# Contents

## Definition

An topological space is called an Urysohn space if it satisfies the separation axiom $T_{2\tfrac{1}{2}}$ which demands that for very pair of distinct points in the space they have closed neighbourhoods which are disjoint.

## References

Created on April 17, 2017 12:57:58 by Urs Schreiber (92.218.150.85)