Normal space

 Normal space: A topological space is termed normal if all points are closed sets (the $$T_1$$ assumption), and any two disjoint closed subsets can be separated by disjoint open subsets.

In some definitions, the $$T_1$$ assumption is skipped.

Related terms: normality (the property of a topological space being normal)

Term variations: Variations of normality offers a list.

Primary subject wiki entry: Topospaces:Normal space

Also located at: Normal space, NormalSpace, Mathworld:NormalSpace