@

目录

符号

希腊字符

command symbol symbol command symbol command
A \(A\) \({\alpha}\) \alpha
B \(B\) \({\beta}\) \beta
\Gamma \({\Gamma}\) \({\gamma}\) \gamma
\Delta \({\Delta}\) \({\delta}\) \delta
\Omega \({\Omega}\) \({\omega}\) \omega
Z \(Z\) \({\zeta}\) \zeta
H \(H\) \({\eta}\) \eta
I \(I\) \({\iota}\) \iota
K \(K\) \({\kappa}\) \kappa
\Lambda \({\Lambda}\) \({\lambda}\) \lambda
M \(M\) \({\mu}\) \mu
N \(N\) \({\nu}\) \nu
\Xi \({\Xi}\) \({\xi}\) \xi
T \(T\) \({\tau}\) \tau
\Upsilon \({\Upsilon}\) \({\upsilon}\) \upsilon
X \(X\) \({\chi}\) \chi
\Psi \({\Psi}\) \({\psi}\) \psi
E \(E\) \({\epsilon}\) \epsilon \({\varepsilon}\) \varepsilon
\Theta \({\Theta}\) \({\theta}\) \theta \({\vartheta}\) \vartheta
\Pi \({\Pi}\) \({\pi}\) \pi \({\varpi}\) \varpi
P \(P\) \({\rho}\) \rho \({\varrho}\) \varrho
\Sigma \({\Sigma}\) \({\sigma}\) \sigma \({\varsigma}\) \varsigma
\Phi \({\Phi}\) \({\phi}\) \phi \({\varphi}\) \varphi

常用字符

二元运算符

symbol command symbol command symbol command
\(+\) + \(-\) - \({\times}\) \times
\({\div}\) \div \({\pm}\) \pm \({\mp}\) \mp
\({\cap}\) \cap \({\cup}\) \cup \({\lhd}\) \lhd
\({\rhd}\) \rhd \({\cdot}\) \cdot \({\centerdot}\) \centerdot
\({\setminus}\) \setminus \({\ast}\) \ast \({\circledast}\) \circledast
\({\star}\) \star \({\circ}\) \circ \({\bigcirc}\) \bigcirc
\({\circledcirc}\) \circledcirc \({\bullet}\) \bullet \({\diamond}\) \diamond
\({\circleddash}\) \circleddash \({\dotplus}\) \dotplus \({\divideontimes}\) \divideontimes
\({\odot}\) \odot \({\ominus}\) \ominus \({\oplus}\) \oplus
\({\oslash}\) \oslash \({\amalg}\) \amalg \({\wr}\) \wr
\({\Box}\) \Box \({\boxplus}\) \boxplus \({\boxminus}\) \boxminus
\({\boxtimes}\) \boxtimes \({\boxdot}\) \boxdot \({\square}\) \square}
\({\uplus}\) \uplus \({\sqcap}\) \sqcap \({\sqcup}\) \sqcup
\({\wedge}\) \wedge \({\vee}\) \vee \({\triangleleft}\) \triangleleft
\({\triangleright}\) \triangleright \({\unlhd}\) \unlhd \({\unrhd}\) \unrhd
\({\bigtriangledown}\) \bigtriangledown \({\bigtriangleup}\) \bigtriangleup \({\dagger}\) \dagger
\({\ddagger}\) \ddagger \({\barwedge}\) \barwedge \({\veebar}\) \veebar
\({\curlywedge}\) \curlywedge \({\curlyvee}\) \curlyvee \({\Cap}\) \Cap
\({\Cup}\) \Cup \({\bot}\) \bot \({\top}\) \top
\({\intercal}\) \intercal \({\rightthreetimes}\) \rightthreetimes \({\leftthreetimes}\) \leftthreetimes
\({\doublebarwedge}\) \doublebarwedge

分数

symbol command
\({\frac{a}{b}}\) \frac{a}

根式

symbol command symbol command
\({\sqrt{a}}\) \sqrt \(\sqrt[b]{a}\) \sqrt[b]

上下标

symbol command symbol command symbol command
\({a^{b}}\) a^ \({a_{b}}\) a_ \({a_{b}^{c}}\) a_{b}^
  • 上下标只有一个字符的时候也可以不用加‘{}’。

对数

symbol command symbol command symbol command
\({\log_{a}{b}}\) \log_{a} \({\lg{b}}\) \lg \({\ln{b}}\) \ln

导数

symbol command symbol command symbol command
\({f'}\) f' or f^ \({f''}\) f'' \({f'''}\) f'''
\({f^{(n)}}\) f^ \({\dot{a}}\) \dot \({\ddot{a}}\) \ddot

模

symbol command symbol command
\({\pmod{a}}\) \pmod \({{a}\bmod{b}}\) {a}\bmod

三角函数

symbol command symbol command symbol command
\({\sin{a}}\) \sin \({\cos{a}}\) \cos \({\tan{a}}\) \tan
\({\cot{a}}\) \cot \({\sec{a}}\) \sec \({\csc{a}}\) \csc

反三角函数

symbol command symbol command symbol command
\({\sin^{-1}{a}}\) \sin^{-1} \({\cos^{-1}{a}}\) \cos^{-1} \({\tan^{-1}{a}}\) \tan^{-1}
\({\cot^{-1}{a}}\) \cot^{-1} \({\sec^{-1}{a}}\) \sec^{-1} \({\csc^{-1}{a}}\) \csc^{-1}
\({\arcsin{a}}\) \arcsin \({\arccos{a}}\) \arccos \({\arctan{a}}\) \arctan
\({\operatorname{arccot}{a}}\) \operatorname{arccot} \({\operatorname{arcsec}{a}}\) \operatorname{arcsec} \({\operatorname{arccsc}{a}}\) \operatorname{arccsc}

双曲函数

symbol command symbol command symbol command
\({\sinh{a}}\) \sinh \({\cosh{a}}\) \cosh \({\tanh{a}}\) \tanh
\({\coth{a}}\) \coth \({\operatorname{sech}{a}}\) \operatorname{sech} \({\operatorname{csch}{a}}\) \operatorname{csch}

反双曲函数

symbol command symbol command symbol command
\({\sinh^{-1}{a}}\) \sinh^{-1} \({\cosh^{-1}{a}}\) \cosh^{-1} \({\tanh^{-1}{a}}\) \tanh^{-1}
\({\coth^{-1}{a}}\) \coth^{-1} \({\operatorname{sech}^{-1}{a}}\) \operatorname{sech}^{-1} \({\operatorname{csch}^{-1}{a}}\) \operatorname{csch}^{-1}

极限

symbol command symbol command symbol command
\({\lim{a}}\) \lim \({\lim_{{a} \to {b}} {c}}\) \lim_{{a} \to {b}} \({\lim_{{a} \to {\infty}} {b}}\) \lim_{{a} \to {\infty}}

微分

symbol command symbol command symbol command
\({\nabla}\) \nabla \({\mathrm{d}{x}}\) \mathrm{d} \({\partial{x}}\) \partial
\({\frac{\mathrm{d} {y}}{\mathrm{d} {x}}}\) \frac{\mathrm{d} {y}}{\mathrm{d} {x}} \({\frac{\partial {y}}{\partial {x}}}\) \frac{\partial {y}}{\partial {x}} \({\frac{\partial^2}{\partial {x_1} \partial {x_2}} {y}}\) \frac{\partial^2}{\partial {x_1} \partial {x_2}}

积分

symbol command symbol command symbol command
\({\int}\) \int \({\int_{a}^{b}}\) \int_{a}^ \({\int_{a}^{b} e^x \, \mathrm{d}{x}}\) \int_{a}^{b} e^x , \mathrm{d}
\({\int\limits_{a}^{b}}\) \int\limits_{a}^ \({\iint}\) \iint \({\iint_{a}^{b}}\) \iint_{a}^
\({\iint_{a}^{b} e^{xy} \, \mathrm{d}{x} \mathrm{d}{y}}\) \iint_{a}^{b} e^{xy} , \mathrm{d}{x} \mathrm{d} \({\iint\limits_{a}^{b}}\) \iint\limits_{a}^ \({\iiint}\) \iiint
\({\iiint_{a}^{b}}\) \iiint_{a}^ \({\iiint_{a}^{b} e^{xyz} \, \mathrm{d}{x} \mathrm{d}{y} \mathrm{d}{z}}\) \iiint_{a}^{b} e^{xyz} , \mathrm{d}{x} \mathrm{d}{y} \mathrm{d} \({\iiint\limits_{a}^{b}}\) \iiint\limits_{a}^
\({\oint}\) \oint \({\oint_{C} x^{2} \, \mathrm{d}{x} + 4y^{2} \, \mathrm{d}{y}}\) \oint_{C} x^{2} , \mathrm{d}{x} + 4y^{2} , \mathrm{d}

巨算符

symbol command symbol command symbol command
\({\sum}\) \sum \(\sum_{a}^{b}\) \sum_{a}^ \({\begin{matrix} \sum_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \sum_{a}^{b} {c} \end
\({\prod}\) \prod \({\prod_{a}^{b}}\) \prod_{a}^ \({\begin{matrix} \prod_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \prod_{a}^{b} {c} \end
\({\coprod}\) \coprod \({\coprod_{a}^{b}}\) \coprod_{a}^ \({\begin{matrix} \coprod_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \coprod_{a}^{b} {c} \end
\({\bigcup}\) \bigcup \({\bigcup_{a}^{b}}\) \bigcup_{a}^ \({\begin{matrix} \bigcup_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \bigcup_{a}^{b} {c} \end
\({\bigcap}\) \bigcap \({\bigcap_{a}^{b}}\) \bigcap_{a}^ \({\begin{matrix} \bigcap_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \bigcap_{a}^{b} {c} \end
\({\bigvee}\) \bigvee \({\bigvee_{a}^{b}}\) \bigvee_{a}^ \({\begin{matrix} \bigvee_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \bigvee_{a}^{b} {c} \end
\({\bigwedge}\) \bigwedge \({\bigwedge_{a}^{b}}\) \bigwedge_{a}^ \({\begin{matrix} \bigwedge_{a}^{b} {c} \end{matrix}}\) \begin{matrix} \bigwedge_{a}^{b} {c} \end

集合

symbol command symbol command symbol command
\({\forall}\) \forall \({\exists}\) \exists \({\nexists}\) \nexists
\({\emptyset}\) \emptyset \({\varnothing}\) \varnothing \({\in}\) \in
\({\not\in}\) \not\in \({\ni}\) \ni \({\not\ni}\) \not\ni
\({\subset}\) \subset \({\subseteq}\) \subseteq \({\supset}\) \supset
\({\supseteq}\) \supseteq \({\cap}\) \cap \({\bigcap}\) \bigcap
\({\cup}\) \cup \({\bigcup}\) \bigcup \({\biguplus}\) \biguplus
\({\sqsubset}\) \sqsubset \({\sqsubseteq}\) \sqsubseteq \({\sqsupset}\) \sqsupset
\({\sqsupseteq}\) \sqsupseteq \({\sqcap}\) \sqcap \({\sqcup}\) \sqcup
\({\bigsqcup}\) \bigsqcup \({\bigoplus}\) \bigoplus \({\bigodot}\) \bigodot

逻辑

symbol command symbol command symbol command
\({\wedge}\) \wedge \({\bigwedge}\) \bigwedge \({\lor}\) \lor
\({\bigvee}\) \bigvee \({\neg}\) \neg \({\setminus}\) \setminus
\({\smallsetminus}\) \smallsetminus

关系符

常用关系符

symbol command symbol command symbol command
\(<\) < \(>\) > \(=\) =
\({\ne}\) \ne \({\le}\) \le \({\ge}\) \ge
\({\approx}\) \approx \({\not \approx}\) \not \approx \({\sim}\) \sim
\({\simeq}\) \simeq \({\cong}\) \cong \({\equiv}\) \equiv
\({\not \equiv}\) \not \equiv \({\gg}\) \gg \({\ll}\) \ll
\({\ggg}\) \ggg \({\geqq}\) \geqq \({\leqq}\) \leqq
\({\propto}\) \propto \({\triangleq}\) \triangleq \({\forall}\) \forall
\({\exists}\) \exists \({\emptyset}\) \emptyset \({\varnothing}\) \varnothing
\({\in}\) \in \({\ni}\) \ni \({\notin}\) \notin
\({\not \ni}\) \not \ni \({\subset}\) \subset \({\subseteq}\) \subseteq
\({\supset}\) \supset \({\supseteq}\) \supseteq \({\cup}\) \cup
\({\cap}\) \cap \({\land}\) \land \({\vee}\) \vee

不常用关系符

symbol command symbol command symbol command
\({\prec}\) \prec \({\succ}\) \succ \({\preceq}\) \preceq
\({\succeq}\) \succeq \({\perp}\) \perp \({\mid}\) \mid
\({\parallel}\) \parallel \({\dashv}\) \dashv \({\vdash}\) \vdash
\({\asymp}\) \asymp \({\doteq}\) \doteq \({\models}\) \models
\({\bowtie}\) \bowtie \({\ltimes}\) \ltimes \({\smile}\) \smile
\({\frown}\) \frown \({\approxeq}\) \approxeq \({\backsim}\) \backsim
\({\backsimeq}\) \backsimeq \({\circeq}\) {\circeq \({\bumpeq}\) \bumpeq
\({\Bumpeq}\) \Bumpeq \({\doteqdot}\) \doteqdot \({\fallingdotseq}\) \fallingdotseq
\({\risingdotseq}\) \risingdotseq \({\varpropto}\) \varpropto \({\therefore}\) \therefore
\({\because}\) \because \({\eqcirc}\) \eqcirc \({\lesssim}\) \lesssim
\({\gtrsim}\) \gtrsim \({\lessapprox}\) \lessapprox \({\gtrapprox}\) \gtrapprox
\({\lessdot}\) \lessdot \({\gtrdot}\) \gtrdot \({\eqslantless}\) \eqslantless
\({\eqslantgtr}\) \eqslantgtr \({\precsim}\) \precsim \({\succsim}\) \succsim
\({\precapprox}\) \precapprox \({\succapprox}\) \succapprox \({\Subset}\) \Subset
\({\Supset}\) \Supset \({\subseteqq}\) \subseteqq \({\supseteqq}\) \supseteqq
\({\preccurlyeq}\) \preccurlyeq \({\succcurlyeq}\) \succcurlyeq \({\curlyeqprec}\) \curlyeqprec
\({\curlyeqsucc}\) \curlyeqsucc \({\blacktriangleleft}\) \blacktriangleleft \({\blacktriangleright}\) \blacktriangleright
\({\blacktriangle}\) \blacktriangle \({\blacktriangledown}\) \blacktriangledown \({\trianglelefteq}\) \trianglelefteq
\({\trianglerighteq}\) \trianglerighteq \({\vartriangleleft}\) \vartriangleleft \({\vartriangleright}\) \vartriangleright
\({\lessgtr}\) \lessgtr \({\gtrless}\) \gtrless \({\lesseqgtr}\) \lesseqgtr
\({\gtreqless}\) \gtreqless \({\lesseqqgtr}\) \lesseqqgtr \({\gtreqqless}\) \gtreqqless
\({\backepsilon}\) \backepsilon \({\between}\) \between \({\pitchfork}\) \pitchfork
\({\shortmid}\) \shortmid \({\smallfrown}\) \smallfrown \({\smallsmile}\) \smallsmile
\({\Vdash}\) \Vdash \({\vDash}\) \vDash} \({\Vvdash}\) \Vvdash
\({\shortparallel}\) \shortparallel \({\nshortparallel}\) \nshortparallel $$
  • 关系符加\not前缀等于关系符的否定形式。

括号

常用括号

symbol command symbol command symbol command
\({\left( {\frac{a}{b}} \right) }\) \left( {\frac{a}{b}} \right) \({\left [ {\frac{a}{b}} \right ]}\) \left [ {\frac{a}{b}} \right ] \({\left \langle {\frac{a}{b}} \right \rangle}\) \left \langle {\frac{a}{b}} \right \rangle
\({\left \{ {\frac{a}{b}} \right \}}\) \left { {\frac{a}{b}} \right } ${\left {\frac{a}{b}} \right }$ \left | {\frac{a}{b}} \right |
\({\left \lfloor {\frac{a}{b}} \right \rfloor}\) \left \lfloor {\frac{a}{b}} \right \rfloor \({\left \lceil {\frac{a}{b}} \right \rceil}\) \left \lceil {\frac{a}{b}} \right \rceil \({\left / {\frac{a}{b}} \right \backslash}\) \left / {\frac{a}{b}} \right \backslash
\({\left \uparrow {\frac{a}{b}} \right \downarrow}\) \left \uparrow {\frac{a}{b}} \right \downarrow \({\left \Uparrow {\frac{a}{b}} \right \Downarrow}\) \left \Uparrow {\frac{a}{b}} \right \Downarrow \({\left [ {-\frac{a}{b},\frac{a}{b}} \right )}\) \left [ {-\frac{a}{b},\frac{a}{b}} \right )
\({\left \{ {\frac{a}{b}} \right.}\) \left { {\frac{a}{b}} \right. \({\left. {\frac{a}{b}} \right \}}\) \left. {\frac{a}{b}} \right } \({\llcorner}\) \llcorner
\({\lrcorner}\) \lrcorner \({\ulcorner}\) \ulcorner \({\urcorner}\) \urcorner

大定界符

symbol command symbol command symbol command
\({\lgroup}\) \lgroup \({\rgroup}\) \rgroup \({\lmoustache}\) \lmoustache
\({\rmoustache}\) \rmoustache \({\arrowvert}\) \arrowvert \({\Arrowvert}\) \Arrowvert
\({\bracevert}\) \bracevert

箭头

常用箭头

symbol command symbol command symbol command
\({\leftarrow}\) \leftarrow \({\rightarrow}\) \rightarrow \({\longleftarrow}\) \longleftarrow
\({\longrightarrow}\) \longrightarrow \({\leftrightarrow}\) \leftrightarrow \({\longleftrightarrow}\) \longleftrightarrow
\({\Leftarrow}\) \Leftarrow \({\Rightarrow}\) \Rightarrow \({\Longleftarrow}\) \Longleftarrow
\({\Longrightarrow}\) \Longrightarrow \({\Leftrightarrow}\) \Leftrightarrow \({\Longleftrightarrow}\) \Longleftrightarrow
\({\rightleftharpoons}\) \rightleftharpoons \({\mapsto}\) \mapsto \({\longmapsto}\) \longmapsto
\({\hookleftarrow}\) \hookleftarrow \({\hookrightarrow}\) \hookrightarrow \({\leftharpoonup}\) \leftharpoonup
\({\rightharpoonup}\) \rightharpoonup \({\leftharpoondown}\) \leftharpoondown \({\rightharpoondown}\) \rightharpoondown
\({\uparrow}\) \uparrow \({\downarrow}\) \downarrow \({\updownarrow}\) \updownarrow
\({\Uparrow}\) \Uparrow \({\Downarrow}\) \Downarrow \({\Updownarrow}\) \Updownarrow
\({\nearrow}\) \nearrow \({\searrow}\) \searrow \({\swarrow}\) \swarrow
\({\nwarrow}\) \nwarrow

其他箭头符号

symbol command symbol command symbol command
\({\dashleftarrow}\) \dashleftarrow \({\dashrightarrow}\) \dashrightarrow \({\leftleftarrows}\) \leftleftarrows
\({\leftleftarrows}\) \leftleftarrows \({\leftrightharpoons}\) \leftrightharpoons \({\circlearrowleft}\) \circlearrowleft
\({\leftrightarrows}\) \leftrightarrows \({\rightleftharpoons}\) \rightleftharpoons \({\circlearrowright}\) \circlearrowright
\({\rightleftarrows}\) \rightleftarrows \({\Lsh}\) \Lsh \({\multimap}\) \multimap
\({\Lleftarrow}\) \Lleftarrow \({\Rsh}\) \Rsh \({\upuparrows}\) \upuparrows
\({\Rrightarrow}\) \Rrightarrow \({\looparrowleft}\) \looparrowleft \({\downdownarrows}\) \downdownarrows
\({\twoheadleftarrow}\) \twoheadleftarrow \({\looparrowright}\) \looparrowright \({\upharpoonleft}\) \upharpoonleft
\({\twoheadrightarrow}\) \twoheadrightarrow \({\curvearrowleft}\) \curvearrowleft \({\curvearrowright}\) \curvearrowright
\({\leftarrowtail}\) \leftarrowtail \({\rightarrowtail}\) \rightarrowtail \({\downharpoonright}\) \downharpoonright
\({\rightsquigarrow}\) \rightsquigarrow \({\leftrightsquigarrow}\) \leftrightsquigarrow

其他箭头符号

symbol command symbol command symbol command
\({\dashleftarrow}\) \dashleftarrow \({\dashrightarrow}\) \dashrightarrow \({\leftleftarrows}\) \leftleftarrows
\({\leftleftarrows}\) \leftleftarrows \({\leftrightharpoons}\) \leftrightharpoons \({\circlearrowleft}\) \circlearrowleft
\({\leftrightarrows}\) \leftrightarrows \({\rightleftharpoons}\) \rightleftharpoons \({\circlearrowright}\) \circlearrowright
\({\rightleftarrows}\) \rightleftarrows \({\Lsh}\) \Lsh \({\multimap}\) \multimap
\({\Lleftarrow}\) \Lleftarrow \({\Rsh}\) \Rsh \({\upuparrows}\) \upuparrows
\({\Rrightarrow}\) \Rrightarrow \({\looparrowleft}\) \looparrowleft \({\downdownarrows}\) \downdownarrows
\({\twoheadleftarrow}\) \twoheadleftarrow \({\looparrowright}\) \looparrowright \({\upharpoonleft}\) \upharpoonleft
\({\twoheadrightarrow}\) \twoheadrightarrow \({\curvearrowleft}\) \curvearrowleft \({\curvearrowright}\) \curvearrowright
\({\leftarrowtail}\) \leftarrowtail \({\rightarrowtail}\) \rightarrowtail \({\downharpoonright}\) \downharpoonright
\({\rightsquigarrow}\) \rightsquigarrow \({\leftrightsquigarrow}\) \leftrightsquigarrow

其他符号

空格

symbol command symbol command symbol command
\(a \! b\) a ! b \(a b\) a b \(a {\,} b\) a {,} b
\(a {\;} b\) a {;} b \(a {\quad} b\) a {\quad} b \(a {\qquad} b\) a {\qquad} b

上下划线

symbol command symbol command symbol command
\({\overline{abc}}\) \overline \({\underline{abc}}\) \underline \({\overrightarrow{abc}}\) \overrightarrow
\({\overleftarrow{abc}}\) \overleftarrow \(\overleftrightarrow{abc}\) \overleftrightarrow \({\widehat{abc}}\) \widehat
\({\widetilde{abc}}\) \widetilde \({\overbrace{abc}}\) \overbrace \({\underbrace{abc}}\) \underbrace

重音符号

symbol command symbol command symbol command
\({\hat{a}}\) \hat \({\check{a}}\) \check \({\tilde{a}}\) \tilde
\({\acute{a}}\) \acute \({\bar{a}}\) \bar \({\dddot{a}}\) \dddot
\({\grave{a}}\) \grave \({\mathring{a}}\) \mathring \({\dddot{a}}\) \dddot
\({\breve{a}}\) \breve \({\dot{a}}\) \dot \({\ddddot{a}}\) \ddddot
\({\vec{a}}\) \vec \({\ddot{a}}\) \ddot \({\widehat{AAA}}\) \widehat
\({\widetilde{AAA}}\) \widetilde{AAA

其他特殊符号

symbol command symbol command symbol command
\({\infty}\) \infty \({\sharp}\) \sharp \({\surd}\) \surd
\({\eth}\) \eth \({\flat}\) \flat \({\wp}\) \wp
\({\clubsuit}\) \clubsuit \({\natural}\) \natural \({\angle}\) \angle
\({\diamondsuit}\) \diamondsuit \({\Bbbk}\) \Bbbk \({\measuredangle}\) \measuredangle
\({\heartsuit}\) \heartsuit \({\bigstar}\) \bigstar \({\sphericalangle}\) \sphericalangle
\({\spadesuit}\) \spadesuit \({\diagdown}\) \diagdown \({\complement}\) \complement
\({\cdots}\) \cdots \({\diagup}\) \diagup \({\triangle}\) \triangle
\({\vdots}\) \vdots \({\Diamond}\) \Diamond \({\blacklozenge}\) \blacklozenge
\({\ldots}\) \ldots \({\Finv}\) \Finv \({\blacksquare}\) \blacksquare
\({\ddots}\) \ddots \({\Game}\) \Game \({\blacktriangle}\) \blacktriangle
\({\Im}\) \Im \({\hbar}\) \hbar \({\blacktriangledown}\) \blacktriangledown
\({\Re}\) \Re \({\hslash}\) \hslash \({\backprime}\) \backprime
\({\imath}\) \imath \({\mho}\) \mho \({\circledS}\) \circledS
\({\jmath}\) \jmath \({\square}\) \square $$

使用技巧

上下方编写

symbol command symbol command symbol command
\({\overset{d}{abc}}\) \overset{d \({\underset{d}{abc}}\) \underset{d{abc}} \({\overset{abc}{\leftarrow}}\) \overset{abc}
\({\overset{abc}{\rightarrow}}\) \overset{abc} \({\xleftarrow[def]{abc}}\) \xleftarrow[def] \({\xrightarrow[def]{abc}}\) \xrightarrow[def]

多行函数式

\[f(x) = {\begin{cases} x, & x<3 \\ 2x, & x=3 \\ 4x, & x>3 \end{cases}} \]

f(x) =  {\begin{cases}  x, & x<3 \\  2x, & x=3 \\  4x, & x>3  \end{cases}}

多行公式对齐

\[{\begin{align} f(x) & = a+1 \\ f(y) & = a+b-c \\ & = ac - 10 \end{align}} \]

{\begin{align}  f(x) & = a+1 \\  f(y) & = a+b-c \\  & = ac - 10  \end{align}}

矩阵

\[{\begin{matrix} a & b & c \\ d & e & f \\ g & h & i \end{matrix}} \]

{\begin{matrix}  a & b & c \\  d & e & f \\  g & h & i  \end{matrix}}

\[{\begin{bmatrix} a & b & c \\ d & e & f \\ g & h & i \end{bmatrix}} \]

{\begin{bmatrix}  a & b & c \\  d & e & f \\  g & h & i  \end{bmatrix}}

\[{\begin{pmatrix} a & b & c \\ d & e & f \\ g & h & i \end{pmatrix}} \]

{\begin{pmatrix}  a & b & c \\  d & e & f \\  g & h & i  \end{pmatrix}}

\[{\begin{vmatrix} a & b & c \\ d & e & f \\ g & h & i \end{vmatrix}} \]

{\begin{vmatrix}  a & b & c \\  d & e & f \\  g & h & i  \end{vmatrix}}

\[{\begin{Vmatrix} a & b & c \\ d & e & f \\ g & h & i \end{Vmatrix}} \]

{\begin{Vmatrix}  a & b & c \\  d & e & f \\  g & h & i  \end{Vmatrix}}

\[{\begin{Bmatrix} a & b & c \\ d & e & f \\ g & h & i \end{Bmatrix}} \]

{\begin{Bmatrix}  a & b & c \\  d & e & f \\  g & h & i  \end{Bmatrix}}

\[{\begin{bmatrix} a & \cdots & b \\ \vdots & \ddots & \vdots \\ c & \cdots & d \end{bmatrix}} \]

{\begin{bmatrix}  a  &  \cdots  &     b    \\  \vdots &  \ddots  &  \vdots  \\  c   & \cdots  &     d  \end{bmatrix}}

字体

\[\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathcal{abcdefghijklmnopqrstuvwxyz} \\ \mathcal{0123456789} \]

\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathcal{abcdefghijklmnopqrstuvwxyz} \\  \mathcal{0123456789}

\[\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathbb{abcdefghijklmnopqrstuvwxyz} \\ \mathbb{0123456789} \]

\mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathbb{abcdefghijklmnopqrstuvwxyz} \\  \mathbb{0123456789}

\[\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathfrak{abcdefghijklmnopqrstuvwxyz} \\ \mathfrak{0123456789} \]

\mathfrak{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathfrak{abcdefghijklmnopqrstuvwxyz} \\  \mathfrak{0123456789}

\[\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathsf{abcdefghijklmnopqrstuvwxyz} \\ \mathsf{0123456789} \]

\mathsf{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathsf{abcdefghijklmnopqrstuvwxyz} \\  \mathsf{0123456789}

\[\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathbf{abcdefghijklmnopqrstuvwxyz} \\ \mathbf{0123456789} \]

\mathbf{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathbf{abcdefghijklmnopqrstuvwxyz} \\  \mathbf{0123456789}

\[\boldsymbol{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \boldsymbol{abcdefghijklmnopqrstuvwxyz} \\ \boldsymbol{0123456789} \]

\boldsymbol{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \boldsymbol{abcdefghijklmnopqrstuvwxyz} \\  \boldsymbol{0123456789}

\[\mathit{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathit{abcdefghijklmnopqrstuvwxyz} \\ \mathit{0123456789} \]

\mathit{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathit{abcdefghijklmnopqrstuvwxyz} \\  \mathit{0123456789}

\[\mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\ \mathrm{abcdefghijklmnopqrstuvwxyz} \\ \mathrm{0123456789} \]

\mathrm{ABCDEFGHIJKLMNOPQRSTUVWXYZ} \\  \mathrm{abcdefghijklmnopqrstuvwxyz} \\  \mathrm{0123456789}

文字颜色

\[{\color{#CD5C5C}Hello!\ Ich\ bin\ Echo,\ Thanks\ for\ your\ attention!} \]

{\color{#CD5C5C}Hello!\ Ich\ bin\ Echo,\ Thanks\ for\ your\ attention!}