English

Small-large subgroups of the reals

Logic 2016-06-01 v2

Abstract

We are interested in subgroups of the reals that are small in one and large in another sense. We prove that, in ZFC, there exists a non-meager Lebesgue null subgrooup of R, while it isconsistent there there is no non-null meager subgroup of R.

Cite

@article{arxiv.1605.02261,
  title  = {Small-large subgroups of the reals},
  author = {Andrzej Roslanowski and Saharon Shelah},
  journal= {arXiv preprint arXiv:1605.02261},
  year   = {2016}
}
R2 v1 2026-06-22T13:55:38.642Z