Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4657849 | Topology and its Applications | 2016 | 11 Pages |
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
Authors
A. Kucharski, Sz. Plewik, V. Valov,