Tall $F_\sigma$ subideals of tall analytic ideals
Logic
2020-09-30 v1
Abstract
Answering a question of Hru\v{s}\'ak, we show that every analytic tall ideal on contains an tall ideal. We also give an example of an tall ideal without a Borel selector.
Cite
@article{arxiv.2009.13686,
title = {Tall $F_\sigma$ subideals of tall analytic ideals},
author = {Jan Grebík and Zoltán Vidnyánszky},
journal= {arXiv preprint arXiv:2009.13686},
year = {2020}
}