A common extension of Lindel\"of, H-closed and ccc
General Topology
2020-02-10 v1
Abstract
The inequality has been proved to be true for Lindel\"of spaces (Arhangel'ski\u\i, 1969), -closed spaces (Dow-Porter, 1982) and ccc spaces (Hajnal-Ju\'asz 1967), by quite different arguments. We present a common extension of all these properties which allows us to give a unified proof of these three theorems.
Cite
@article{arxiv.2002.02719,
title = {A common extension of Lindel\"of, H-closed and ccc},
author = {Angelo Bella},
journal= {arXiv preprint arXiv:2002.02719},
year = {2020}
}