LaTeX Syntax Quick Reference

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	Display
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 (Display)	\dfrac{a}{b}	$\dfrac{a}{b}$
	Fraction (Inline)	\tfrac{a}{b}	$\tfrac{a}{b}$
	Old-Style Fraction	{A \over B}	$\frac{A}{B}$
	Binomial Coeff.	\binom{n}{k}	$\binom{n}{k}$
	Old-Style Binomial	{n \choose k}	$\binom{n}{k}$
	Square Root	\sqrt{x}	$\sqrt{x}$
	n-th Root	\sqrt[n]{x}	$\sqrt[n]{x}$
	Exponent	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 Equal	\subseteq	$\subseteq$
	Superset Equal	\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	\approx	$\approx$
Greek Letters	Lowercase α	\alpha	$\alpha$
	Uppercase Α	\Alpha	$\Alpha$
	Lowercase β	\beta	$\beta$
	Uppercase Β	\Beta	$\Beta$
	Lowercase γ	\gamma	$\gamma$
	Uppercase Γ	\Gamma	$\Gamma$
	Lowercase δ	\delta	$\delta$
	Uppercase Δ	\Delta	$\Delta$
	Lowercase ε	\epsilon	$\epsilon$
	Uppercase Ε	\Epsilon	$\Epsilon$
	Variant Lowercase φ	\varphi	$\varphi$
	Uppercase Φ	\Phi	$\Phi$
	Lowercase χ	\chi	$\chi$
	Uppercase Χ	\Chi	$\Chi$
	Lowercase μ	\mu	$\mu$
	Uppercase Μ	\Mu	$\Mu$
	Lowercase ω	\omega	$\omega$
	Uppercase Ω	\Omega	$\Omega$
Matrices & Vectors	Matrix (with brackets)	\begin{pmatrix} a & b \\ c & d \end{pmatrix}	$\begin{pmatrix} a & b\\ c & d \end{pmatrix}$
	Matrix (no brackets)	\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 Part	\Im	$\Im$
	Real Part	\Re	$\Re`
	Empty Set	\emptyset	$\emptyset$
	Fancy Empty Set	\varnothing	$\varnothing$
	Element Of	\in	$\in$
	Not Element Of	\not\in	$\not\in$
	Counterclockwise Arrow	\circlearrowleft	$\circlearrowleft$
	Clockwise Arrow	\circlearrowright	$\circlearrowright$
	Planck's Constant	\hbar	$\hbar$
	Natural Log	\ln	$\ln$
	Constant $\pi$	\pi	$\pi$
Formatting	Function Color	f(x) = a{\color{red}{x}} + b	$f(x) = a{\color{red}{x}} + b$
	Color Box	\colorbox{#eeeeee}{Color Box}	$\colorbox{#eeeeee}{Color Box}$
	Calligraphic Font	{\cal ABCDE12345abced}	${\cal ABCDE12345abced}$
	Framed Text	\fbox{boxed text}	$\fbox{boxed text}$
	Boxed Display Style Text	\boxed{boxed\ text}	$\boxed{boxed\ text}$
	Fraktur Font	{\frak ABCDE12345abcde}	${\frak ABCDE12345abcde}$
	Italic Font	{\it abefg12345}\ abcdefg12345	${\it abefg12345}\ abcdefg12345$
	Minimum	\min\limits_{n}	$\min\limits_{n}$
	Bold Greek Letter	\boldsymbol{\alpha}	$\boldsymbol{\alpha}$