Here are some symbols that are not used very usual and how to type it in LaTex.
| 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 |
| 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} |
| 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 |
| 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 |
| 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 |
| 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 |
| $\leftarrow$ | \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 |
| $\infty$ | \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 |
| $\acute{a}$ | \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}} |
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] |
$$
\left( \begin{array}{cc} 2\tau & 7\phi-frac5{12} \ 3\psi & \frac{\pi}8 \end{array} \right) \left( \begin{array}{c} x \ y \end{array} \right) \mbox{~and~} \left[ \begin{array}{cc|r} 3 & 4 & 5 \ 1 & 3 & 729 \end{array} \right]
$$
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. |
$$
f(z) = \left{ \begin{array}{rcl} \overline{\overline{z^2}+\cos z} & \mbox{for} & |z|<3 \ 0 & \mbox{for} & 3\leq|z|\leq5 \ \sin\overline{z} & \mbox{for} & |z|>5 \end{array}\right.
$$
1 | ${\displaystyle \int f^{-1}(x-x_a)\,dx}$ |
${\displaystyle \int f^{-1}(x-x_a),dx}$
1 | ${\textstyle \int f^{-1}(x-x_a)\,dx}$ |
${\textstyle \int f^{-1}(x-x_a),dx}$
1 | ${\scriptstyle \int f^{-1}(x-x_a)\,dx}$ |
${\scriptstyle \int f^{-1}(x-x_a),dx}$
1 | ${\scriptscriptstyle \int f^{-1}(x-x_a)\,dx}$ |
${\scriptscriptstyle \int f^{-1}(x-x_a),dx}$
\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}
