$\TeX$

    Blot can typeset $$\TeX$$. Use two dollar signs ($) to delimit the $$\TeX$$. You can use $$\TeX$$ in the middle of a sentence, or on its own line:

    $$
    f(x) = 2x^2 + 2/3
    $$
  
  

Accents

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

See also letters.

Accent functions inside \text{…}

$\text{'{a}}$	'{a}	$\text{\~{a}}$	\~{a}	$\text{\.{a}}$	\.{a}
$\text{\`{a}}$	\`{a}	$\text{\={a}}$	\={a}	$\text{"{a}}$	"{a}
$\text{\^{a}}$	\^{a}	$\text{\u{a}}$	\u{a}	$\text{\r{a}}$	\r{a}
$\text{\H{a}}$	\H{a}	$\text{\v{a}}$	\v{a}

Delimiters

$(\,)$	( )	$\lgroup\:\rgroup$	\lgroup \rgroup	$\lceil\:\rceil$	\lceil \rceil	$\uparrow$	\uparrow
$[\:]$	[ ]	$\lbrack\:\rbrack$	\lbrack \rbrack	⌊⌋	\lfloor \rfloor	$\downarrow$	\downarrow
$\{\,\}$	\{ \}	$\lbrace\:\rbrace$	\lbrace \rbrace	$\ulcorner \urcorner$	\ulcorner \urcorner	$\updownarrow$	\updownarrow
$\langle\:\rangle$	\langle \rangle	$\lt\:\gt$	\lt \gt	$\llcorner \lrcorner$	\llcorner \lrcorner	$\Uparrow$	\Uparrow
$|$	|	$\vert$	\vert	$\backslash$	\backslash	$\Downarrow$	\Downarrow
$\|$	\|	$\Vert$	\Vert	$\lmoustache\:\rmoustache$	\lmoustache \rmoustache	$\Updownarrow$	\Updownarrow
$\lvert\;\rvert$	\lvert \rvert	$\lVert\;\rVert$	\lVert \rVert		\left.		\right.

Delimiter Sizing

$\left(\LARGE{AB}\right)$	\left( \LARGE{AB} \right)	\left	\big	\bigl	\bigr
		\middle	\Big	\Bigl	\Bigr
$( \big( \Big( \bigg( \Bigg($	( \big( \Big( \bigg( \Bigg(	\right	\bigg	\biggl	\biggr
			\Bigg	\Biggl	\Biggr

Environments

$\begin{matrix} a&b\\c&d \end{matrix}$	\begin{matrix} a & b \\ c & d \end{matrix}	$\begin{array}{c|c} a&b\\c&d \end{array}$	\begin{array}{c|c} a & b \\ c & d \end{array}
$\begin{pmatrix} a & b\\c & d \end{pmatrix}$	\begin{pmatrix} a & b \\ c & d \end{pmatrix}	$\begin{bmatrix} a & b\\c & d \end{bmatrix}$	\begin{bmatrix} a & b \\ c & d \end{bmatrix}
$\begin{vmatrix} a & b\\c & d \end{vmatrix}$	\begin{vmatrix} a & b \\ c & d \end{vmatrix}	$\begin{Vmatrix} a & b\\c & d \end{Vmatrix}$	\begin{Vmatrix} a & b \\ c & d \end{Vmatrix}
$\begin{Bmatrix} a & b\\c & d \end{Bmatrix}$	\begin{Bmatrix} a & b \\ c & d \end{Bmatrix}	$\def\arraystretch{1.5}\begin{array}{c:c:c} a & b & c\\\hline d & e & f\\\hdashline g & h & i \end{array}$	\def\arraystretch{1.5} \begin{array}{c:c:c} a & b & c \\ \hline d & e & f \\ \hdashline g & h & i \end{array}
$\begin{aligned} a&=b+c\\d+e&=f \end{aligned}$	\begin{aligned} a&=b+c \\ d+e&=f \end{aligned}	$\begin{alignedat}{2}10&x+&3&y=2\\3&x+&13&y=4\end{alignedat}$	\begin{alignedat}{2} 10&x+ &3&y = 2 \\ 3&x+&13&y = 4 \end{alignedat}
$\begin{gathered} a=b\\e=b+c \end{gathered}$	\begin{gathered} a=b \\ e=b+c \end{gathered}	$x = \begin{cases} a &\text{if } b\\c &\text{if } d \end{cases}$	x = \begin{cases} a &\text{if } b \\ c &\text{if } d \end{cases}

There is also support for {darray} and {dcases}. Acceptable line separators include: \\, \cr, and \\[distance]. Distance can be written with any of the units. The {array} environment does not yet support \hline.

Greek Letters

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

Other Letters

$\imath$	\imath	$\jmath$	\jmath	ℵ	\aleph	ℶ	\beth	ℷ	\gimel
ℸ	\daleth	ð	\eth	Ⅎ	\Finv	⅁	\Game	ℓ	\ell
ℏ	\hbar	ℏ	\hslash	ℑ	\Im	ℜ	\Re	℘	\wp
∂	\partial	∇	\nabla	$\Bbbk$	\Bbbk
Direct Input:		ℂ ℍ ℕ ℙ ℚ ℝ ℤ ∂ ð ∇ ℑ ℓ ℘ ℜ Ⅎ ℵ ℶ ℷ ℸ ⅁ ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖÙÚÛÜÝÞ àáâãäåçèéêëìíîïðñòóôöùúûüýþÿ

Letters inside \text{}

\text{…} will accept the functions: \ae, \AE, \oe, \OE, \o, \O, \ss, \i, \j. \text{…} also accepts Unicode characters from:

Script	Unicode Range	Script	Unicode Range
Latin-1	0080 — 00FF	Sinhala	0D80 — 0DFF
Cyrillic	0400 — 04FF	Thai	0E00 — 0E7F
Devanagari	0900 — 097F	Lao	0E80 — 0EFF
Bengali	0980 — 09FF	Tibetan	0F00 — 0FFF
Gurmukhi	0A00 — 0A7F	CJK symbols and punctuation	3000 — 303F
Gujarati	0A80 — 0AFF	Hiragana	3040 — 309F
Oriya	0B00 — 0B7F	Katakana	30A0 — 30FF
Tamil	0B80 — 0BFF	CJK ideograms	4E00 — 9FAF
Telugu	0C00 — 0C7F	Hangul	AC00 — D7AF
Kannada	0C80 — 0CFF	Full width punctuation	FF00 — FF60
Malayalam	0D00 — 0D7F

Annotation

$\cancel{5}$	\cancel{5}	$\overbrace{a+b+c}^{\text{note}}$	\overbrace{a+b+c}^{\text{note}}
$\bcancel{5}$	\bcancel{5}	$\underbrace{a+b+c}_{\text{note}}$	\underbrace{a+b+c}_{\text{note}}
$\xcancel{ABC}$	\xcancel{ABC}	$\boxed{\pi = \frac c d}$	\boxed{\pi=\frac c d}
$\sout{abc}$	\sout{abc}
$\not =$	\not =

Overlap

${=}\mathllap{/\,}$	{=}\mathllap{/\,}	$\left(x^{\smash{2}}\right)$	\left(x^{\smash{2}}\right)
$\mathrlap{\,/}{=}$	\mathrlap{\,/}{=}	$\sqrt{\smash[b]{y}}$	\sqrt{\smash[b]{y}}
$\displaystyle \sum_{\mathclap{1\le i\le j\le n}} x_{ij}$	\sum_{\mathclap{1\le i\le j\le n}} x_{ij}

There is also support for \llap, \rlap, and \clap, but they will take only text, not math, as arguments.

Spacing

Function	Produces	Function	Produces
\!	– ³∕₁₈ em space	\kern{distance}	space, width = distance
\,	³∕₁₈ em space	\mkern{distance}	space, width = distance
\thinspace	³∕₁₈ em space	\skip{distance}	space, width = distance
\:	⁴∕₁₈ em space	\mskip{distance}	space, width = distance
\medspace	⁴∕₁₈ em space	\hspace{distance}	space, width = distance
\;	⁵∕₁₈ em space	\hspace*{distance}	space, width = distance
\thickspace	⁵∕₁₈ em space	\phantom{content}	space the width and height of content
\enspace	½ em space	\hphantom{content}	space the width of content
\quad	1 em space	\vphantom{content}	a strut the height of content
\qquad	2 em space
~	non-breaking space
\space	non-breaking space
\space	non-breaking space

{distance} will accept any of the units.
\mkern and \mskip will not work in text mode and both will write a console warning for any unit except mu.

See also environments

Vertical Layout

$x_n$	x_n	$\stackrel{!}{=}$	\stackrel{!}{=}	$a \atop b$	a \atop b
$e^x$	e^x	$\overset{!}{=}$	\overset{!}{=}	$a\raisebox{0.25em}{b}c$	a\raisebox{0.25em}{b}c
$_u^o$	_u^o	$\underset{!}{=}$	\underset{!}{=}

See also relations and binary operators

Logic and Set Theory

∀	\forall	∁	\complement	∴	\therefore	¬	\neg or \lnot
∃	\exists	⊂	\subset	∵	\because	∅	\emptyset or \varnothing
∄	\nexists	⊃	\supset	↦	\mapsto
∈	\in	∣	\mid	→	\to	⟹	\implies
∉	\notin	∧	\land	←	\gets	⟸	\impliedby
∋	\ni	∨	\lor	↔	\leftrightarrow	⟺	\iff
$\notni$	\notni
Direct Input:		∀ ∴ ∁ ∵ ∃ ∣ ∈ ∉ ∋ ⊂ ⊃ ∧ ∨ ↦ → ← ↔ ℂ ℍ ℕ ℙ ℚ ℝ ℤ

Big Operators

∑	\sum	∏	\prod	⋁	\bigvee	⨂	\bigotimes
∫	\int	∐	\coprod	⋀	\bigwedge	⨁	\bigoplus
∬	\iint	∫	\intop	⋂	\bigcap	⨀	\bigodot
∭	\iiint	∫	\smallint	⋃	\bigcup	⨄	\biguplus
∮	\oint			⨆	\bigsqcup
Direct Input:		∫ ∬ ∭ ∮ ∏ ∐ ∑ ⋀ ⋁ ⋂ ⋃ ⨀ ⨁ ⨂ ⨄ ⨆

Binary Operators

+	+	⋅	\cdot	⋗	\gtrdot
−	-	⋅	\cdotp	⊺	\intercal
/	/	$\centerdot$	\centerdot	∧	\land
∗	*	∘	\circ	⋋	\leftthreetimes
⨿	\amalg	⊛	\circledast	.	\ldotp
&	\And	⊚	\circledcirc	∨	\lor
∗	\ast	⊝	\circleddash	⋖	\lessdot
⊼	\barwedge	⋓	\Cup	⊲	\lhd
◯	\bigcirc	∪	\cup	⋉	\ltimes
⊡	\boxdot	⋎	\curlyvee	⊳	\rhd
⋏	\curlywedge	∓	\mp	⊟	\boxminus
÷	\div	⊙	\odot	⊞	\boxplus
⋇	\divideontimes	⊖	\ominus	⊠	\boxtimes
∔	\dotplus	⊕	\oplus	∙	\bullet
⩞	\doublebarwedge	⊗	\otimes	⋒	\Cap
⋒	\doublecap	⊘	\oslash	∩	\cap
⋓	\doublecup	±	\pm	⋌	\rightthreetimes
⋊	\rtimes	∖	\setminus	$\smallsetminus$	\smallsetminus
⊓	\sqcap	⊔	\sqcup	×	\times
⊴	\unlhd	⊵	\unrhd	⊎	\uplus
∨	\vee	⊻	\veebar	∧	\wedge
≀	\wr
$x \pmod a$	x \pmod a	$x \pod a$	x \pod a
$x\mod a$	x\mod a	$\bmod$	\bmod
Direct Input:	+ - / * ⋅ ± × ÷ ∓ ∔ ∧ ∨ ∩ ∪ ≀ ⊎ ⊓ ⊔ ⊕ ⊖ ⊗ ⊘ ⊙ ⊚ ⊛ ⊝ ⊞ ⊟ ⊠ ⊡ ⊺ ⊻ ⊼ ⋇ ⋉ ⋊ ⋋ ⋌ ⋎ ⋏ ⋒ ⋓ ⩞

Binomial Coefficients

$\binom{n}{k}$	\binom{n}{k}	$\dbinom{n}{k}$	\dbinom{n}{k}	$\left\langle n \atop k \right\rangle$	\left\langle n \atop k \right\rangle
${n}\choose{k}$	{n}\choose{k}	$\tbinom{n}{k}$	\tbinom{n}{k}

Fractions

$\frac{a}{b}$	\frac{a}{b}	$\dfrac{a}{b}$	\dfrac{a}{b}	${a}/{b}$	{a}/{b}
${a}\over{b}$	{a}\over{b}	$\tfrac{a}{b}$	\tfrac{a}{b}

Math Operators

arcsin	\arcsin	cotg	\cotg	ln	\ln	det	\det
arccos	\arccos	coth	\coth	log	\log	gcd	\gcd
arctan	\arctan	csc	\csc	sec	\sec	inf	\inf
arctg	\arctg	ctg	\ctg	sin	\sin	lim	\lim
arcctg	\arcctg	cth	\cth	sinh	\sinh	lim inf	\liminf
arg	\arg	deg	\deg	sh	\sh	lim sup	\limsup
ch	\ch	dim	\dim	tan	\tan	max	\max
cos	\cos	exp	\exp	tanh	\tanh	min	\min
cosec	\cosec	hom	\hom	tg	\tg	Pr	\Pr
cosh	\cosh	ker	\ker	th	\th	sup	\sup
cot	\cot	lg	\lg
asin x	\operatorname{asin} x

Functions on the right side of this table can take \limits.

Sqrt

$\sqrt{x}$	\sqrt{x}
$\sqrt[3]{x}$	\sqrt[3]{x}

Relations

$\stackrel{!}{=}$	\stackrel{!}{=}
=	=	⋟	\curlyeqsucc	⪆	\gtrapprox
<	<	⊣	\dashv	⋛	\gtreqless
>	>	$\dblcolon$	\dblcolon	⪌	\gtreqqless
:	:	≐	\doteq	≷	\gtrless
≈	\approx	≑	\Doteq	≳	\gtrsim
≊	\approxeq	≑	\doteqdot	∈	\in
≍	\asymp	≖	\eqcirc	⋈	\Join
∍	\backepsilon	$\eqcolon$	\eqcolon	≤	\le
∽	\backsim	$\Eqcolon$	\Eqcolon	≤	\leq
⋍	\backsimeq	$\eqqcolon$	\eqqcolon	≦	\leqq
≬	\between	$\Eqqcolon$	\Eqqcolon	⩽	\leqslant
⋈	\bowtie	≂	\eqsim	⪅	\lessapprox
≏	\bumpeq	⪖	\eqslantgtr	⋚	\lesseqgtr
≎	\Bumpeq	⪕	\eqslantless	⪋	\lesseqqgtr
≗	\circeq	≡	\equiv	≶	\lessgtr
$\colonapprox$	\colonapprox	≒	\fallingdotseq	≲	\lesssim
$\Colonapprox$	\Colonapprox	⌢	\frown	≪	\ll
$\coloneq$	\coloneq	≥	\ge	⋘	\lll
$\Coloneq$	\Coloneq	≥	\geq	⋘	\llless
$\coloneqq$	\coloneqq	≧	\geqq	<	\lt
$\Coloneqq$	\Coloneqq	⩾	\geqslant	∣	\mid
$\colonsim$	\colonsim	≫	\gg	⊨	\models
$\Colonsim$	\Colonsim	⋙	\ggg	⊸	\multimap
≅	\cong	⋙	\gggtr	∋	\owns
⋞	\curlyeqprec	>	\gt	∥	\parallel
⊥	\perp	⪸	\succapprox	⋔	\pitchfork
≽	\succcurlyeq	≺	\prec	⪰	\succeq
⪷	\precapprox	≿	\succsim	≼	\preccurlyeq
⋑	\Supset	⪯	\preceq	⊃	\supset
≾	\precsim	⊇	\supseteq	∝	\propto
⫆	\supseteqq	≓	\risingdotseq	≈	\thickapprox
∣	\shortmid	∼	\thicksim	∥	\shortparallel
⊴	\trianglelefteq	∼	\sim	≜	\triangleq
≃	\simeq	⊵	\trianglerighteq	$\smallfrown$	\smallfrown
∝	\varpropto	$\smallsmile$	\smallsmile	△	\vartriangle
⌣	\smile	⊲	\vartriangleleft	⊏	\sqsubset
⊳	\vartriangleright	⊑	\sqsubseteq	$\vcentcolon$	\vcentcolon
⊐	\sqsupset	⊢	\vdash	⊒	\sqsupseteq
⊨	\vDash	⋐	\Subset	⊩	\Vdash
⊂	\subset	⊪	\Vvdash	⊆	\subseteq
⫅	\subseteqq	≻	\succ
Direct Input:		= < > : ∈ ∋ ∝ ∼ ∽ ≂ ≃ ≅ ≈ ≊ ≍ ≎ ≏ ≐ ≑ ≒ ≓ ≖ ≗ ≜ ≡ ≤ ≥ ≦ ≧ ≫ ≬ ≳ ≷ ≺ ≻ ≼ ≽ ≾ ≿ ⊂ ⊃ ⊆ ⊇ ⊏ ⊐ ⊑ ⊒ ⊢ ⊣ ⊩ ⊪ ⊸ ⋈ ⋍ ⋐ ⋑ ⋔ ⋙ ⋛ ⋞ ⋟ ⌢ ⌣ ⩾ ⪆ ⪌ ⪕ ⪖ ⪯ ⪰ ⪷ ⪸ ⫅ ⫆

Negated Relations

⪊	\gnapprox		\ngeqslant	⊈	\nsubseteq
⪈	\gneq	≯	\ngtr		\nsubseteqq
≩	\gneqq	≰	\nleq	⊁	\nsucc
⋧	\gnsim		\nleqq	⋡	\nsucceq
	\gvertneqq		\nleqslant	⊉	\nsupseteq
⪉	\lnapprox	≮	\nless		\nsupseteqq
⪇	\lneq	∤	\nmid	⋪	\ntriangleleft
≨	\lneqq	∉	\notin	⋬	\ntrianglelefteq
⋦	\lnsim	$\notni$	\notni	⋫	\ntriangleright
	\lvertneqq	∦	\nparallel	⋭	\ntrianglerighteq
≆	\ncong	⊀	\nprec	⊬	\nvdash
≠	\ne	⋠	\npreceq	⊭	\nvDash
≠	\neq		\nshortmid	⊯	\nVDash
≱	\ngeq		\nshortparallel	⊮	\nVdash
	\ngeqq	≁	\nsim	⪹	\precnapprox
⪵	\precneqq	⋨	\precnsim	⊊	\subsetneq
⫋	\subsetneqq	⪺	\succnapprox	⪶	\succneqq
⋩	\succnsim	⊋	\supsetneq	⫌	\supsetneqq
	\varsubsetneq		\varsubsetneqq		\varsupsetneq
	\varsupsetneqq	$\not =$	\not =
Direct Input:		∉ ∤ ∦ ≁ ≆ ≠ ≨ ≩ ≮ ≯ ≰ ≱ ⊀ ⊁ ⊈ ⊉ ⊊ ⊋ ⊬ ⊭ ⊮ ⊯ ⋠ ⋡ ⋦ ⋧ ⋨ ⋩ ⋬ ⋭ ⪇ ⪈ ⪉ ⪊ ⪵ ⪶ ⪹ ⪺ ⫋ ⫌

Arrows

↺	\circlearrowleft	⇐	\Leftarrow
↻	\circlearrowright	↢	\leftarrowtail
↶	\curvearrowleft	↽	\leftharpoondown
↷	\curvearrowright	↼	\leftharpoonup
⇠	\dashleftarrow	⇇	\leftleftarrows
⇢	\dashrightarrow	↔	\leftrightarrow
↓	\downarrow	⇔	\Leftrightarrow
⇓	\Downarrow	⇆	\leftrightarrows
⇊	\downdownarrows	⇋	\leftrightharpoons
⇃	\downharpoonleft	↭	\leftrightsquigarrow
⇂	\downharpoonright	⇚	\Lleftarrow
←	\gets	⟵	\longleftarrow
↩	\hookleftarrow	⟸	\Longleftarrow
↪	\hookrightarrow	⟷	\longleftrightarrow
⟺	\iff	⟺	\Longleftrightarrow
⟸	\impliedby	⟼	\longmapsto
⟹	\implies	⟶	\longrightarrow
⇝	\leadsto	⟹	\Longrightarrow
←	\leftarrow	↫	\looparrowleft
↬	\looparrowright	⇉	\rightrightarrows
↰	\Lsh	⇝	\rightsquigarrow
↦	\mapsto	⇛	\Rrightarrow
↗	\nearrow	↱	\Rsh
↚	\nleftarrow	↘	\searrow
⇍	\nLeftarrow	↙	\swarrow
↮	\nleftrightarrow	→	\to
⇎	\nLeftrightarrow	↞	\twoheadleftarrow
↛	\nrightarrow	↠	\twoheadrightarrow
⇏	\nRightarrow	↑	\uparrow
↖	\nwarrow	⇑	\Uparrow
↾	\restriction	↕	\updownarrow
→	\rightarrow	⇕	\Updownarrow
⇒	\Rightarrow	↿	\upharpoonleft
↣	\rightarrowtail	↾	\upharpoonright
⇁	\rightharpoondown	⇈	\upuparrows
⇀	\rightharpoonup	⇄	\rightleftarrows
⇌	\rightleftharpoons
Direct Input:		= < > : ∈ ∋ ∝ ∼ ∽ ≂ ≃ ≅ ≈ ≊ ≍ ≎ ≏ ≐ ≑ ≒ ≓ ≖ ≗ ≜ ≡ ≤ ≥ ≦ ≧ ≫ ≬ ≳ ≷ ≺ ≻ ≼ ≽ ≾ ≿ ⊂ ⊃ ⊆ ⊇ ⊏ ⊐ ⊑ ⊒ ⊢ ⊣ ⊩ ⊪ ⊸ ⋈ ⋍ ⋐ ⋑ ⋔ ⋙ ⋛ ⋞ ⋟ ⌢ ⌣ ⩾ ⪆ ⪌ ⪕ ⪖ ⪯ ⪰ ⪷ ⪸ ⫅ ⫆

Extensible Arrows

$\xrightarrow{over}$	\xrightarrow{over}	$\xRightarrow{abc}$	\xRightarrow{abc}
$\xrightarrow[under]{over}$	\xrightarrow[under]{over}	$\xmapsto{abc}$	\xmapsto{abc}
$\xleftarrow{abc}$	\xleftarrow{abc}	$\xLeftarrow{abc}$	\xLeftarrow{abc}
$\xleftrightarrow{abc}$	\xleftrightarrow{abc}	$\xLeftrightarrow{abc}$	\xLeftrightarrow{abc}
$\xhookleftarrow{abc}$	\xhookleftarrow{abc}	$\xhookrightarrow{abc}$	\xhookrightarrow{abc}
$\xtwoheadrightarrow{abc}$	\xtwoheadrightarrow{abc}	$\xlongequal{abc}$	\xlongequal{abc}
$\xtwoheadleftarrow{abc}$	\xtwoheadleftarrow{abc}	$\xtofrom{abc}$	\xtofrom{abc}
$\xrightharpoonup{abc}$	\xrightharpoonup{abc}	$\xrightharpoondown{abc}$	\xrightharpoondown{abc}
$\xleftharpoonup{abc}$	\xleftharpoonup{abc}	$\xleftharpoondown{abc}$	\xleftharpoondown{abc}
$\xrightleftharpoons{abc}$	\xrightleftharpoons{abc}	$\xleftrightharpoons{abc}$	\xleftrightharpoons{abc}

Extensible arrows all can take an optional argument in the same manner as \xrightarrow[under]{over}.

Class Assignment

\mathbin	\mathclose	\mathinner	\mathop
\mathopen	\mathord	\mathpunct	\mathrel

Color

The color function behaves like a switch.

$\color{blue} F=ma$	\color{blue} F=ma
$\color{#fc625d} F=ma$	\color{#fc625d} F=ma

Other color functions always expect the content to be a function argument.

$\textcolor{forestgreen}{F=ma}$	\textcolor{forestgreen}{F=ma}
$\textcolor{#fc625d}{F=ma}$	\textcolor{#fc625d}{F=ma}
$\colorbox{gold}{A}$	\colorbox{gold}{A}
$\fcolorbox{black}{gold}{A}$	\fcolorbox{black}{gold}{A}

For color definition, color functions will accept the standard HTML predefined color names. They will also accept an RGB argument in CSS hexa­decimal style.

Font

AB	\mathrm{AB}	AB	\mathit{AB}	AB	\frak{AB}
AB	\textrm{AB}	AB	\textit{AB}	AB	\mathfrak{AB}
AB	\rm{AB}	AB	\it{AB}	AB	\mathscr{AB}
AB	\textnormal{AB}	AB	\Bbb{AB}	AB	\mathcal{AB}
AB	\text{AB}	AB	\mathbb{AB}
AB	\mathbf{AB}	AB	\mathtt{AB}
AB	\textbf{AB}	AB	\texttt{AB}
AB	\bf{AB}	AB	\tt{AB}
AB	\bold{AB}	AB	\textsf{AB}
AB	\boldsymbol{AB}	AB	\sf{AB}
AB	\bm{AB}	AB	\mathsf{AB}

One can stack font family, font weight, and font shape by using the \textXX versions of the font functions. So \textsf{\textbf{H}} will produce $\textsf{\textbf{H}}$. The other versions so not stack, e.g., \mathsf{\mathbf{H}} will produce $\mathsf{\mathbf{H}}$.

Size

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

Style

$\displaystyle\sum_{i=1}^n$	\displaystyle\sum_{i=1}^n
$\textstyle\sum_{i=1}^n$	\textstyle\sum_{i=1}^n
$\scriptstyle x$	\scriptstyle x	The size of a first sub/superscript
$\scriptscriptstyle x$	\scriptscriptstyle x	The size of subsequent sub/superscripts
$\lim\limits_x$	\lim\limits_x
$\lim\nolimits_x$	\lim\nolimits_x
$\verb! x^2!$	\verb!x^2!
$\text{x}$	\text{x}

\text{…} will accept nested $…$ fragments and render them in math mode.

\text{…} will render an extended range of characters. See Letters inside \text.

Symbols and Punctuation

	% comment	□	\Box	…	\dots
%	\%	□	\square	⋯	\cdots
#	\#	■	\blacksquare	⋱	\ddots
&	\&	$\triangle$	\triangle	…	\ldots
_	\_	$\triangledown$	\triangledown	⋮	\vdots
_	\textunderscore	$\triangleleft$	\triangleleft	…	\mathellipsis
–	–	$\triangleright$	\triangleright	…	\textellipsis
–	\textendash	$\bigtriangledown$	\bigtriangledown	♭	\flat
—	–-	$\bigtriangleup$	\bigtriangleup	♮	\natural
—	\textemdash	▲	\blacktriangle	♯	\sharp
’	`	▼	\blacktriangledown	®	\circledR
’	\textquoteleft	◀	\blacktriangleleft	Ⓢ	\circledS
’	\textquoteright	▶	\blacktriangleright	♣	\clubsuit
“	\textquotedblleft	⋄	\diamond	♢	\diamondsuit
″	″	◊	\Diamond	♡	\heartsuit
”	\textquotedblright	◊	\lozenge	♠	\spadesuit
:	\colon	⧫	\blacklozenge	∠	\angle
‵	\backprime	⋆	\star	∡	\measuredangle
′	\prime	★	\bigstar	∢	\sphericalangle
<	\textless	|	\textbar	⊤	\top
>	\textgreater	∥	\textbardbl	⊥	\bot
{	\textbraceleft	}	\textbraceright	✓	\checkmark
†	\dag	†	\dagger	†	\textdagger
‡	\ddag	‡	\ddagger	‡	\textdaggerdbl
$	\$	$	\textdollar	£	\pounds
£	\textsterling	¥	\yen	√	\surd
°	\degree	╲	\diagdown	╱	\diagup
℧	\mho	✠	\maltese	∇	\nabla
∞	\infty

$\KaTeX$	\KaTeX	$\LaTeX$	\LaTeX	$\TeX$	\TeX
Direct Input:	£ ¥ ∇ ∞ · ∠ ∡ ∢ ♠ ♡ ♢ ♣ ♭ ♮ ♯ ✓

Units

Units are proportioned as they are in TeX instead of CSS.

Unit	Value	Unit	Value
em	CSS em	bp	$\frac 1{72}$ inch × F × G
ex	CSS ex	pc	12 $\TeX$pt
mu	$\frac 1{18}$ CSS em	dd	$\frac{1238}{1157}$ $\TeX$pt
pt	$\frac 1{72.27}$ inch × F × G	cc	$\frac{14856}{1157}$ $\TeX$pt
mm	1 mm × F × G	nd	$\frac{685}{642}$ $\TeX$pt
cm	1 cm × F × G	nc	$\frac{1370}{107}$ $\TeX$pt
in	1 inch × F × G	sp	$\frac 1{65536}$ $\TeX$pt

where:	F = $\large \frac{\text{font size of surrounding HTML text}}{10\text{ pt}}$
	G = 1.21 by default, because $\TeX$ font-size is normally 1.21 × the surrounding font size. This value can be over-ridden by the CSS of an HTML page. For example, on this page, G = 1.0.

The effect of style and size

Unit	textstyle	scriptscript	huge
em or ex	$\rule{1em}{1em}$	$\scriptscriptstyle\rule{1em}{1em}$	$\huge\rule{1em}{1em}$
mu	$\rule{18mu}{18mu}$	$\scriptscriptstyle\rule{18mu}{18mu}$	$\huge\rule{18mu}{18mu}$
others	$\rule{10pt}{10pt}$	$\scriptscriptstyle\rule{10pt}{10pt}$	$\huge\rule{10pt}{10pt}$

See also the official documentation of KaTeX.