Infinity Symbol

Symbol Format Data
Code Point
U+221E
TeX
\infty
SVG
All symbols

Usage

The infinity symbol in math represents the concept of infinity. Typically, the symbol is used in an expression like this:

In plain language, this expression represents the limit of the expression as the variable approaches infinity.

Links

Limit

The limit operator describes the result of an expression as a variable approaches a value. The operator is used in calculus to formalize what mathematicians mean by approach.

Series

A series is the sum of the terms of a sequence. It can be finite or infinite, depending on the underlying sequence. In calculus, series are used to approximate functions, study convergence and divergence, and understand the behavior of infinite sums.