On a theorem of Shapiro
Logic
2008-02-03 v1
Abstract
We show that a theorem of Leonid B. Shapiro which was proved under MA, is actually independent from ZFC. We also give a direct proof of the Boolean algebra version of the theorem under MA(Cohen).
Cite
@article{arxiv.math/9405215,
title = {On a theorem of Shapiro},
author = {Sakaé Fuchino and Saharon Shelah and Lajos Soukup},
journal= {arXiv preprint arXiv:math/9405215},
year = {2008}
}