# Operator

In mathematics, an operator is a function (like addition) that acts on one or more numbers to create a new number.

The most known operators are those used for the first four arithmetic operations: addition, subtraction, multiplication, and division (${\displaystyle +}$, ${\displaystyle -}$, ${\displaystyle \times }$, ${\displaystyle /}$).

## List of operators

Addition: ${\displaystyle +}$

Subtraction: ${\displaystyle -}$

Multiplication: ${\displaystyle \times }$

Division: ${\displaystyle /}$

Exponentiation: ${\displaystyle x^{y}}$

Root (radical): ${\displaystyle {\sqrt {\,\,\,\,}}}$

Logarithm: ${\displaystyle \log({\,})}$

Factorial: ${\displaystyle !}$

Summation: ${\displaystyle \sum }$

Product: ${\displaystyle \prod }$

Limit: ${\displaystyle \lim }$

Nearest integer: ${\displaystyle \lfloor \,\,\rceil }$

Floor: ${\displaystyle \lfloor \,\,\rfloor }$

Ceiling: ${\displaystyle \lceil \,\,\rceil }$

Integer part: ${\displaystyle [\,\,]}$

Fractional part: {${\displaystyle \,\,}$}