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单词 Pointfinite
释义

point-finite


A collectionMathworldPlanetmath 𝒰 of subsets of a topological spaceMathworldPlanetmath X is said to be point-finite if every point of X lies in only finitely many members of 𝒰.

Compare this to the stronger property of being locally finitePlanetmathPlanetmathPlanetmath.

Point-finiteness is used in the definition of metacompactness.

Titlepoint-finite
Canonical namePointfinite
Date of creation2013-03-22 16:17:02
Last modified on2013-03-22 16:17:02
Owneryark (2760)
Last modified byyark (2760)
Numerical id5
Authoryark (2760)
Entry typeDefinition
Classificationmsc 54A99
Synonympoint finite
Related topicLocallyFinite
Related topicMetacompact
Definespoint finite collection
Definespoint-finite collection
Definespoint finiteness
Definespoint-finiteness
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