KaTex 公式渲染测试

测试 Katex 语法

存在部分渲染问题，参考 Hexo博客渲染KaTeX数学公式

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Accents

Rendering	Syntax
$a'$	a'
$\tilde{a}$	\tilde{a}
$\mathring{g}$	\mathring{g}
$a''$	a''
$\widetilde{ac}$	\widetilde{ac}
$\overgroup{AB}$	\overgroup{AB}
$a^{\prime}$	a^{\prime}
$\utilde{AB}$	\utilde{AB}
$\undergroup{AB}$	\undergroup{AB}
$\acute{a}$	\acute{a}
$\vec{F}$	\vec{F}
$\Overrightarrow{AB}$	\Overrightarrow{AB}
$\bar{y}$	\bar{y}
$\overleftarrow{AB}$	\overleftarrow{AB}
$\overrightarrow{AB}$	\overrightarrow{AB}
$\breve{a}$	\breve{a}
$\underleftarrow{AB}$	\underleftarrow{AB}
$\underrightarrow{AB}$	\underrightarrow{AB}
$\check{a}$	\check{a}
$\overleftharpoon{ac}$	\overleftharpoon{ac}
$\overrightharpoon{ac}$	\overrightharpoon{ac}
$\dot{a}$	\dot{a}
$\overleftrightarrow{AB}$	\overleftrightarrow{AB}
$\overbrace{AB}$	\overbrace{AB}
$\ddot{a}$	\ddot{a}
$\underleftrightarrow{AB}$	\underleftrightarrow{AB}
$\underbrace{AB}$	\underbrace{AB}
$\grave{a}$	\grave{a}
$\overline{AB}$	\overline{AB}
$\overlinesegment{AB}$	\overlinesegment{AB}
$\hat{\theta}$	\hat{\theta}
$\underline{AB}$	\underline{AB}
$\underlinesegment{AB}$	\underlinesegment{AB}
$\widehat{ac}$	\widehat{ac}
$\widecheck{ac}$	\widecheck{ac}
$\underbar{X}$	\underbar{X}

Delimiters

Rendering	Syntax
$\lparen \rparen$	\lparen \rparen
$\lbrack \rbrack$	\lbrack \rbrack
$\lbrace \rbrace$	\lbrace \rbrace
$\langle \rangle$	\langle \rangle
$\lceil \rceil$	\lceil \rceil
$\lfloor \rfloor$	\lfloor \rfloor
$\lmoustache \rmoustache$	\lmoustache \rmoustache
$\lgroup \rgroup$	\lgroup \rgroup
$\lvert \rvert$	\lvert \rvert
$\lVert \rVert$	\lVert \rVert
$\lang \rang$	\lang \rang
$\lt \gt$	\lt \gt
$\llbracket \rrbracket$	\llbracket \rrbracket
$\lBrace \rBrace$	\lBrace \rBrace
$\ulcorner \urcorner$	\ulcorner \urcorner
$\llcorner \lrcorner$	\llcorner \lrcorner
$\uparrow \downarrow$	\uparrow \downarrow
$\updownarrow$	\updownarrow
$\Uparrow \Downarrow$	\Uparrow \Downarrow
$\Updownarrow$	\Updownarrow
$\backslash$	\backslash
\left. \right.	\left. \right.
$\vert$ $\Vert$	\vert \Vert

Delimiter Sizing

$\left( \LARGE{AB} \right)$

\left( \LARGE{AB} \right)

$( \big( \Big( \bigg( \Bigg($

( \big( \Big( \bigg( \Bigg(

\left	\big	\bigl	\bigm	\bigr
\middle	\Big	\Bigl	\Bigm	\Bigr
\right	\bigg	\biggl	\biggm	\biggr
	\Bigg	\Biggl	\Biggm	\Biggr

Environments

$$\begin{equation} a = sad \end{equation}$$

$$\begin{gather} a = b + c \\ c = d + e \end{gather}$$

$$\begin{align} a = b + c \\ c = d + e \end{align}$$

$$\begin{matrix} a & b & c \\ a & b & c \\ \end{matrix}$$

$$\begin{pmatrix} a & b & c \\ c & d & e \cr \end{pmatrix}$$

$$\begin{bmatrix} a & b \cr c & d \cr \end{bmatrix}$$

$$\begin{vmatrix} a & b \cr c & d \cr \end{vmatrix}$$

$$\begin{Vmatrix} a & b \cr c & d \cr \end{Vmatrix}$$

$$\begin{Bmatrix} a & b \cr c & d \cr \end{Bmatrix}$$

$$\def\arraystretch{1.5} \begin{array}{c:c:c} a & b & c \\ \hline d & e & f \\ \hdashline g & h & i \end{array}$$

$$x = \begin{cases} a &\text{if } b \\ c &\text{if } d \end{cases}$$

$$\begin{rcases} a &\text{if } b \\ c &\text{if } d \end{rcases}⇒…$$

$$\begin{smallmatrix} a & b \\ c & d \end{smallmatrix}$$

$$\sum_{ \begin{subarray}{l} i\in\Lambda\\ 0<j<n \end{subarray}}$$

$$\begin{equation} \begin{split} a &=b+c\\ &=e+f \end{split} \end{equation}$$

$$\begin{align} a&=b+c \\ d+e&=f \end{align}$$

$$\begin{gather} a=b \\ e=b+c \end{gather}$$

$$\begin{alignat}{2} 10&x+&3&y=2\\ 3&x+&13&y=4 \end{alignat}$$

$$\begin{CD} A @>a>> B \\ @VbVV @AAcA \\ C @= D \end{CD}$$

Letters and Unicode

Type	Rendering
uppercase	$\varXi$
lowercase	$\thetasym$
letters	$\Im$
Bold	$\bold{A}$

Layout

Annotation

$\cancel{5}$	$\overbrace{a+b+c}^{\text{note}}$
$\bcancel{5}$	$\underbrace{a+b+c}_{\text{note}}$
$\xcancel{ABC}$	$\boxed{\pi=\frac c d}$
$\not =$	$\phase{-78^\circ}$
$\sout{abc}$	$a_{\angl n}$
$a_\angln$

$$\tag{hi} x+y^{2x}$$

$$\tag*{hi} x+y^{2x}$$

Operators

Big Operators

$\sum$	$\prod$	$\bigotimes$	$\bigvee$
$\int$	$\coprod$	$\bigoplus$	$\bigwedge$
$\iint$	$\intop$	$\bigodot$	$\bigcap$
$\iiint$	$\smallint$	$\biguplus$	$\bigcup$
$\oint$	$\oiint$	$\oiiint$	$\bigsqcup$

Binary Operators

$\cdot$	$\gtrdot$	$x \pmod a$	$x \pod a$
$\cdotp$	$\intercal$	$\centerdot$	$\land$
$\rhd$	$\circ$	$\amalg$	$\leftthreetimes$
$\And$	$\lessdot$	$\bigcirc$	$\rightthreetimes$
$\times$	$\veebar$	$\wr$	$\circledast$
$\mp$	$\vee$	$\ltimes$	$\circledcirc$
$\div$	$\wedge$	$\otimes$	$\smallsetminus$

Fractions and Binomials

$\frac{a}{b}$	$\tfrac{a}{b}$
${a \over b}$	$\genfrac ( ] {2pt}{1}a{a+1}$
$\dfrac{a}{b}$	${a \above{2pt} b+1}$
$a/b$	$\cfrac{a}{1 + \cfrac{1}{b}}$
$\binom{n}{k}$	$\dbinom{n}{k}$
$\tbinom{n}{k}$	${n\brace k}$
${n \choose k}$	${n\brack k}$
$\sqrt{x}$	$\sqrt[3]{x}$

Relations

$=$	$\doteqdot$	$\lessapprox$	$\smile$
$\approx$	$\lesssim$	$\lll$	$\llless$
$\eqslantgtr$	$\mid$	$\backsim$	$\backsimeq$
$\bowtie$	$\geq$	$\geqq$	$\owns$
$\geqslant$	$\gg$	$\ggg$	$\thickapprox$
$\propto$	$\triangleq$	$\vartriangle$	$\thicksim$

Negated Relations

$\gnapprox$	$\nsubseteq$	$\ngtr$	$\nless$
$\notin$	$\neq$	$\nsim$	$\gneqq$

Arrows

$\rarr$	$\darr$	$\leftrightarrows$	$\circlearrowleft$
$\rArr$	$\dArr$	$\leftrightharpoons$	$\curvearrowleft$
$\rightarrow$	$\downarrow$	$\leftrightarrow$	$\looparrowleft$
$\Rightarrow$	$\Downarrow$	$\Leftrightarrow$	$\dashrightarrow$
$\rightharpoonup$	$\downharpoonright$	$\rightarrowtail$	$\Rrightarrow$

Extensible Arrows

$\xleftarrow{abc}$	$\xrightarrow[under]{over}$
$\xrightleftharpoons{abc}$	$\xlongequal{abc}$

Style, Color, Size, and Font

Class Assignment

Color

$$\color{blue} F=ma$$

$$\textcolor{blue}{F=ma}$$

Error $$\textcolor{#228B22}{F=ma}$$

$$\colorbox{aqua}{$F=ma$}$$

$$\fcolorbox{red}{aqua}{$F=ma$}$$

Font

$\mathnormal{Ab0}$	$\mathbb{AB}$	$\frak{Ab0}$
$\mathcal{AB0}$	$\it Ab0$	$\mathscr{AB}$

Size

$\Huge AB$	$\huge AB$
$\LARGE AB$	$\Large AB$	$\large AB$
$\normalsize AB$
$\small AB$	$\footnotesize AB$	$\tiny AB$

Style

$\displaystyle\sum_{i=1}^n$	$\scriptstyle x$
$\textstyle\sum_{i=1}^n$	$\scriptscriptstyle $
$\lim\limits_x$	$\verb!x^2!$
$\lim\nolimits_x$

Symbols and Punctuation

$\dots$	$\cdots$	$\ddots$	$\vdots$
$\KaTeX$	$\LaTeX$	$\TeX$	$\checkmark$
$\nabla$	$\infty$	$\infin$	$\dagger$
$\text{--}$	$\pounds$	$\text{\textdollar}$	$\yen$
$\square$	$\Box$	$\blacksquare$	$\triangle$
$\blacklozenge$	$\bigstar$	$\clubsuit$	$\hearts$
$\copyright$	$\circledR$	$\text{\textcircled a}$	$\circledS$