# Operator

mapping from one vector space or module to another in mathematics

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: ${\displaystyle \log({\,})}$
• Modulation: \
• 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: {${\displaystyle \,\,}$ }