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单词 AlternativeCharacterizationOfFilter
释义

alternative characterization of filter


A collectionMathworldPlanetmath 𝐅 of subsets of a set X is a filter if and only if the following condition is satisfied: For any two subsets A and B of X, it is the case that AB𝐅 if and only if A𝐅 and B𝐅.

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更新时间:2025/5/4 9:34:16