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单词 StronglyParacompactSpace
释义

strongly paracompact space


A collectionMathworldPlanetmath 𝒜 of sets is said to be star-finiteif each member of 𝒜meets only finitely many members of 𝒜.

A topological spaceMathworldPlanetmath X is said to be strongly paracompactif every open cover of X has a star-finite open refinement.

A star-finite open cover of a topological spaceis clearly locally finitePlanetmathPlanetmath.Therefore, every strongly paracompact space is paracompact(as the name suggests).

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更新时间:2025/5/5 2:53:33