1.操作符
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
±± |
\pm |
∓∓ |
\mp |
×× |
\times |
÷÷ |
\div |
⋅⋅ |
\cdot |
∗∗ |
\ast |
⋆⋆ |
\star |
†† |
\dagger |
‡‡ |
\ddagger |
⨿⨿ |
\amalg |
∩∩ |
\cap |
∪∪ |
\cup |
⊎⊎ |
\uplus |
⊓⊓ |
\sqcap |
⊔⊔ |
\sqcup |
∨∨ |
\vee |
∧∧ |
\wedge |
⊕⊕ |
\oplus |
⊖⊖ |
\ominus |
⊗⊗ |
\otimes |
∘∘ |
\circ |
∙∙ |
\bullet |
⋄⋄ |
\diamond |
⊲⊲ |
\lhd |
⊳⊳ |
\rhd |
⊴⊴ |
\unlhd |
⊵⊵ |
\unrhd |
⊘⊘ |
\oslash |
⊙⊙ |
\odot |
◯◯ |
\bigcirc |
◃◃ |
\triangleleft |
◊◊ |
\Diamond |
△△ |
\bigtriangleup |
▽▽ |
\bigtriangledown |
□□ |
\Box |
▹▹ |
\triangleright |
$\setminus $ |
\setminus |
≀≀ |
\wr |
x−−√x |
\sqrt{x} |
x∘x∘ |
x^{\circ} |
▽▽ |
\triangledown |
x−−√nnx |
\sqrt[n]{x} |
axax |
a^x |
axyzaxyz |
a^{xyz} |
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2.关系符
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
≤≤ |
\le |
≥≥ |
\ge |
≠̸= |
\neq |
∼∼ |
\sim |
≪≪ |
\ll |
≫≫ |
\gg |
≐≐ |
\doteq |
≃≃ |
\simeq |
⊂⊂ |
\subset |
⊃⊃ |
\supset |
≈≈ |
\approx |
≍≍ |
\asymp |
⊆⊆ |
\subseteq |
⊇⊇ |
\supseteq |
≅≅ |
\cong |
⌣⌣ |
\smile |
⊏⊏ |
\sqsubset |
⊐⊐ |
\sqsupset |
≡≡ |
\equiv |
⌢⌢ |
\frown |
⊑⊑ |
\sqsubseteq |
⊒⊒ |
\sqsupseteq |
∝∝ |
\propto |
⋈⋈ |
\bowtie |
∈∈ |
\in |
∋∋ |
\ni |
≺≺ |
\prec |
≻≻ |
\succ |
⊢⊢ |
\vdash |
⊣⊣ |
\dashv |
⪯⪯ |
\preceq |
⪰⪰ |
\succeq |
⊨⊨ |
\models |
⊥⊥ |
\perp |
∥∥ |
\parallel |
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∣∣ |
\mid |
≏≏ |
\bumpeq |
\ |
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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 |
≰≰ |
\nleq |
≱≱ |
\ngeq |
≁≁ |
\nsim |
≆≆ |
\ncong |
∦∦ |
\nparallel |
̸ ≮< |
\not< |
̸ ≯> |
\not> |
̸ ≠= |
\not= or \neq |
̸ ≰≤ |
\not\le |
̸ ≱≥ |
\not\ge |
̸ ≁∼ |
\not\sim |
̸ ≉≈ |
\not\approx |
̸ ≇≅ |
\not\cong |
̸ ≢≡ |
\not\equiv |
̸ ∦∥ |
\not\parallel |
≮≮ |
\nless |
≯≯ |
\ngtr |
⪇⪇ |
\lneq |
⪈⪈ |
\gneq |
⋦⋦ |
\lnsim |
≨≨ |
\lneqq |
≩≩ |
\gneqq |
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3.希腊字母
小写
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
αα |
\alpha |
ββ |
\beta |
γγ |
\gamma |
δδ |
\delta |
ϵϵ |
\epsilon |
εε |
\varepsilon |
ζζ |
\zeta |
ηη |
\eta |
θθ |
\theta |
ϑϑ |
\vartheta |
ιι |
\iota |
κκ |
\kappa |
λλ |
\lambda |
μμ |
\mu |
νν |
\nu |
ξξ |
\xi |
ππ |
\pi |
ϖϖ |
\varpi |
ρρ |
\rho |
ϱϱ |
\varrho |
σσ |
\sigma |
ςς |
\varsigma |
ττ |
\tau |
υυ |
\upsilon |
ϕϕ |
\phi |
φφ |
\varphi |
χχ |
\chi |
ψψ |
\psi |
ωω |
\omega |
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大写
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
ΓΓ |
\Gamma |
ΔΔ |
\Delta |
ΘΘ |
\Theta |
ΛΛ |
\Lambda |
ΞΞ |
\Xi |
ΠΠ |
\Pi |
ΣΣ |
\Sigma |
ΥΥ |
\Upsilon |
ΦΦ |
\Phi |
ΨΨ |
\Psi |
ΩΩ |
\Omega |
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加粗
在公式中的字母加粗:
$ \bold m $ 效果:mm
4.箭头
Symbol |
Command |
Symbol |
Command |
←← |
\gets |
→→ |
\to |
←← |
\leftarrow |
⇐⇐ |
\Leftarrow |
→→ |
\rightarrow |
⇒⇒ |
\Rightarrow |
↔↔ |
\leftrightarrow |
⇔⇔ |
\Leftrightarrow |
↦↦ |
\mapsto |
↩↩ |
\hookleftarrow |
↼↼ |
\leftharpoonup |
↽↽ |
\leftharpoondown |
⇌⇌ |
\rightleftharpoons |
⟵⟵ |
\longleftarrow |
⟸⟸ |
\Longleftarrow |
⟶⟶ |
\longrightarrow |
⟹⟹ |
\Longrightarrow |
⟷⟷ |
\longleftrightarrow |
⟺⟺ |
\Longleftrightarrow |
⟼⟼ |
\longmapsto |
↪↪ |
\hookrightarrow |
⇀⇀ |
\rightharpoonup |
⇁⇁ |
\rightharpoondown |
⇝⇝ |
\leadsto |
↑↑ |
\uparrow |
⇑⇑ |
\Uparrow |
↓↓ |
\downarrow |
⇓⇓ |
\Downarrow |
↕↕ |
\updownarrow |
⇕⇕ |
\Updownarrow |
↗↗ |
\nearrow |
↘↘ |
\searrow |
↙↙ |
\swarrow |
↖↖ |
\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 |
⋮⋮ |
\vdots |
…… |
\dots |
⋱⋱ |
\ddots |
⋯⋯ |
\cdots |
KaTeX parse error: Expected 'EOF', got '\iddots' at position 1: \̲i̲d̲d̲o̲t̲s̲ |
\iddots |
6.上标
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
xˆx^ |
\hat{x} |
xˇxˇ |
\check{x} |
x˙x˙ |
\dot{x} |
x˘x˘ |
\breve{x} |
xˊxˊ |
\acute{x} |
x¨x¨ |
\ddot{x} |
xˋxˋ |
\grave{x} |
x˜x~ |
\tilde{x} |
x˚x˚ |
\mathring{x} |
x¯xˉ |
\bar{x} |
x⃗ x |
\vec{x} |
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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 |
ȷ⃗ ȷ |
\vec{\jmath} |
ı˜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+xˆ7+x |
\widehat{7+x} |
abc˜abc |
\widetilde{abc} |
7.其他
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
∞∞ |
\infty |
△△ |
\triangle |
∠∠ |
\angle |
ℵℵ |
\aleph |
ℏℏ |
\hbar |
ıı |
\imath |
ȷȷ |
\jmath |
ℓℓ |
\ell |
℘℘ |
\wp |
Rℜ |
\Re |
Iℑ |
\Im |
℧℧ |
\mho |
'′ |
\prime |
∅∅ |
\emptyset |
∇∇ |
\nabla |
√√ |
\surd |
∂∂ |
\partial |
⊤⊤ |
\top |
⊥⊥ |
\bot |
⊢⊢ |
\vdash |
⊣⊣ |
\dashv |
∀∀ |
\forall |
∃∃ |
\exists |
¬¬ |
\neg |
♭♭ |
\flat |
♮♮ |
\natural |
♯♯ |
\sharp |
\\ |
\backslash |
□□ |
\Box |
◊◊ |
\Diamond |
♣♣ |
\clubsuit |
♢♢ |
\diamondsuit |
♡♡ |
\heartsuit |
♠♠ |
\spadesuit |
⋈⋈ |
\Join |
■■ |
\blacksquare |
✓✓ |
\checkmark |
RR |
\mathbb{R} |
©c◯ |
\copyright |
££ |
\pounds |
□□ |
\square |
∪∪ |
\cup |
★★ |
\bigstar |
∈∈ |
\in |
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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 |
&& |
\& |
%% |
\% |
## |
\# |
__ |
\_ |
{{ |
\{ |
}} |
\} |
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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
(\frac{a}{x} )^2
得到的表达式的括号的大小不对
(ax)2(xa)2
如果我们把\left和\right放在相关的括号前,我们会得到一个更漂亮的表达式:
\left(\frac{a}{x} \right)^2 会得到
(ax)2(xa)2
9.跨行或跨列的符号:
symbol |
command |
{x+y=32x+y=5{x+y=32x+y=5 |
\left{ x+y=3\2x+y=5 \right. |
⌈xy⌉⌈yx⌉ |
\left\lceil\frac{x}{y}\right\rceil |
⌊xy⌋⌊yx⌋ |
\left\lfloor\frac{x}{y}\right\rfloor |
a0+a1+a2+⋯+an└┘−−−−−−−−−−−−−−−−−xxa0+a1+a2+⋯+an |
\underbrace{a_0+a_1+a_2+\cdots+a_n}_{x} |
a0+a1+a2+⋯+anxa0+a1+a2+⋯+anx |
\overbrace{a_0+a_1+a_2+\cdots+a_n}^{x} |
\left和\right也可以用来调整下列符号的大小:
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
↑↑ |
\uparrow |
↓↓ |
\downarrow |
↕↕ |
\updownarrow |
⇑⇑ |
\Uparrow |
⇓⇓ |
\Downarrow |
⇕⇕ |
\Updownarrow |
Symbol |
Command |
Symbol |
Command |
Symbol |
Command |
∑∑ |
\sum |
∫∫ |
\int |
∮∮ |
\oint |
∏∏ |
\prod |
∐∐ |
\coprod |
⋂⋂ |
\bigcap |
⋃⋃ |
\bigcup |
⨆⨆ |
\bigsqcup |
⋁⋁ |
\bigvee |
⋀⋀ |
\bigwedge |
⨀⨀ |
\bigodot |
⨂⨂ |
\bigotimes |
⨁⨁ |
\bigoplus |
⨄⨄ |
\biguplus |
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