English

Every compact group can have a non-measurable subgroup

Group Theory 2015-03-05 v1 General Topology

Abstract

We show that it is consistent with ZFC that every compact group has a non-Haar-measurable subgroup. In addition, we demonstrate a natural construction, and we conjecture that this construction always produces a non-measurable subgroup of a given compact group. We prove that this is so in the Abelian case.

Keywords

Cite

@article{arxiv.1503.01385,
  title  = {Every compact group can have a non-measurable subgroup},
  author = {W. R. Brian and M. W. Mislove},
  journal= {arXiv preprint arXiv:1503.01385},
  year   = {2015}
}

Comments

5 pages

R2 v1 2026-06-22T08:44:26.071Z