# Definition:Neighborhood of Infinity (Real Analysis)/Positive Infinity

< Definition:Neighborhood of Infinity (Real Analysis)(Redirected from Definition:Neighborhood of Positive Infinity)

Jump to navigation
Jump to search
## Definition

A **neighborhood of $+\infty$** is a subset of the set of real numbers $\R$ wich contains an interval $(a,+\infty)$ for some $a\in\R$.

That is, a subset which contains all sufficiently large real numbers.