A note on rank 2 diagonals
General Topology
2018-11-07 v1
Abstract
We solve two questions regarding spaces with a ()-diagonal of rank 2. One is a question of Basile, Bella and Ridderbos regarding weakly Lindel\"of spaces with a -diagonal of rank 2 and the other is a question of Arhangel'skii and Bella asking whether every space with a diagonal of rank 2 and cellularity continuum has cardinality at most continuum.
Cite
@article{arxiv.1811.02386,
title = {A note on rank 2 diagonals},
author = {Angelo Bella and Santi Spadaro},
journal= {arXiv preprint arXiv:1811.02386},
year = {2018}
}