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Spaces of continuous functions, Σ -products and Box Topology

J. AngoaAngel Tamariz-Mascarúa — 2006

Commentationes Mathematicae Universitatis Carolinae

For a Tychonoff space X , we will denote by X 0 the set of its isolated points and X 1 will be equal to X X 0 . The symbol C ( X ) denotes the space of real-valued continuous functions defined on X . κ is the Cartesian product κ with its box topology, and C ( X ) is C ( X ) with the topology inherited from X . By C ^ ( X 1 ) we denote the set { f C ( X 1 ) : f can be continuously extended to all of X } . A space X is almost- ω -resolvable if it can be partitioned by a countable family of subsets in such a way that every non-empty open subset of X has a non-empty...

On ω -resolvable and almost- ω -resolvable spaces

J. AngoaM. IbarraAngel Tamariz-Mascarúa — 2008

Commentationes Mathematicae Universitatis Carolinae

We continue the study of almost- ω -resolvable spaces beginning in A. Tamariz-Mascar’ua, H. Villegas-Rodr’ıguez, , Comment. Math. Univ. Carolin. (2002), no. 4, 687–705. We prove in ZFC: (1) every crowded T 0 space with countable tightness and every T 1 space with π -weight 1 is hereditarily almost- ω -resolvable, (2) every crowded paracompact T 2 space which is the closed preimage of a crowded Fréchet T 2 space in such a way that the crowded part of each fiber is ω -resolvable, has this property too, and (3)...

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