---
tag: 0Q1D85B8G6
kind: concept
name: Interval
msc: [26A03]
sources:
  - url: https://en.wikipedia.org/wiki/Interval_(mathematics)
    locator: lead section
same_as:
  wikidata: Q185148
  wikipedia: Interval (mathematics)
---

## Summary

An interval is a set of real numbers that contains each real number between two of its elements.
Examples are $[0, 1]$, $(0, 1)$, $[0, \infty)$ and $\mathbb{R}$ itself.