A 0-dimensional, Lindel\"of space that is not strongly D
General Topology
2019-02-19 v1
Abstract
A topological space is strongly if for any neighbourhood assignment , there is a such that covers and is locally finite in the topology generated by . We prove that implies that there is an space in (hence 0-dimensional, Hausdorff and hereditarily Lindel\"of) which is not strongly . We also show that any space is dually discrete and if additionally, countable sets have Menger closure then is a -space.
Cite
@article{arxiv.1902.06500,
title = {A 0-dimensional, Lindel\"of space that is not strongly D},
author = {Daniel T. Soukup and Paul J. Szeptycki},
journal= {arXiv preprint arXiv:1902.06500},
year = {2019}
}
Comments
14 pages, 1 figure, sumitted to Topology and its Applications