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Resolvability vs. almost resolvability
Authors:István Juhász  Saharon Shelah
Institution:a Alfréd Rényi Institute of Mathematics, Realtanoda u. 13-15, Budapest, Hungary
b Hebrew University, Israel
Abstract:A space X is κ-resolvable (resp. almost κ-resolvable) if it contains κ dense sets that are pairwise disjoint (resp. almost disjoint over the ideal of nowhere dense subsets of X).Answering a problem raised by Juhász, Soukup, and Szentmiklóssy, and improving a consistency result of Comfort and Hu, we prove, in ZFC, that for every infinite cardinal κ there is an almost κ2-resolvable but not ω1-resolvable space of dispersion character κ.
Keywords:54A25  03E05
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