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LaTeX math symbols and equations

Copy math symbols, equation environments, matrices and alignment syntax with package-aware notes.

56 entries

Math mode, grouping and fractions

Inline math
\(a+b\)

Wrap mathematical notation inside running text. [1][2]

Display math
\[a+b\]

Start a displayed, unnumbered mathematics expression. [1][2]

Numbered equation
\begin{equation}a=b\end{equation}

Adds an equation number to the display. [1][2]

Unnumbered equation
\begin{equation*}a=b\end{equation*}

Amsmath gives the starred unnumbered form. [1][2]

Exponent
x^{n+1}

Group all tokens that belong in the superscript. [1][2]

Subscript
a_{i,j}

Use braces around multiple index characters. [1][2]

Combined index and power
x_i^2

Both a subscript and superscript can follow one symbol. [1][2]

Fraction
\frac{a+b}{c+d}

The two required arguments are numerator and denominator. [1][2]

Display-size fraction
\dfrac{a}{b}

Amsmath makes a fraction at display size. [1][2]

Text-size fraction
\tfrac{a}{b}

Amsmath produces a compact inline-sized fraction. [1][2]

Square root
\sqrt{x+1}

Root symbol extends over the braced mathematical expression. [1][2]

Nth root
\sqrt[3]{x}

Optional bracket supplies the root index. [1][2]

Text in equation
\text{rate}

Amsmath text command prints words upright in math mode. [1][2]

Operator name
\operatorname{rank}(A)

Define an upright math operator with proper spacing. [1][2]

Symbols, functions and accents

Alpha
\alpha

Prints the lowercase Greek alpha symbol. [1][2]

Beta
\beta

Prints the lowercase Greek beta symbol. [1][2]

Gamma
\gamma

Prints the lowercase Greek gamma symbol. [1][2]

Uppercase Gamma
\Gamma

Prints the uppercase Greek gamma symbol. [1][2]

Pi
\pi

Prints lowercase pi for formulas. [1][2]

Sigma
\Sigma

Prints uppercase Greek sigma. [1][2]

Infinity
\infty

Prints the mathematical infinity symbol. [1][2]

Less than or equal
\leq

Typesets the less-than-or-equal relation. [1][2]

Greater than or equal
\geq

Typesets the greater-than-or-equal relation. [1][2]

Not equal
\neq

Typesets the not-equal relation. [1][2]

Approximate equality
\approx

Typesets the approximately-equal relation. [1][2]

Element membership
\in

States element-of set membership. [1][2]

Subset relation
\subseteq

States subset-or-equal relation. [1][2]

Multiplication dot
\cdot

Typesets the centered multiplication dot. [1][2]

Cross multiplication
\times

Typesets multiplication cross or Cartesian product. [1][2]

Plus or minus
\pm

Prints the plus/minus symbol. [1][2]

Vector arrow
\vec{v}

Adds an arrow accent over a single symbol. [1][2]

Wide vector arrow
\overrightarrow{AB}

Extends an arrow over a grouped expression. [1][2]

Wide hat
\widehat{ABC}

Extends a hat accent over multiple letters. [1][2]

Overline
\overline{AB}

Adds a horizontal bar over the complete group. [1][2]

Sums, limits and delimiters

Finite summation
\sum_{i=1}^{n}i

Includes both summation limits. [1][2]

Definite integral
\int_0^1 f(x)\,dx

Integrates between zero and one with thin spacing. [1][2]

Limit of function
\lim_{x\to0}f(x)

Notates the variable approaching zero. [1][2]

Partial derivative
\frac{\partial f}{\partial x}

Expresses a first partial derivative. [1][2]

Binomial coefficient
\binom{n}{k}

Amsmath creates two numbers in binomial notation. [1][2]

Absolute-value bars
\lvert x\rvert

Uses paired fixed-size math delimiters. [1][2]

Automatically sized brackets
\left(\frac{a}{b}\right)

Parentheses grow around tall material. [1][2]

Manually sized brackets
\bigl(x\bigr)

Specifies enlarged delimiters without auto-sizing. [1][2]

Thin math spacing
a\,b

Adds a small controlled space between symbols. [1][2]

Quad spacing
a\quad b

Adds a large, font-relative mathematics space. [1][2]

Double-quad spacing
a\qquad b

Adds two quad widths of math spacing. [1][2]

Aligned equations and matrices

Two aligned rows
\begin{align}a&=b\\c&=d\end{align}

Ampersands align columns and double backslashes separate rows. [1][2]

Unnumbered aligned rows
\begin{align*}a&=b\\c&=d\end{align*}

Starred amsmath alignment omits equation numbers. [1][2]

Split numbered equation
\begin{equation}\begin{split}a&=b\\&=c\end{split}\end{equation}

Split aligns multiline content under a single number. [1][2]

Piecewise cases
f=\begin{cases}0&x<0\\1&x\geq0\end{cases}

Cases pairs values with conditional expressions. [1][2]

Parentheses matrix
\begin{pmatrix}a&b\\c&d\end{pmatrix}

Amsmath matrix with surrounding round brackets. [1][2]

Square-bracket matrix
\begin{bmatrix}a&b\\c&d\end{bmatrix}

Amsmath matrix with surrounding square brackets. [1][2]

Undelimited matrix
\begin{matrix}a&b\\c&d\end{matrix}

Amsmath matrix without automatic delimiters. [1][2]

Determinant-style matrix
\begin{vmatrix}a&b\\c&d\end{vmatrix}

Amsmath matrix enclosed in vertical bars. [1][2]

Suppress equation-row number
\begin{align}a&=b\notag\\c&=d\end{align}

Notag disables a selected row number. [1][2]

Create equation label
\begin{equation}\label{eq:a}a=b\end{equation}

Attaches an identifier for later references. [1][2]

Reference equation number
\eqref{eq:a}

Amsmath inserts a parenthesized equation number. [1][2]

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Updated LaTeX2e · amsmath

Sources

  1. LaTeX2e reference manual ↗
  2. amsmath package ↗