1. Separation axiomIn topology and related fields of mathematics, there are several restrictions that one often makes on the kinds of topological spaces that one wishes to consider. Some of these restrictions are given by the separation axioms. These are sometimes called Tychonoff separation axioms, after Andrey Tychonoff.
Read “Separation axiom” on English Wikipedia
Read “分離公理” on Japanese Wikipedia
Read “Separation axiom” on DBpedia
Read “Separation axiom” on English Wikipedia
Read “分離公理” on Japanese Wikipedia
Read “Separation axiom” on DBpedia
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