Weak normality properties in $\Psi$-spaces
General Topology
2020-07-14 v1
Abstract
Almost disjoint families of true cardinality are used to produce an example of a mildly-normal not partly-normal -space and a quasi-normal not almost-normal -space. This is related with a problem posed by Lufti Kalantan where he asks whether there exists a mad family so that the related Mr\'owka-Isbell space is partly-normal. In addition, a consistent example of a Luzin mad family such that its associated -space is quasi-normal is provided.
Keywords
Cite
@article{arxiv.2007.05844,
title = {Weak normality properties in $\Psi$-spaces},
author = {Sergio A and Garcia-Balan and Paul J. Szeptycki},
journal= {arXiv preprint arXiv:2007.05844},
year = {2020}
}
Comments
13 pages