The strong Prikry property
Logic
2017-07-24 v1
Abstract
I isolate a combinatorial property of a poset that I call the strong Prikry property, which implies the existence of an ultrafilter on the complete Boolean algebra of such that one inclusion of the Boolean ultrapower version of the so-called \Bukovsky-Dehornoy phenomenon holds with respect to and . I show that in all cases that were previously studied, and for which it was shown that they come with a canonical iterated ultrapower construction whose limit can be described as a single Boolean ultrapower, the posets in question satisfy this property: Prikry forcing, Magidor forcing and generalized Prikry forcing.
Keywords
Cite
@article{arxiv.1707.06705,
title = {The strong Prikry property},
author = {Gunter Fuchs},
journal= {arXiv preprint arXiv:1707.06705},
year = {2017}
}