Urysohn's lemma
lemma that a topological space is normal iff any 2 disjoint closed subsets can be separated by a continuous function
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Urysohn's lemma
Summary
Urysohn's lemma is a lemma[1]. It draws 75 Wikipedia views per month (lemma category, ranking #12 of 67).[2]
Key Facts
- Urysohn's lemma's image is recorded as Urysohn-function01.svg[3].
- Urysohn's lemma's instance of is recorded as lemma[4].
- Pavel Urysohn is named after Urysohn's lemma[5].
- Urysohn's lemma's Commons category is recorded as Urysohn's lemma[6].
- Urysohn's lemma's Freebase ID is recorded as /m/0d3zw[7].
- Urysohn's lemma's MathWorld ID is recorded as UrysohnsLemma[8].
- Urysohn's lemma's nLab ID is recorded as Urysohn's lemma[9].
- Urysohn's lemma's maintained by WikiProject is recorded as WikiProject Mathematics[10].
- Urysohn's lemma's Microsoft Academic ID is recorded as 59680287[11].
- Urysohn's lemma's Encyclopedia of Mathematics article ID is recorded as Urysohn_lemma[12].
- Urysohn's lemma's Namuwiki ID is recorded as 우리손 보조정리[13].
- Urysohn's lemma's Treccani's Enciclopedia della Matematica ID is recorded as lemma-di-uryson[14].
- Urysohn's lemma's Great Russian Encyclopedia portal ID is recorded as lemma-urysona-c2e3dd[15].
Why It Matters
Urysohn's lemma draws 75 Wikipedia views per month (lemma category, ranking #12 of 67).[2] It has Wikipedia articles in 17 language editions, a strong signal of global cultural recognition.[16] It is known by 4 alternative names across languages and contexts.[17]