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Topological structures. (English) Zbl 0311.54003
Topol. Structures, Proc. Symp. in Honour of J. de Groot, 1973, 59-122 (1974).

54A05 Topological spaces and generalizations (closure spaces, etc.)
54C10 Special maps on topological spaces (open, closed, perfect, etc.)
54E05 Proximity structures and generalizations
54E15 Uniform structures and generalizations
54D30 Compactness
54B10 Product spaces in general topology
54C20 Extension of maps
54D10 Lower separation axioms (\(T_0\)–\(T_3\), etc.)
54D15 Higher separation axioms (completely regular, normal, perfectly or collectionwise normal, etc.)