English

On a Spector ultrapower of the Solovay model

Logic 2018-08-22 v1

Abstract

We prove that a Spector--like ultrapower extension \gN\gN of a countable Solovay model \gM\gM (where all sets of reals are Lebesgue measurable) is equal to the set of all sets constructible from reals in a generic extension \gM[\al]\gM[\al] where \al\al is a random real over \gM.\gM. The proof involves an almost everywhere uniformization theorem in the Solovay model.

Keywords

Cite

@article{arxiv.math/9502205,
  title  = {On a Spector ultrapower of the Solovay model},
  author = {Vladimir Kanovei and Michiel van Lambalgen},
  journal= {arXiv preprint arXiv:math/9502205},
  year   = {2018}
}