English

Convergence of measures after adding a real

Logic 2022-12-07 v3 Functional Analysis General Topology

Abstract

We prove that if A\mathcal{A} is an infinite Boolean algebra in the ground model VV and P\mathbb{P} is a notion of forcing adding any of the following reals: a Cohen real, an unsplit real, or a random real, then, in any P\mathbb{P}-generic extension V[G]V[G], A\mathcal{A} has neither the Nikodym property nor the Grothendieck property. A similar result is also proved for a dominating real and the Nikodym property.

Cite

@article{arxiv.2110.04568,
  title  = {Convergence of measures after adding a real},
  author = {Damian Sobota and Lyubomyr Zdomskyy},
  journal= {arXiv preprint arXiv:2110.04568},
  year   = {2022}
}

Comments

extended and corrected version, 24 pages

R2 v1 2026-06-24T06:45:40.732Z