Urysohn's lemma
Definitions
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.
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
See also
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