Latex Mathematical Symbols | LATEX数学符号

1. 希腊语和希伯来语字母
2. LATEX数学结构
3. 定界符 | 分隔符
4. 可变大小的符号（显示的公式显示较大的版本）
5. 标准函数名称
6. 二元操作 | 关系符号
7. 箭头符号
8. 杂项符号
9. 数学模式：音调
10. 矩阵 | 阵列环境及其实例
11. 其他样式（仅数学模式)
12. 字体大小
13. 文本模式：音调和符号

更多特殊的符号在基础LATEX(NFSS)中并没有定义，需要使用 \usepackage{amssymb}。

这些符号比较多，就不写使用例子了，更多LaTex | Markdown语法我会另起文章。

1. 希腊语和希伯来语字母

符号	语法	符号	语法	符号	语法
α \alpha α	\alpha	β \beta β	\beta	χ \chi χ	\chi
δ \delta δ	\delta	ϵ \epsilon ϵ	\epsilon	η \eta η	\eta
γ \gamma γ	\gamma	ι \iota ι	\iota	κ \kappa κ	\kappa
λ \lambda λ	\lambda	μ \mu μ	\mu	ν \nu ν	\nu
o o o	o	ω \omega ω	\omega	ϕ \phi ϕ	\phi
π \pi π	\pi	ψ \psi ψ	\psi	ρ \rho ρ	\rho
σ \sigma σ	\sigma	τ \tau τ	\tau	θ \theta θ	\theta
υ \upsilon υ	\upsilon	ξ \xi ξ	\xi	ζ \zeta ζ	\zeta
ϝ \digamma ϝ	\digamma	ε \varepsilon ε	\varepsilon	ϰ \varkappa ϰ	\varkappa
φ \varphi φ	\varphi	ϖ \varpi ϖ	\varpi	ϱ \varrho ϱ	\varrho
ς \varsigma ς	\varsigma	ϑ \vartheta ϑ	\vartheta	Δ \Delta Δ	\Delta
Γ \Gamma Γ	\Gamma	Λ \Lambda Λ	\Lambda	Ω \Omega Ω	\Omega
Φ \Phi Φ	\Phi	Π \Pi Π	\Pi	Ψ \Psi Ψ	\Psi
Σ \Sigma Σ	\Sigma	Θ \Theta Θ	\Theta	Υ \Upsilon Υ	\Upsilon
Ξ \Xi Ξ	\Xi	ℵ \aleph ℵ	\aleph	ℶ \beth ℶ	\beth
ℸ \daleth ℸ	\daleth	ℷ \gimel ℷ	\gimel

2. LATEX数学结构

符号	语法	符号	语法	符号	语法
a b c x y z \frac{abc}{xyz} xyzabc	\frac{abc}{xyz}	a b c ‾ \overline{abc} abc	\overline{abc}	a b c → \overrightarrow{abc} abc	\overrightarrow{abc}
f ′ f' f′	f’	a b c ‾ \underline{abc} abc	\underline{abc}	a b c ← \overleftarrow{abc} abc	\overleftarrow{abc}
a b c \sqrt{abc} abc	\sqrt{abc}	a b c ^ \widehat{abc} abc	\widehat{abc}	a b c ⏞ \overbrace{abc} abc	\overbrace{abc}
a b c n \sqrt[n]{abc} nabc	\sqrt[n]{abc}	a b c ~ \widetilde{abc} abc	\widetilde{abc}	a b c ⏟ \underbrace{abc} abc	\underbrace{abc}

3. 定界符 | 分隔符

建议使用\left S1和\right S2来匹配定界符S1和S2内容的高度（S1和S2表示两个符号对），如：
\left| expression \right| -> ∣ e x p r e s s i o n ∣ \left| expression \right| ∣expression∣
\left\{ expression \right\} -> { e x p r e s s i o n } \left\{ expression \right\} {expression}
\left\Vert expression \right\Vert -> ∥ e x p r e s s i o n ∥ \left\Vert expression \right\Vert ∥expression∥

符号	语法	符号	语法	符号	语法
\|	\|	∣ \vert ∣	\vert	∥ \\| ∥	\ \|
∥ \Vert ∥	\Vert	{ \{ {	\ {	} \} }	\ }
⟨ \langle ⟨	\langle	⟩ \rangle ⟩	\rangle	⌊ \lfloor ⌊	\lfloor
⌋ \rfloor ⌋	\rfloor	⌈ \lceil ⌈	\lceil	⌉ \rceil ⌉	\rceil
/ / /	/	\ \backslash \	\backslash	[ [ [	[
] ] ]	]	⇑ \Uparrow ⇑	\Uparrow	↑ \uparrow ↑	\uparrow
⇓ \Downarrow ⇓	\Downarrow	↓ \downarrow ↓	\downarrow	└ \llcorner └	\llcorner
┘ \lrcorner ┘	\lrcorner	┌ \ulcorner ┌	\ulcorner	┐ \urcorner ┐	\urcorner

4. 可变大小的符号（显示的公式显示较大的版本）

符号	语法	符号	语法	符号	语法
∑ \sum ∑	\sum	∏ \prod ∏	\prod	∐ \coprod ∐	\coprod
∫ \int ∫	\int	∮ \oint ∮	\oint	∬ \iint ∬	\iint
⨄ \biguplus ⨄	\biguplus	⋂ \bigcap ⋂	\bigcap	⋃ \bigcup ⋃	\bigcup
⨁ \bigoplus ⨁	\bigoplus	⨂ \bigotimes ⨂	\bigotimes	⨀ \bigodot ⨀	\bigodot
⋁ \bigvee ⋁	\bigvee	⋀ \bigwedge ⋀	\bigwedge	⨆ \bigsqcup ⨆	\bigsqcup
∨ \vee ∨	\vee	⊗ \otimes ⊗	\otimes	⊔ \sqcup ⊔	\sqcup

最后一行显示的是正常大小，可看出大小差别

5. 标准函数名称

函数名称应该用罗马体，而不是斜体，如：
正确：\tan(at-n\pi) −> tan ⁡ ( a t − n π ) \tan(at-n\pi) tan(at−nπ)
错误：tan(at-n\pi) −> t a n ( a t − n π ) tan(at-n\pi) tan(at−nπ)

符号	语法	符号	语法	符号	语法
cos ⁡ \cos cos	\cos	sin ⁡ \sin sin	\sin	tan ⁡ \tan tan	\tan
arccos ⁡ \arccos arccos	\arccos	arcsin ⁡ \arcsin arcsin	\arcsin	arctan ⁡ \arctan arctan	\arctan
csc ⁡ \csc csc	\csc	sec ⁡ \sec sec	\sec	cot ⁡ \cot cot	\cot
log ⁡ \log log	\log	ln ⁡ \ln ln	\ln	lim ⁡ \lim lim	\lim
min ⁡ \min min	\min	max ⁡ \max max	\max	exp ⁡ \exp exp	\exp
cosh ⁡ \cosh cosh	\cosh	sinh ⁡ \sinh sinh	\sinh	tanh ⁡ \tanh tanh	\tanh
lim sup ⁡ \limsup limsup	\limsup	sup ⁡ \sup sup	\sup	coth ⁡ \coth coth	\coth
ker ⁡ \ker ker	\ker	deg ⁡ \deg deg	\deg	gcd ⁡ \gcd gcd	\gcd
lg ⁡ \lg lg	\lg	Pr ⁡ \Pr Pr	\Pr	det ⁡ \det det	\det
hom ⁡ \hom hom	\hom	arg ⁡ \arg arg	\arg	dim ⁡ \dim dim	\dim
inf ⁡ \inf inf	\inf	lim inf ⁡ \liminf liminf	\liminf

6. 二元操作 | 关系符号

符号	语法	符号	语法	符号	语法	符号	语法
∗ \ast ∗	\ast	± \pm ±	\pm	∩ \cap ∩	\cap	⊲ \lhd ⊲	\lhd
⋆ \star ⋆	\star	∓ \mp ∓	\mp	∪ \cup ∪	\cup	⊳ \rhd ⊳	\rhd
⋅ \cdot ⋅	\cdot	⨿ \amalg ⨿	\amalg	⊎ \uplus ⊎	\uplus	◃ \triangleleft ◃	\triangleleft
∘ \circ ∘	\circ	⊙ \odot ⊙	\odot	⊓ \sqcap ⊓	\sqcap	▹ \triangleright ▹	\triangleright
∙ \bullet ∙	\bullet	⊖ \ominus ⊖	\ominus	⊔ \sqcup ⊔	\sqcup	⊴ \unlhd ⊴	\unlhd
◯ \bigcirc ◯	\bigcirc	⊕ \oplus ⊕	\oplus	∧ \wedge ∧	\wedge	⊵ \unrhd ⊵	\unrhd
⋄ \diamond ⋄	\diamond	⊘ \oslash ⊘	\oslash	∨ \vee ∨	\vee	▽ \bigtriangledown ▽	\bigtriangledown
× \times ×	\times	⊗ \otimes ⊗	\otimes	† \dagger †	\dagger	△ \bigtriangleup △	\bigtriangleup
÷ \div ÷	\div	≀ \wr ≀	\wr	‡ \ddagger ‡	\ddagger	∖ \setminus ∖	\setminus
⋅ \centerdot ⋅	\centerdot	□ \Box □	\Box	⊼ \barwedge ⊼	\barwedge	⊻ \veebar ⊻	\veebar
⊛ \circledast ⊛	\circledast	⊞ \boxplus ⊞	\boxplus	⋏ \curlywedge ⋏	\curlywedge	⋎ \curlyvee ⋎	\curlyvee
⊚ \circledcirc ⊚	\circledcirc	⊟ \boxminus ⊟	\boxminus	⋒ \Cap ⋒	\Cap	⋓ \Cup ⋓	\Cup
⊝ \circleddash ⊝	\circleddash	⊠ \boxtimes ⊠	\boxtimes	⊥ \bot ⊥	\bot	⊤ \top ⊤	\top
∔ \dotplus ∔	\dotplus	⊡ \boxdot ⊡	\boxdot	⊺ \intercal ⊺	\intercal	⋌ \rightthreetimes ⋌	\rightthreetimes
⋇ \divideontimes ⋇	\divideontimes	□ \square □	\square	⩞ \doublebarwedge ⩞	\doublebarwedge	⋋ \leftthreetimes ⋋	\leftthreetimes
≡ \equiv ≡	\equiv	≤ \leq ≤	\leq	≥ \geq ≥	\geq	⊥ \perp ⊥	\perp
≅ \cong ≅	\cong	≺ \prec ≺	\prec	≻ \succ ≻	\succ	∣ \mid ∣	\mid
≠ \neq =	\neq	⪯ \preceq ⪯	\preceq	⪰ \succeq ⪰	\succeq	∥ \parallel ∥	\parallel
∼ \sim ∼	\sim	≪ \ll ≪	\ll	≫ \gg ≫	\gg	⋈ \bowtie ⋈	\bowtie
≃ \simeq ≃	\simeq	⊂ \subset ⊂	\subset	⊃ \supset ⊃	\supset	⋈ \Join ⋈	\Join
≈ \approx ≈	\approx	⊆ \subseteq ⊆	\subseteq	⊇ \supseteq ⊇	\supseteq	⋉ \ltimes ⋉	\ltimes
≍ \asymp ≍	\asymp	⊏ \sqsubset ⊏	\sqsubset	⊐ \sqsupset ⊐	\sqsupset	⋊ \rtimes ⋊	\rtimes
≐ \doteq ≐	\doteq	⊑ \sqsubseteq ⊑	\sqsubseteq	⊒ \sqsupseteq ⊒	\sqsupseteq	⌣ \smile ⌣	\smile
∝ \propto ∝	\propto	⊣ \dashv ⊣	\dashv	⊢ \vdash ⊢	\vdash	⌢ \frown ⌢	\frown
⊨ \models ⊨	\models	∈ \in ∈	\in	∋ \ni ∋	\ni	∉ \notin ∈/	\notin
≊ \approxeq ≊	\approxeq	≦ \leqq ≦	\leqq	≧ \geqq ≧	\geqq	≶ \lessgtr ≶	\lessgtr
∼ \thicksim ∼	\thicksim	⩽ \leqslant ⩽	\leqslant	⩾ \geqslant ⩾	\geqslant	⋚ \lesseqgtr ⋚	\lesseqgtr
∽ \backsim ∽	\backsim	⪅ \lessapprox ⪅	\lessapprox	⪆ \gtrapprox ⪆	\gtrapprox	⪋ \lesseqqgtr ⪋	\lesseqqgtr
⋍ \backsimeq ⋍	\backsimeq	⋘ \lll ⋘	\lll	⋙ \ggg ⋙	\ggg	⪌ \gtreqqless ⪌	\gtreqqless
≜ \triangleq ≜	\triangleq	⋖ \lessdot ⋖	\lessdot	⋗ \gtrdot ⋗	\gtrdot	⋛ \gtreqless ⋛	\gtreqless
≗ \circeq ≗	\circeq	≲ \lesssim ≲	\lesssim	≳ \gtrsim ≳	\gtrsim	≷ \gtrless ≷	\gtrless
≏ \bumpeq ≏	\bumpeq	⪕ \eqslantless ⪕	\eqslantless	⪖ \eqslantgtr ⪖	\eqslantgtr	∍ \backepsilon ∍	\backepsilon
≎ \Bumpeq ≎	\Bumpeq	≾ \precsim ≾	\precsim	≿ \succsim ≿	\succsim	≬ \between ≬	\between
≑ \doteqdot ≑	\doteqdot	⪷ \precapprox ⪷	\precapprox	⪸ \succapprox ⪸	\succapprox	⋔ \pitchfork ⋔	\pitchfork
≈ \thickapprox ≈	\thickapprox	⋐ \Subset ⋐	\Subset	⋑ \Supset ⋑	\Supset	∣ \shortmid ∣	\shortmid
≒ \fallingdotseq ≒	\fallingdotseq	⫅ \subseteqq ⫅	\subseteqq	⫆ \supseteqq ⫆	\supseteqq	⌢ \smallfrown ⌢	\smallfrown
≓ \risingdotseq ≓	\risingdotseq	⊏ \sqsubset ⊏	\sqsubset	⊐ \sqsupset ⊐	\sqsupset	⌣ \smallsmile ⌣	\smallsmile
∝ \varpropto ∝	\varpropto	≼ \preccurlyeq ≼	\preccurlyeq	≽ \succcurlyeq ≽	\succcurlyeq	⊩ \Vdash ⊩	\Vdash
∴ \therefore ∴	\therefore	⋞ \curlyeqprec ⋞	\curlyeqprec	⋟ \curlyeqsucc ⋟	\curlyeqsucc	⊨ \vDash ⊨	\vDash
∵ \because ∵	\because	◀ \blacktriangleleft ◀	\blacktriangleleft	▶ \blacktriangleright ▶	\blacktriangleright	⊪ \Vvdash ⊪	\Vvdash
≖ \eqcirc ≖	\eqcirc	⊴ \trianglelefteq ⊴	\trianglelefteq	⊵ \trianglerighteq ⊵	\trianglerighteq	∥ \shortparallel ∥	\shortparallel
≠ \neq =	\neq	⊲ \vartriangleleft ⊲	\vartriangleleft	⊳ \vartriangleright ⊳	\vartriangleright	∦ \nshortparallel 	\nshortparallel
≆ \ncong ≆	\ncong	≰ \nleq ≰	\nleq	≱ \ngeq ≱	\ngeq	⊈ \nsubseteq ⊈	\nsubseteq
∤ \nmid ∤	\nmid	≰ \nleqq 	\nleqq	≱ \ngeqq 	\ngeqq	⊉ \nsupseteq ⊉	\nsupseteq
∦ \nparallel ∦	\nparallel	≰ \nleqslant 	\nleqslant	≱ \ngeqslant 	\ngeqslant	⊈ \nsubseteqq 	\nsubseteqq
∤ \nshortmid 	\nshortmid	≮ \nless ≮	\nless	≯ \ngtr ≯	\ngtr	⊉ \nsupseteqq 	\nsupseteqq
∦ \nshortparallel 	\nshortparallel	⊀ \nprec ⊀	\nprec	⊁ \nsucc ⊁	\nsucc	⊊ \subsetneq ⊊	\subsetneq
≁ \nsim ≁	\nsim	⋠ \npreceq ⋠	\npreceq	⋡ \nsucceq ⋡	\nsucceq	⊋ \supsetneq ⊋	\supsetneq
⊯ \nVDash ⊯	\nVDash	⪹ \precnapprox ⪹	\precnapprox	⪺ \succnapprox ⪺	\succnapprox	⫋ \subsetneqq ⫋	\subsetneqq
⊭ \nvDash ⊭	\nvDash	⋨ \precnsim ⋨	\precnsim	⋩ \succnsim ⋩	\succnsim	⫌ \supsetneqq ⫌	\supsetneqq
⊬ \nvdash ⊬	\nvdash	⪉ \lnapprox ⪉	\lnapprox	⪊ \gnapprox ⪊	\gnapprox	⊊ \varsubsetneq 	\varsubsetneq
⋪ \ntriangleleft ⋪	\ntriangleleft	⪇ \lneq ⪇	\lneq	⪈ \gneq ⪈	\gneq	⊋ \varsupsetneq 	\varsupsetneq
⋬ \ntrianglelefteq ⋬	\ntrianglelefteq	≨ \lneqq ≨	\lneqq	≩ \gneqq ≩	\gneqq	⫋ \varsubsetneqq 	\varsubsetneqq
⋫ \ntriangleright ⋫	\ntriangleright	⋦ \lnsim ⋦	\lnsim	⋧ \gnsim ⋧	\gnsim	⫌ \varsupsetneqq 	\varsupsetneqq
⋭ \ntrianglerighteq ⋭	\ntrianglerighteq	≨ \lvertneqq 	\lvertneqq	≩ \gvertneqq 	\gvertneqq

\Join ⋈ \Join ⋈符号应该是粗体，CSDN采用KaTex语法所以看起来和\bowtie ⋈ \bowtie ⋈一样。

7. 箭头符号

符号	语法	符号	语法	符号	语法
← \leftarrow ←	\leftarrow	⟵ \longleftarrow ⟵	\longleftarrow	↑ \uparrow ↑	\uparrow
⇐ \Leftarrow ⇐	\Leftarrow	⟸ \Longleftarrow ⟸	\Longleftarrow	⇑ \Uparrow ⇑	\Uparrow
→ \rightarrow →	\rightarrow	⟶ \longrightarrow ⟶	\longrightarrow	↓ \downarrow ↓	\downarrow
⇒ \Rightarrow ⇒	\Rightarrow	⟹ \Longrightarrow ⟹	\Longrightarrow	⇓ \Downarrow ⇓	\Downarrow
↔ \leftrightarrow ↔	\leftrightarrow	⟷ \longleftrightarrow ⟷	\longleftrightarrow	↕ \updownarrow ↕	\updownarrow
⇔ \Leftrightarrow ⇔	\Leftrightarrow	⟺ \Longleftrightarrow ⟺	\Longleftrightarrow	⇕ \Updownarrow ⇕	\Updownarrow
↦ \mapsto ↦	\mapsto	⟼ \longmapsto ⟼	\longmapsto	↗ \nearrow ↗	\nearrow
↩ \hookleftarrow ↩	\hookleftarrow	↪ \hookrightarrow ↪	\hookrightarrow	↘ \searrow ↘	\searrow
↼ \leftharpoonup ↼	\leftharpoonup	⇀ \rightharpoonup ⇀	\rightharpoonup	↙ \swarrow ↙	\swarrow
↽ \leftharpoondown ↽	\leftharpoondown	⇁ \rightharpoondown ⇁	\rightharpoondown	↖ \nwarrow ↖	\nwarrow
⇌ \rightleftharpoons ⇌	\rightleftharpoons	⇝ \leadsto ⇝	\leadsto
⇢ \dashrightarrow ⇢	\dashrightarrow	⇠ \dashleftarrow ⇠	\dashleftarrow	⇇ \leftleftarrows ⇇	\leftleftarrows
⇆ \leftrightarrows ⇆	\leftrightarrows	⇚ \Lleftarrow ⇚	\Lleftarrow	↞ \twoheadleftarrow ↞	\twoheadleftarrow
↢ \leftarrowtail ↢	\leftarrowtail	↫ \looparrowleft ↫	\looparrowleft	⇋ \leftrightharpoons ⇋	\leftrightharpoons
↶ \curvearrowleft ↶	\curvearrowleft	↺ \circlearrowleft ↺	\circlearrowleft	↰ \Lsh ↰	\Lsh
⇈ \upuparrows ⇈	\upuparrows	↿ \upharpoonleft ↿	\upharpoonleft	⇃ \downharpoonleft ⇃	\downharpoonleft
⊸ \multimap ⊸	\multimap	↭ \leftrightsquigarrow ↭	\leftrightsquigarrow	⇉ \rightrightarrows ⇉	\rightrightarrows
⇄ \rightleftarrows ⇄	\rightleftarrows	⇉ \rightrightarrows ⇉	\rightrightarrows	⇄ \rightleftarrows ⇄	\rightleftarrows
↠ \twoheadrightarrow ↠	\twoheadrightarrow	↣ \rightarrowtail ↣	\rightarrowtail	↬ \looparrowright ↬	\looparrowright
⇌ \rightleftharpoons ⇌	\rightleftharpoons	↷ \curvearrowright ↷	\curvearrowright	↻ \circlearrowright ↻	\circlearrowright
↱ \Rsh ↱	\Rsh	⇊ \downdownarrows ⇊	\downdownarrows	↾ \upharpoonright ↾	\upharpoonright
⇂ \downharpoonright ⇂	\downharpoonright	⇝ \rightsquigarrow ⇝	\rightsquigarrow
↚ \nleftarrow ↚	\nleftarrow	↛ \nrightarrow ↛	\nrightarrow	⇍ \nLeftarrow ⇍	\nLeftarrow
⇏ \nRightarrow ⇏	\nRightarrow	↮ \nleftrightarrow ↮	\nleftrightarrow	⇎ \nLeftrightarrow ⇎	\nLeftrightarrow

8. 杂项符号

符号	语法	符号	语法	符号	语法	符号	语法
∞ \infty ∞	\infty	∀ \forall ∀	\forall	k \Bbbk k	\Bbbk	℘ \wp ℘	\wp
∇ \nabla ∇	\nabla	∃ \exists ∃	\exists	★ \bigstar ★	\bigstar	∠ \angle ∠	\angle
∂ \partial ∂	\partial	∄ \nexists ∄	\nexists	╲ \diagdown ╲	\diagdown	∡ \measuredangle ∡	\measuredangle
ð \eth ð	\eth	∅ \emptyset ∅	\emptyset	╱ \diagup ╱	\diagup	∢ \sphericalangle ∢	\sphericalangle
♣ \clubsuit ♣	\clubsuit	∅ \varnothing ∅	\varnothing	◊ \Diamond ◊	\Diamond	∁ \complement ∁	\complement
♢ \diamondsuit ♢	\diamondsuit	ı \imath ı	\imath	Ⅎ \Finv Ⅎ	\Finv	▽ \triangledown ▽	\triangledown
♡ \heartsuit ♡	\heartsuit	ȷ \jmath ȷ	\jmath	⅁ \Game ⅁	\Game	△ \triangle △	\triangle
♠ \spadesuit ♠	\spadesuit	ℓ \ell ℓ	\ell	ℏ \hbar ℏ	\hbar	△ \vartriangle △	\vartriangle
⋯ \cdots ⋯	\cdots	∫ ∭ \int\iiint ∫∭	\iiiint	ℏ \hslash ℏ	\hslash	⧫ \blacklozenge ⧫	\blacklozenge
⋮ \vdots ⋮	\vdots	∭ \iiint ∭	\iiint	◊ \lozenge ◊	\lozenge	■ \blacksquare ■	\blacksquare
… \ldots …	\ldots	∬ \iint ∬	\iint	℧ \mho ℧	\mho	▲ \blacktriangle ▲	\blacktriangle
⋱ \ddots ⋱	\ddots	♯ \sharp ♯	\sharp	′ \prime ′	\prime	▼ \blacktriangledown ▼	\blacktriangledown
ℑ \Im ℑ	\Im	♭ \flat ♭	\flat	□ \square □	\square	‵ \backprime ‵	\backprime
ℜ \Re ℜ	\Re	♮ \natural ♮	\natural	√ \surd √	\surd	Ⓢ \circledS Ⓢ	\circledS

注：四重积分无空格，这里是因为CSDN采用Katex语法而不是Latex语法，前者无法表示，故用空格隔开。

9. 数学模式：音调

符号	语法	符号	语法	符号	语法	符号	语法
a ˊ \acute{a} aˊ	\acute{a}	a ˉ \bar{a} aˉ	\bar{a}	A ˊ ˊ \acute{\acute{A}} Aˊˊ	\acute{\acute{A}}	A ˉ ˉ \bar{\bar{A}} Aˉˉ	\bar{\bar{A}}
a ˘ \breve{a} a˘	\breve{a}	a ˇ \check{a} aˇ	\check{a}	A ˘ ˘ \breve{\breve{A}} A˘˘	\breve{\breve{A}}	A ˇ ˇ \check{\check{A}} Aˇˇ	\check{\check{A}}
a ¨ \ddot{a} a¨	\ddot{a}	a ˙ \dot{a} a˙	\dot{a}	A ¨ ¨ \ddot{\ddot{A}} A¨¨	\ddot{\ddot{A}}	A ˙ ˙ \dot{\dot{A}} A˙˙	\dot{\dot{A}}
a ˋ \grave{a} aˋ	\grave{a}	a ^ \hat{a} a^	\hat{a}	A ˋ ˋ \grave{\grave{A}} Aˋˋ	\grave{\grave{A}}	A ^ ^ \hat{\hat{A}} A^^	\hat{\hat{A}}
a ~ \tilde{a} a~	\tilde{a}	a ⃗ \vec{a} a	\vec{a}	A ~ ~ \tilde{\tilde{A}} A~~	\tilde{\tilde{A}}	A ⃗ ⃗ \vec{\vec{A}} A	\vec{\vec{A}}

10. 矩阵 | 阵列环境及其实例

最简单的格式：\begin{array}{cols} row1 \\ row2 \\ . . . rowm \end{array}

其中cols包括每一列的一个字符l, r, c (垂直线 | 为可选插入字符)，rowj包括字符&共(n - 1)个，用于分隔行中的n个元素。

例如：
$\left( \begin{array}{cc} 2\tau & 7\phi-\frac5{12} \\ 3\psi & \frac{\pi}8 \end{array} \right)$
( 2 τ 7 ϕ − 5 12 3 ψ π 8 ) \left( \begin{array}{cc} 2\tau & 7\phi-\frac5{12} \\ 3\psi & \frac{\pi}8 \end{array} \right) (2τ3ψ7ϕ−1258π)
$\left( \begin{array}{c} x \\ y \end{array} \right)$
( x y ) \left( \begin{array}{c} x \\ y \end{array} \right) (xy)
$\left[ \begin{array}{cc|r} 3 & 4 & 5 \\ 1 & 3 & 729 \end{array} \right] $
[ 3 4 5 1 3 729 ] \left[ \begin{array}{cc|r} 3 & 4 & 5 \\ 1 & 3 & 729 \end{array} \right] [31435729]
$f(z) = \left\{ \begin{array}{rcl}\overline{\overline{z^2}+\cos z} && |z|<3 \\ 0 && 3\leq|z|\leq5 \\ \sin\overline{z} && |z|>5 \end{array}\right.$
f ( z ) = { z 2 ‾ + cos ⁡ z ‾ ∣ z ∣ < 3 0 3 ≤ ∣ z ∣ ≤ 5 sin ⁡ z ‾ ∣ z ∣ > 5 f(z) = \left\{ \begin{array}{rcl}\overline{\overline{z^2}+\cos z} && |z|<3 \\ 0 && 3\leq|z|\leq5 \\ \sin\overline{z} && |z|>5 \end{array}\right. f(z)=⎩⎨⎧z2+cosz0sinz∣z∣<33≤∣z∣≤5∣z∣>5

11. 其他样式（仅数学模式)

书法字母： $\mathcal{A}$ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z \mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ} ABCDEFGHIJKLMNOPQRSTUVWXYZ
空心字母： $\mathbb{A}$ A B C D E F G H I J K L M N O P Q R S T U V W X Y Z \mathbb{ABCDEFGHIJKLMNOPQRSTUVWXYZ} ABCDEFGHIJKLMNOPQRSTUVWXYZ
德文尖角体字母： $\mathfrak{A}$ A B C D E F G H I J K L M N O P Q R S T a b c d e f g h i j k l m n o p q r s t 1234567890 \mathfrak{ABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrst1234567890} ABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrst1234567890
数学无衬线字母： $\mathsf{A}$ A B C D E F G H I J K L M N O P Q R S T a b c d e f g h i j k l m n o p q r s t 1234567890 \mathsf{ABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrst1234567890} ABCDEFGHIJKLMNOPQRSTabcdefghijklmnopqrst1234567890
数学粗体字母： $\mathbf{A}$ A B C D E F G H I J K L M N O P Q R a b c d e f g h i j k l m n o p q 1234567890 \mathbf{ABCDEFGHIJKLMNOPQRabcdefghijklmnopq1234567890} ABCDEFGHIJKLMNOPQRabcdefghijklmnopq1234567890
数学粗体斜体字母： 先定义\def\mathbi#1{\textbf{\em #1}}，再使用 $\mathbi{A}$ 即可。（KaTex不显示所以这里不做演示。）

12. 字体大小

数学模式：
${\displaystyle \int f^{-1}(x-x_a)\,dx}$ ⟹ ~~~~~~~~~\Longrightarrow          ⟹ ∫ f − 1 ( x − x a ) d x {\displaystyle \int f^{-1}(x-x_a)\,dx} ∫f−1(x−xa)dx
${\textstyle \int f^{-1}(x-x_a)\,dx}$ ⟹ ~~~~~~~~~~~~~\Longrightarrow              ⟹ ∫ f − 1 ( x − x a ) d x {\textstyle \int f^{-1}(x-x_a)\,dx} ∫f−1(x−xa)dx
${\scriptstyle \int f^{-1}(x-x_a)\,dx}$ ⟹ ~~~~~~~~~~\Longrightarrow           ⟹ ∫ f − 1 ( x − x a ) d x {\scriptstyle \int f^{-1}(x-x_a)\,dx} ∫f−1(x−xa)dx
${\scriptscriptstyle \int f^{-1}(x-x_a)\,dx}$ ⟹ \Longrightarrow ⟹ ∫ f − 1 ( x − x a ) d x {\scriptscriptstyle \int f^{-1}(x-x_a)\,dx} ∫f−1(x−xa)dx

文本模式：
$\Huge Huge~size$ ⟹ ~~~~~~~~~~~~~~~~~~~~~\Longrightarrow                      ⟹ H u g e s i z e \Huge Huge~size Huge size
$\huge huge~size$ ⟹ ~~~~~~~~~~~~~~~~~~~~~\Longrightarrow                      ⟹ h u g e s i z e \huge huge~size huge size
$\LARGE LARGE~size$ ⟹ ~~~~~~~~~~~~~~~~~~\Longrightarrow                   ⟹ L A R G E s i z e \LARGE LARGE~size LARGE size
$\Large Large~size$ ⟹ ~~~~~~~~~~~~~~~~~~\Longrightarrow                   ⟹ L a r g e s i z e \Large Large~size Large size
$\large large~size$ ⟹ ~~~~~~~~~~~~~~~~~~\Longrightarrow                   ⟹ l a r g e s i z e \large large~size large size
$\normalsize normal~size$ ⟹ ~~~~~~~~~\Longrightarrow          ⟹ n o r m a l s i z e \normalsize normal~size normal size
$\small small~size$ ⟹ ~~~~~~~~~~~~~~~~~~\Longrightarrow                   ⟹ s m a l l s i z e \small small~size small size
$\footnotesize smaller~size$ ⟹ ~~~~\Longrightarrow     ⟹ s m a l l e r s i z e \footnotesize smaller~size smaller size
$\scriptsize very~small~size$ ⟹ ~~\Longrightarrow   ⟹ v e r y s m a l l s i z e \scriptsize very~small~size very small size
$\tiny smallest~size$ ⟹ ~~~~~~~~~~~~~~\Longrightarrow               ⟹ s m a l l e s t s i z e \tiny smallest~size smallest size

\textstyle和\normalsize可省略。

13. 文本模式：音调和符号

符号	语法	符号	语法	符号	语法	符号	语法
© \copyright c◯	\copyright	£ \pounds £	\pounds	† \dag †	\dag	‡ \ddag ‡	\ddag

其余KaTex语法无法显示的就不写了，反正这部分也几乎不会用到。

参考美国莱斯大学计算与应用数学学院（Rice CAAM）发表的文档，并做了部分错误修正。
如有错漏请不吝指正。

这些符号比较多，就不写使用例子了，更多LaTex | Markdown语法我会写在另起文章。