Filter characterizations of 𝐶- and 𝐶*-embeddings

Author:

Green John William

Abstract

A filter F on a space S is completely regular if the complement of each set in F is completely separated from some set in F. A characterization of the Stone-Čech compactification due to Alexandroff is used to establish the following theorem. Suppose K is a subspace of a Tychonoff space S. K is C {C^ \ast } -embedded in S if and only if the trace on K of every maximal completely regular filter on S intersecting K is maximal completely regular on K. A similar characterization of the C-embedded subsets of a Tychonoff space is obtained as are several related results.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

Reference9 articles.

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5. On compactifications of Freudenthal and Wallman;Fan, Ky;Nederl. Akad. Wetensch. Proc. Ser. A. {\bf55} = Indagationes Math.,1952

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