# Symbols:Arithmetic and Algebra/Absolute Value

## Absolute Value

$\size x$

The absolute value of the variable $x$, when $x \in \R$.

$\size x = \begin {cases} x & : x > 0 \\ 0 & : x = 0 \\ -x & : x < 0 \end {cases}$

The $\LaTeX$ code for $\size x$ is \size x .

## Also see

See:

Symbols:Cardinality
Symbols:Complex Modulus
Symbols:Order of Structure
Symbols:Order of Group Element

for other uses of this symbol.