More notions of forcing add a Souslin tree
Logic
2019-09-18 v1
Abstract
An -Souslin tree is a complicated combinatorial object whose existence cannot be decided on the grounds of ZFC alone. But 15 years after Tennenbaum and independently Jech devised notions of forcing for introducing such a tree, Shelah proved that already the simplest forcing notion --- Cohen forcing --- adds an -Souslin tree. In this paper, we identify a rather large class of notions of forcing that, assuming a GCH-type assumption, add a -Souslin tree. This class includes Prikry, Magidor and Radin forcing.
Keywords
Cite
@article{arxiv.1607.07033,
title = {More notions of forcing add a Souslin tree},
author = {Ari Meir Brodsky and Assaf Rinot},
journal= {arXiv preprint arXiv:1607.07033},
year = {2019}
}
Comments
15 pages. Submitted