The distributivity numbers of of P(om) /fin and its square
Logic
2016-09-06 v1
Abstract
We show that in a model obtained by forcing with a countable support iteration of length omega_2 of Mathias forcing h(2), the distributivity number of r.o.(P(omega)/fin)^2, is omega_1 but h, the one of P(omega)/fin, is omega_2.
Cite
@article{arxiv.math/9606227,
title = {The distributivity numbers of of P(om) /fin and its square},
author = {Saharon Shelah and Otmar Spinas},
journal= {arXiv preprint arXiv:math/9606227},
year = {2016}
}