Word.ws English Dictionary

Urysohn's lemma

Urysohn's lemma proper noun: a lemma stating that a topological space is normal if and only if any two disjoint closed subsets can be separated by a continuous function.

Proper noun

Urysohn's lemma

  1. A lemma stating that a topological space is normal if and only if any two disjoint closed subsets can be separated by a continuous function.

Origin of Urysohn's lemma

Named after the mathematician Pavel Samuilovich Urysohn.

Questions about Urysohn's lemma

What does Urysohn's lemma mean?
Urysohn's lemma means a lemma stating that a topological space is normal if and only if any two disjoint closed subsets can be separated by a continuous function.
What part of speech is Urysohn's lemma?
Urysohn's lemma is a proper noun.

Words near Urysohn's lemma in the dictionary

  1. Urvi
  2. urword
  3. urwords
  4. Ury
  5. Uryevick
  6. Urysohn's lemma
  7. urz begee
  8. Urzendowski
  9. Urziceni
  10. Urzua
  11. Urzuas

Source and license

Adapted from Wiktionary: Urysohn's lemma (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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