Article ID Journal Published Year Pages File Type
4657849 Topology and its Applications 2016 11 Pages PDF
Abstract

Characterizations of skeletally Dugundji spaces and Dugundji spaces are given in terms of club collections, consisting of countable families of co-zero sets. For example, a Tychonoff space X is skeletally Dugundji if and only if there exists an additive c-club on X. Dugundji spaces are characterized by the existence of additive d-clubs.

Related Topics
Physical Sciences and Engineering Mathematics Geometry and Topology
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