Madness and (weak) normality
General Topology
2021-05-12 v3
Abstract
We consider weakenings of normality in -spaces and prove that the existence of a MAD family whose -space is almost-normal is independent of \textsf{ZFC}. We also construct a partly-normal not quasi-normal AD family, answering questions from Garc\'ia-Balan and Szeptycki. We finish by showing that the concepts of almost-normal and strongly -separated AD families are different, even under \textsf{CH}, answering a question from Oliveira-Rodrigues and Santos-Ronchim
Cite
@article{arxiv.2101.01829,
title = {Madness and (weak) normality},
author = {César Corral},
journal= {arXiv preprint arXiv:2101.01829},
year = {2021}
}
Comments
19 pages