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Families of Semiopen Sets and Their Accompanied Topologies

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Introduction Let (X, U) be a topological space. A set sX is called a semiopen set of U, if there exists u∈U such that usu~-, where u~- expresses the clo sure of u. The family of all semiopen sets of U is called the family of semiopen sets of U, and the topology U an accompanied topology of. The(本文共计4页)......[继续阅读本文]

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