LaTeX Syntax Quick Reference

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Every time you need it, it's always a hassle to find, so we decided to write a LaTeX syntax quick reference table.

Category	Description	Syntax	Output
Text Styles	Bold	\textbf{AB}	$\textbf{AB}$
	Italic	\textit{AB}	$\textit{AB}$
	Underline	\underline{AB}	$\underline{AB}$
	Overline	\overline{AB}	$\overline{AB}$
	Typewriter Font	\texttt{AB}	$\texttt{AB}$
Math Structures	Fraction	\frac{A}{B}	$\frac{A}{B}$
	Fraction (displayed)	\dfrac{a}{b}	$\dfrac{a}{b}$
	Fraction (inline)	\tfrac{a}{b}	$\tfrac{a}{b}$
	Fraction (old style)	{A \over B}	$\frac{A}{B}$
	Binomial Coefficient	\binom{n}{k}	$\binom{n}{k}$
	Binomial Coefficient (old style)	{n \choose k}	$\binom{n}{k}$
	Square Root	\sqrt{x}	$\sqrt{x}$
	n-th Root	\sqrt[n]{x}	$\sqrt[n]{x}$
	Exponentiation	a^b	$a^b$
	Subscript	a_b	$a_b$
	Integral	\int_a^b x^2 \mathrm{d} x	$\int_a^b x^2 \mathrm{d} x$
	Summation	\sum_{n=1}^\infty \frac{1}{n}	$\sum_{n=1}^\infty \frac{1}{n}$
	Limit	\lim_{x \to \infty} \frac{1}{x}	$\lim_{x \to \infty} \frac{1}{x}$
	Product	\prod_{i=1}^n i	$\prod_{i=1}^n i$
Math Symbols	Sine	\sin{\theta}	$\sin{\theta}$
	Cosine	\cos{\theta}	$\cos{\theta}$
	Plus-Minus	\pm	$\pm$
	Multiplication	\times	$\times$
	Division	\div	$\div$
	Subset	\subseteq	$\subseteq$
	Superset	\supseteq	$\supseteq$
	Implies	\implies	$\implies$
	Implied By	\impliedby	$\impliedby$
	If and Only If	\iff	$\iff$
	Intersection	\cap	$\cap$
	Union	\cup	$\cup$
	Logical AND	\land	$\land$
	Logical OR	\lor	$\lor$
	Logical NOT	\neg	$\neg$
	Not Equal To	\neq	$\neq$
	Approximately Equal To	\approx	$\approx$
Special Symbols	Greek Letter α	\alpha	$\alpha$
	Greek Letter β	\beta	$\beta$
	Greek Letter γ	\gamma	$\gamma$
	Angle	\angle	$\angle$
	Triangle	\triangle	$\triangle$
	Square	\square	$\square$
	Real Part	\Re	$\Re$
	Imaginary Part	\Im	$\Im$
	Imaginary Unit i	\imath	$\imath$
	Imaginary Unit j	\jmath	$\jmath$
	Greek Letter ε	\epsilon	$\epsilon$
	Greek Letter φ	\phi	$\phi$
	Variant Greek Letter φ	\varphi	$\varphi$
Matrices and Vectors	Matrix (parentheses)	\begin{pmatrix} a & b \\ c & d \end{pmatrix}	$\begin{pmatrix} a & b\\ c & d \end{pmatrix}$
	Matrix (no parentheses)	\begin{matrix} x & y \\ z & w \end{matrix}	$\begin{matrix} x & y \\ z & w \end{matrix}$
	Vector	\vec{v}	$\vec{v}$
	Identity Matrix	\mathbf{I}	$\mathbf{I}$
	Zero Matrix	\mathbf{0}	$\mathbf{0}$
Miscellaneous	Angle	\angle	$\angle$
	Triangle	\triangle	$\triangle$
	Square	\square	$\square$
	Space	\quad	$\quad$
	Proportional To	\propto	$\propto$
	Because	\because	$\because$
	Therefore	\therefore	$\therefore$
	Integer Set	\mathbb{Z}	$\mathbb{Z}$
	Probability Set	\mathbb{P}	$\mathbb{P}$
	Real Number Set	\mathbb{R}	$\mathbb{R}$
	Complex Number Set	\mathbb{C}	$\mathbb{C}$
	Imaginary Space	\Im	$\Im$
	Real Space	\Re	$\Re$
	Empty Set	\emptyset	$\emptyset$
	Empty Set (nicer)	\varnothing	$\varnothing$
	Belongs To	\in	$\in$
	Not Belongs To	\not\in	$\not\in$
	Greek Letter χ	\chi	$\chi$
	Counterclockwise Circle Arrow	\circlearrowleft	$\circlearrowleft$
	Clockwise Circle Arrow	\circlearrowright	$\circlearrowright$
	Counterclockwise Curved Arrow	\curvearrowleft	$\curvearrowleft$
	Clockwise Curved Arrow	\curvearrowright	$\curvearrowright$
	Planck Constant	\hbar	$\hbar$
	Natural Logarithm	\ln	$\ln$
	Constant π	\pi	$\pi$
	Set Symbol $\cup$	\cup	$\cup$
	Set Symbol $\cap$	\cap	$\cap$
Formatting	Function Color	f(x) = a{\color{red}{x}} + b	$f(x) = a{\color{red}{x}} + b$
	Colored Box	\colorbox{#eeeeee}{Color Box}	$\colorbox{#eeeeee}{Color Box}$
	Calligraphic Font	{\cal ABCDE12345abced}	${\cal ABCDE12345abced}$
	Boxed Text	\fbox{boxed text}	$\fbox{boxed text}$
	Display Style Boxed Text	\boxed{boxed\ text}	$\boxed{boxed\ text}$
	Fraktur Font	{\frak ABCDE12345abcde}	${\frak ABCDE12345abcde}$
	Italic	{\it abefg12345}\ abcdefg12345	${\it abefg12345}\ abcdefg12345$
	Minimize	\min\limits_{n}	$\min\limits_{n}$
	Bold Greek Letter	\boldsymbol{\alpha}	$\boldsymbol{\alpha}$