---
tag: 0NSR9V8TED
kind: concept
name: Normal space
aliases: [t4-space]
msc: [54D15]
sources:
  - url: https://en.wikipedia.org/wiki/Normal_space
    locator: lead section
same_as:
  wikidata: Q1071795
  wikipedia: Normal space
---

## Summary

A normal space is a topological space in which any two disjoint closed sets can be put into disjoint open sets.
In normal spaces, there are many continuous real functions, by Urysohn's lemma.