On first countable, cellular-compact spaces
General Topology
2019-12-19 v3
Abstract
As it was introduced by Tkachuk and Wilson, a topological space is cellular-compact if given any cellular, i.e. disjoint, family of non-empty open subsets of there is a compact subspace such that for each . Answering several questions raised by Tkachuk and Wilson we show that (1) any first countable cellular-compact space is , and so its cardinality is at most ; (2) implies that every first countable and separable cellular-compact space is compact; (3 if there is no -space then any cellular-compact space of countable spread is compact; (4) implies that every point of a compact space of countable spread has a disjoint local -base.
Keywords
Cite
@article{arxiv.1910.14483,
title = {On first countable, cellular-compact spaces},
author = {István Juhász and Lajos Soukup and Zoltán Szentmiklóssy},
journal= {arXiv preprint arXiv:1910.14483},
year = {2019}
}
Comments
new, revised version, 6 pages