LaTeX 在 Markdown 上的使用说明

例子

语法	结果
a_{1}
x^{2}
e^{-\alpha t}
a^{3}_{ij}
e^{x^2} \neq {e^x}^2
\sqrt{x}
\sqrt{ x^{2} + \sqrt{y} }
\sqrt[3]{2}
\surd[x^2 + y^2]
\overline{m + n}
\underline{m + n}
\underbrace{a + b + \cdots + z}_{26}
\vec{a}
\overrightarrow{AB}
1\frac{1}{2}~hours
\frac{x^2}{k+1}
x^{\frac{2}{k+1}}
x^{1/2}
\sum_{i = 1}^{n}
\int_{0}^{\frac{\pi}{2}}
\prod_\epsilon

数学模式重音符

语法	结果
\acute{a}
\bar{a}
\breve{a}
\check{a}
\ddot{a}
\dot{a}
\grave{a}
\hat{a}
\mathring{a}
\tilde{a}
\vec{a}
\widehat{AAA}
\widetilde{AAA}

希腊字母

语法	结果
\alpha
\beta
\gamma
\delta
\epsilon
\varepsilon
\zeta
\eta
\Gamma
\Delta
\Theta
\theta
\vartheta
\iota
\kappa
\lambda
\mu
\nu
\xi
\Lambda
\Xi
\Pi
o
\pi
\varpi
\rho
\varrho
\sigma
\varsigma
\tau
\Sigma
\Upsilon
\Phi
\upsilon
\phi
\varphi
\chi
\psi
\omega
\Psi
\Omega
\digamma
\varkappa
\beth
\gimel
\daleth

二元关系符

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

二元运算符

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

大尺寸运算符

语法	结果
\sum
\bigcup
\bigvee
\prod
\bigcap
\bigwedge
\coprod
\bigsqcup
\biguplus
\int
\oint
\bigodot
\bigoplus
\bigotimes

箭头

语法	结果
\leftarrow
\gets
\longleftarrow
\rightarrow
\to
\longrightarrow
\leftrightarrow
\longleftrightarrow
\Leftarrow
\Longleftarrow
\Rightarrow
\Longrightarrow
\Leftrightarrow
\Longleftrightarrow
\mapsto
\longmapsto
\hookleftarrow
\hookrightarrow
\leftharpoonup
\rightharpoonup
\leftharpoondown
\rightharpoondown
\rightleftharpoons
\iff
\uparrow
\downarrow
\updownarrow
\Uparrow
\Downarrow
\Updownarrow
\nearrow
\searrow
\swarrow
\nwarrow
\leadsto

Arrows as Accents

语法	结果
\overrightarrow{AB}
\underrightarrow{AB}
\overleftarrow{AB}
\underleftarrow{AB}
\overleftrightarrow{AB}
\underleftrightarrow{AB}

定界符

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

大分隔符

语法	结果
\lgroup
\rgroup
\lmoustache
\arrowvert
\Arrowvert
\bracevert
\rmoustache

Miscellaneous Symbols

语法	结果
\dots
\cdots
\vdots
\ddots
\hbar
\imath
\jmath
\ell
\Re
\Im
\aleph
\wp
\forall
\exists
\mho
\partial
‘
\prime
\emptyset
\infty
\nabla
\triangle
\Box
\Diamond
\bot
\top
\angle
\surd
\diamondsuit
\heartsuit
\clubsuit
\spadesuit
\neg
\lnot
\flat
\natural
\sharp

AMS 定界符

语法	结果
\ulcorner
\urcorner
\llcorner
\lrcorner
\lvert
\rvert
\lVert
\rVert

数学字母

语法	结果
\mathrm{ABCDEabcde1234}
\mathit{ABCDEabcde1234}
\mathcal{ABCDEabcde1234}
\mathscr{ABCDEabcde1234}
\mathfrak{ABCDEabcde1234}
\mathbb{ABCDEabcde1234

AMS 二元运算符

语法	结果
\dotplus
\centerdot
\ltimes
\rtimes
\divideontimes
\doublecup
\doublecap
\smallsetminus
\veebar
\barwedge
\doublebarwedge
\boxplus
\boxminus
\circleddash
\boxtimes
\boxdot
\circledcirc
\intercal
\circledast
\rightthreetimes
\curlyvee
\curlywedge
\leftthreetimes

AMS 二元关系符

语法	结果
\lessdot
\gtrdot
\doteqdot
\leqslant
\geqslant
\risingdotseq
\eqslantless
\eqslantgtr
\fallingdotseq
\leqq
\geqq
\eqcirc
\lll
\llless
\ggg
\circeq
\lesssim
\gtrsim
\triangleq
\lessapprox
\gtrapprox
\bumpeq
\lessgtr
\gtrless
\Bumpeq
\lesseqgtr
\gtreqless
\thicksim
\lesseqqgtr
\gtreqqless
\thickapprox
\preccurlyeq
\succcurlyeq
\approxeq
\curlyeqprec
\curlyeqsucc
\backsim
\precsim
\succsim
\backsimeq
\precapprox
\succapprox
\vDash
\subseteqq
\supseteqq
\Vdash
\shortparallel
\Supset
\Vvdash
\blacktriangleleft
\sqsupset
\backepsilon
\vartriangleright
\because
\varpropto
\blacktriangleright
\Subset
\between
\trianglerighteq
\smallfrown
\pitchfork
\vartriangleleft
\shortmid
\smallsmile
\trianglelefteq
\therefore
\sqsubset

ASM 箭头

语法	结果
\dashleftarrow
\dashrightarrow
\multimap
\leftleftarrows
\rightrightarrows
\upuparrows
\leftrightarrows
\rightleftarrows
\downdownarrows
\Lleftarrow
\Rrightarrow
\upharpoonleft
\twoheadleftarrow
\twoheadrightarrow
\upharpoonright
\leftarrowtail
\rightarrowtail
\downharpoonleft
\leftrightharpoons
\rightleftharpoons
\downharpoonright
\Lsh
\Rsh
\rightsquigarrow
\looparrowleft
\looparrowright
\leftrightsquigarrow
\curvearrowleft
\curvearrowright
\circlearrowleft
\circlearrowright