English

Reasonable non--Radon--Nikodym ideals

Logic 2018-08-16 v1

Abstract

For any abelian Polish sigma-compact group H there exist a sigma-ideal Z over N and a Borel Z-approximate homomorphism f : H --> H^N which is not Z-approximable by a continuous true homomorphism g : H --> H^N.

Keywords

Cite

@article{arxiv.0806.4760,
  title  = {Reasonable non--Radon--Nikodym ideals},
  author = {Vladimir Kanovei and Vassily Lyubetsky},
  journal= {arXiv preprint arXiv:0806.4760},
  year   = {2018}
}
R2 v1 2026-06-21T10:55:35.154Z