On extendability to $F_\sigma$ ideals
Logic
2025-01-06 v3
Abstract
Answering in negative a question of M. Hru\v{s}\'ak, we construct a Borel ideal not extendable to any ideal and such that it is not Kat\v{e}tov above the ideal .
Cite
@article{arxiv.2106.13053,
title = {On extendability to $F_\sigma$ ideals},
author = {Adam Kwela},
journal= {arXiv preprint arXiv:2106.13053},
year = {2025}
}