Here are some symbols that are not used very usual and how to type it in LaTex.

Operators

Greek and Hebrew letters

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

Math constructs

symbol	command	symbol	command	symbol	command
$\frac{abc}{xyz}$	\frac{abc}{xyz}	$\overline{abc}$	\overline{abc}	$\overrightarrow{abc}$	\overrightarrow{abc}
$f’$	f’	$\underline{abc}$	\underline{abc}	$\overleftarrow{abc}$	\overleftarrow{abc}
$\sqrt{abc}$	\sqrt{abc}	$\widehat{abc}$	\widehat{abc}	$\overbrace{abc}$	\overbrace{abc}
$\sqrt[n]{abc}$	\sqrt[n]{abc}	$\widetilde{abc}$	\widetilde{abc}	$\underbrace{abc}$	\underbrace{abc}

Delimiters

symbol	command	symbol	command	symbol	command	symbol	command	symbol	command	symbol	command
$	$	|	${$	\{	$\lfloor$	\lfloor	$/$	/	$\Uparrow$	\Uparrow	$\llcorner$
$\vert$	\vert	$}$	\}	$\rfloor$	\rfloor	$\backslash$	\backslash	$\uparrow$	\uparrow	$\lrcorner$	\lrcorner
$|$	\		$\langle$	$\lceil$	$\lceil$	\lceil	$[$	[	$\Downarrow$	\Downarrow	$\ulcorner$
$\Vert$	\Vert	$\rangle$	\rangle	$\rceil$	\rceil	$]$	]	$\downarrow$	\downarrow	$\urcorner$	\urcorner

Variable-sized symbols

symbol	command	symbol	command	symbol	command	symbol	command	symbol	command
$\sum$	\sum	$\int$	\int	$\int$	\int	$\bigoplus$	\bigoplus	$\bigvee$	\bigvee
$\prod$	\prod	$\oint$	\oint	$\bigcap$	\bigcap	$\bigotimes$	\bigotimes	$\bigwedge$	\bigwedge
$\coprod$	\coprod	$\iint$	\iint	$\bigcup$	\bigcup	$\bigodot$	\bigodot	$\bigsqcup$	\bigsqcup

Standard Function Names

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

Binary Operation/Relation Symbols

symbol	command	symbol	command	symbol	command	symbol	command
$\ast$	\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
$\equiv$	\equiv	$\prec$	\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

Arrow symbols

$\leftarrow$	\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

Miscellaneous symbols

$\infty$	\infty	$\forall$	\forall	$\Bbbk$	\Bbbk	$\wp$	\wp
$\nabla$	\nabla	$\exists$	\exists	$\bigstar$	\bigstar	$\angle$	\angle
$\partial$	\partial	$\nexists$	\nexists	$\diagdown$	\diagdown	$\measuredangle$	\measuredangle
$\eth$	\eth	$\emptyset$	\emptyset	$\diagup$	\diagup	$\sphericalangle$	\sphericalangle
$\clubsuit$	\clubsuit	$\varnothing$	\varnothing	$\Diamond$	\Diamond	$\complement$	\complement
$\diamondsuit$	\diamondsuit	$\imath$	\imath	$\Finv$	\Finv	$\triangledown$	\triangledown
$\heartsuit$	\heartsuit	$\jmath$	\jmath	$\Game$	\Game	$\triangle$	\triangle
$\spadesuit$	\spadesuit	$\ell$	\ell	$\hbar$	\hbar	$\vartriangle$	\vartriangle
$\cdots$	\cdots	$\iiiint$	\iiiint	$\hslash$	\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	$\blacktriangledown$	\blacktrinagledown
$\Im$	\Im	$\flat$	\flat	$\square$	\square	$\backprime$	\backprime
$\Re$	\Re	$\natural$	\natural	$\surd$	\surd	$\circledS$	\circledS

Math mode accents

$\acute{a}$	\acute{a}	$\bar{a}$	\bar{a}	$\Acute{\Acute{A}}$	\Acute{\Acute{A}}	$\Bar{\Bar{A}}$	\Bar{\Bar{A}}
$\breve{a}$	\breve{a}	$\check{a}$	\check{a}	$\Breve{\Breve{A}}$	\Breve{\Breve{A}}	$\Check{\Check{A}}$	\Check{\Check{A}}
$\ddot{a}$	\ddot{a}	$\dot{a}$	\dot{a}	$\Ddot{\Ddot{A}}$	\Ddot{\Ddot{A}}	$\Dot{\Dot{A}}$	\Dot{\Dot{A}}
$\grave{a}$	\grave{a}	$\hat{a}$	\hat{a}	$\Grave{\Grave{A}}$	\Grave{\Grave{A}}	$\Hat{\Hat{A}}$	\Hat{\Hat{A}}
$\tilde{a}$	\tilde{a}	$\vec{a}$	\vec{a}	$\Tilde{\Tilde{A}}$	\Tilde{\Tilde{A}}	$\Vec{\Vec{A}}$	\Vec{\Vec{A}}

Array environment

PLAINTEXT

1

$$
\left( $$\begin{array}{cc} 2\tau & 7\phi-frac5{12} \ 3\psi & \frac{\pi}8 \end{array}$$ \right) \left( $$\begin{array}{c} x \ y \end{array}$$ \right) \mbox{and} \left[ $$\begin{array}{cc|r} 3 & 4 & 5 \ 1 & 3 & 729 \end{array}$$ \right]
$$

PLAINTEXT

1

$$f(z) = \left{ \begin{array}{rcl} \overline{\overline{z^2}+\cos z} & \mbox{for} & |z|<3 \ 0 & \mbox{for} & 3\leq|z|\leq5 \ \sin\overline{z} & \mbox{for} & |z|>5 \end{array}\right.$$

Other

Font sizes

Math

PLAINTEXT

1

${\displaystyle \int f^{-1}(x-x_a),dx}$

PLAINTEXT

1

${\textstyle \int f^{-1}(x-x_a),dx}$

PLAINTEXT

1

${\scriptstyle \int f^{-1}(x-x_a),dx}$

PLAINTEXT

1

${\scriptscriptstyle \int f^{-1}(x-x_a),dx}$

Text

\tiny = $\tiny{smallest}$

\scriptsize = $\scriptsize {very small}$

\footnotesize = $\footnotesize {smaller}$

\small = $\small{small}$

\normalsize = $\normalsize {normal}$

\large = $\large{large}$

\Large = $\Large {Large}$

\LARGE = $\LARGE{LARGE}$

\huge = $\huge{huge}$

\Huge = $\Huge{Huge}

Author: o_oyao

Link: http://dyingdown.github.io/2019/09/04/LaTex-Symbols/

License: All articles in this blog are licensed under CC BY-NC-SA 4.0 unless stating additionally.