not\parallel
≮ \nless ≮
\nless
≯ \ngtr ≯
\ngtr
⪇ \lneq ⪇
\lneq
⪈ \gneq ⪈
\gneq
⋦ \lnsim ⋦
\lnsim
≨ \lne ≨
\lne
≩ \gne ≩
\gne
3.希腊字母
小写
Symbol
Command
Symbol
Command
Symbol
Command
Symbol
Command
α \alpha α
\alpha
β \beta β
\beta
γ \gamma γ
\gamma
δ \delta δ
\delta
ϵ \epsilon ϵ
\epsilon
ε \varepsilon ε
\varepsilon
ζ \zeta ζ
\zeta
η \eta η
\eta
θ \theta θ
\theta
ϑ \vartheta ϑ
\vartheta
ι \iota ι
\iota
κ \kappa κ
\kappa
λ \lambda λ
\lambda
μ \mu μ
\mu
ν \nu ν
\nu
ξ \xi ξ
\xi
π \pi π
\pi
ϖ \varpi ϖ
\varpi
ρ \rho ρ
\rho
ϱ \varrho ϱ
\varrho
σ \sigma σ
\sigma
ς \varsigma ς
\varsigma
τ \tau τ
\tau
υ \upsilon υ
\upsilon
ϕ \phi ϕ
\phi
φ \varphi φ
\varphi
χ \chi χ
\chi
ψ \psi ψ
\psi
ω \omega ω
\omega
大写
Symbol
Command
Symbol
Command
Symbol
Command
Symbol
Command
Γ \Gamma Γ
\Gamma
Δ \Delta Δ
\Delta
Θ \Theta Θ
\Theta
Λ \Lambda Λ
\Lambda
Ξ \Xi Ξ
\Xi
Π \Pi Π
\Pi
Σ \Sigma Σ
\Sigma
Υ \Upsilon Υ
\Upsilon
Φ \Phi Φ
\Phi
Ψ \Psi Ψ
\Psi
Ω \Omega Ω
\Omega
∇ \nabla ∇
\nabla
加粗
在公式中的字母加粗:
Symbol
Command
m \bold m m
$ \bold m $
空心字母
Symbol
Command
M \mathbb{M} M
$ \mathbb{M} $
R \mathbb{R} R
$ \mathbb{R} $
4.箭头
Symbol
Command
Symbol
Command
← \gets ←
\gets
→ \to →
\to
← \leftarrow ←
\leftarrow
⇐ \Leftarrow ⇐
\Leftarrow
→ \rightarrow →
\rightarrow
⇒ \Rightarrow ⇒
\Rightarrow
↔ \leftrightarrow ↔
\leftrightarrow
⇔ \Leftrightarrow ⇔
\Leftrightarrow
↦ \mapsto ↦
\mapsto
↩ \hookleftarrow ↩
\hookleftarrow
↼ \leftharpoonup ↼
\leftharpoonup
↽ \leftharpoondown ↽
\leftharpoondown
⇌ \rightleftharpoons ⇌
\rightleftharpoons
⟵ \longleftarrow ⟵
\longleftarrow
⟸ \Longleftarrow ⟸
\Longleftarrow
⟶ \longrightarrow ⟶
\longrightarrow
⟹ \Longrightarrow ⟹
\Longrightarrow
⟷ \longleftrightarrow ⟷
\longleftrightarrow
⟺ \Longleftrightarrow ⟺
\Longleftrightarrow
⟼ \longmapsto ⟼
\longmapsto
↪ \hookrightarrow ↪
\hookrightarrow
⇀ \rightharpoonup ⇀
\rightharpoonup
⇁ \rightharpoondown ⇁
\rightharpoondown
⇝ \leadsto ⇝
\leadsto
↑ \uparrow ↑
\uparrow
⇑ \Uparrow ⇑
\Uparrow
↓ \downarrow ↓
\downarrow
⇓ \Downarrow ⇓
\Downarrow
↕ \updownarrow ↕
\updownarrow
⇕ \Updownarrow ⇕
\Updownarrow
↗ \nearrow ↗
\nearrow
↘ \searrow ↘
\searrow
↙ \swarrow ↙
\swarrow
↖ \nwarrow ↖
\nwarrow
(对于不喜欢键入长串字母的人,\iff和\implies可以分别替代\Longleftrightarrow和\ longrighttarrow)
5.点
Symbol
Command
Symbol
Command
⋅ \cdot ⋅
\cdot
⋮ \vdots ⋮
\vdots
… \dots …
\dots
⋱ \ddots ⋱
\ddots
⋯ \cdots ⋯
\cdots
KaTeX parse error: Undefined control sequence: \iddots at position 1: \̲i̲d̲d̲o̲t̲s̲
\iddots
6.上标
Symbol
Command
Symbol
Command
Symbol
Command
x ^ \hat{x} x ^
\hat{x}
x ˇ \check{x} x ˇ
\check{x}
x ˙ \dot{x} x ˙
\dot{x}
x ˘ \breve{x} x ˘
\breve{x}
x ˊ \acute{x} x ˊ
\acute{x}
x ¨ \ddot{x} x ¨
\ddot{x}
x ˋ \grave{x} x ˋ
\grave{x}
x ~ \tilde{x} x ~
\tilde{x}
x ˚ \mathring{x} x ˚
\mathring{x}
x ˉ \bar{x} x ˉ
\bar{x}
x ⃗ \vec{x} x
\vec{x}
当对i和j应用上标时,可以使用\imath和\jmath来防止点干扰上标:
Symbol
Command
Symbol
Command
ȷ ⃗ \vec{\jmath} ȷ
\vec{\jmath}
ı ~ \tilde{\imath} ı ~
\tilde{\imath}
\tilde和\hat有很宽的版本,可以让你强调一个表达:
Symbol
Command
Symbol
Command
7 + x ^ \widehat{7+x} 7 + x
\widehat{7+x}
a b c ~ \widetilde{abc} a b c
\widetilde{abc}
7.其他
Symbol
Command
Symbol
Command
Symbol
Command
∞ \infty ∞
\infty
△ \triangle △
\triangle
∠ \angle ∠
\angle
ℵ \aleph ℵ
\aleph
ℏ \hbar ℏ
\hbar
ı \imath ı
\imath
ȷ \jmath ȷ
\jmath
ℓ \ell ℓ
\ell
℘ \wp ℘
\wp
ℜ \Re ℜ
\Re
ℑ \Im ℑ
\Im
℧ \mho ℧
\mho
′ \prime ′
\prime
∅ \emptyset ∅
\emptyset
∇ \nabla ∇
\nabla
√ \surd √
\surd
∂ \partial ∂
\partial
⊤ \top ⊤
\top
⊥ \bot ⊥
\bot
⊢ \vdash ⊢
\vdash
⊣ \dashv ⊣
\dashv
∀ \forall ∀
\forall
∃ \exists ∃
\exists
¬ \neg ¬
\neg
♭ \flat ♭
\flat
♮ \natural ♮
\natural
♯ \sharp ♯
\sharp
\ \backslash \
\backslash
□ \Box □
\Box
◊ \Diamond ◊
\Diamond
♣ \clubsuit ♣
\clubsuit
♢ \diamondsuit ♢
\diamondsuit
♡ \heartsuit ♡
\heartsuit
♠ \spadesuit ♠
\spadesuit
⋈ \Join ⋈
\Join
■ \blacksquare ■
\blacksquare
✓ \checkmark ✓
\checkmark
R \mathbb{R} R
\mathbb{R}
© \copyright c ◯
\copyright
£ \pounds £
\pounds
□ \square □
\square
∪ \cup ∪
\cup
★ \bigstar ★
\bigstar
∈ \in ∈
\in
8.命令符
有些符号用于命令中,因此需要以特殊的方式处理它们。
Symbol
Command
Symbol
Command
Symbol
Command
Symbol
Command
\ \backslash \
\backslash
& \& &
\&
% \% %
\%
# \# #
\#
_ \_ _
\_
{ \{ {
\{
} \} }
\}
您可能会注意到,如果使用其中任何一个来排版垂直较大的表达式,比如
9.跨行或跨列的符号:
symbol
command
{ x + y = 3 2 x + y = 5 \left\{\begin{array}{l}x+y=3\\2x+y=5\end{array}\right. {
x + y = 3 2 x + y = 5
\left{\begin{array}{l}x+y=3\2x+y=5\end{array}\right.
⌈ x y ⌉ \left\lceil\frac{x}{y}\right\rceil ⌈ y x ⌉
\left\lceil\frac{x}{y}\right\rceil
⌊ x y ⌋ \left\lfloor\frac{x}{y}\right\rfloor ⌊ y x ⌋
\left\lfloor\frac{x}{y}\right\rfloor
a 0 + a 1 + a 2 + ⋯ + a n ⏟ x \underbrace{a_0+a_1+a_2+\cdots+a_n}_{x} x
a 0 + a 1 + a 2 + ⋯ + a n
\underbrace{a_0+a_1+a_2+\cdots+a_n}_{x}
a 0 + a 1 + a 2 + ⋯ + a n ⏞ x \overbrace{a_0+a_1+a_2+\cdots+a_n}^{x} a 0 + a 1 + a 2 + ⋯ + a n
x
\overbrace{a_0+a_1+a_2+\cdots+a_n}^{x}
arg m a x 1 ≤ k ≤ n λ k λ k + 1 \arg \underset{1\leq k \leq n} {max} \frac{\lambda_k}{\lambda_{k+1}} arg 1 ≤ k ≤ n ma x λ k + 1 λ k
\arg \underset{1\leq k \leq n} {max} \frac{\lambda_k}{\lambda_{k+1}}
\left和\right也可以用来调整下列符号的大小:
Symbol
Command
Symbol
Command
Symbol
Command
↑ \uparrow ↑
\uparrow
↓ \downarrow ↓
\downarrow
↕ \updownarrow ↕
\updownarrow
⇑ \Uparrow ⇑
\Uparrow
⇓ \Downarrow ⇓
\Downarrow
⇕ \Updownarrow ⇕
\Updownarrow
Symbol
Command
Symbol
Command
Symbol
Command
∑ \sum ∑
\sum
∫ \int ∫
\int
∮ \oint ∮
\oint
∏ \prod ∏
\prod
∐ \coprod ∐
\coprod
⋂ \bigcap ⋂
\bigcap
⋃ \bigcup ⋃
\bigcup
⨆ \bigsqcup ⨆
\bigsqcup
⋁ \bigvee ⋁
\bigvee
⋀ \bigwedge ⋀
\bigwedge
⨀ \bigodot ⨀
\bigodot
⨂ \bigotimes ⨂
\bigotimes
⨁ \bigoplus ⨁
\bigoplus
⨄ \biguplus ⨄
\biguplus
换行符号 ’ \\’ 与空格符号’\quad’
Symbol
Command
a = 1 b = 2 a=1\\b=2 a = 1 b = 2
$ a=1 \\ b=2 $
a b a \uad b a b
$ a \uad b $
a b a \quad b a b
$ a \quad b $
a b a \ b a b
$ a\ b $
a b a \; b a b
$ a; b $
a b a \, b a b
$ a\ b $
a b ab a b
$ ab $
a b a \! b a b
$ a! b $
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