English

Mad families and non-meager filters

Logic 2017-01-12 v1

Abstract

We prove the consistency of ZF+DC+"there are no mad families"+"there exists a non-meager filter on ω\omega" relative to ZFC, answering a question of Neeman and Norwood. We also introduce a weaker version of madness, and we strengthen the result from [HwSh:1090] by showing that no such families exist in our model.

Keywords

Cite

@article{arxiv.1701.02806,
  title  = {Mad families and non-meager filters},
  author = {Haim Horowitz and Saharon Shelah},
  journal= {arXiv preprint arXiv:1701.02806},
  year   = {2017}
}