English

On a question of Grinblat

Logic 2007-05-23 v1

Abstract

We prove the consistency of the following statement: for some kappa<2^{aleph_0}, there is a kappa-complete ideal on kappa such that the Boolean algebra P(kappa)/I is sigma-centered and there are Q-sets of reals.

Keywords

Cite

@article{arxiv.math/9912163,
  title  = {On a question of Grinblat},
  author = {Saharon Shelah},
  journal= {arXiv preprint arXiv:math/9912163},
  year   = {2007}
}
R2 v1 2026-07-22T18:05:54.371Z