Somewhere trivial automorphisms
Logic
2016-09-06 v1 General Topology
Abstract
It is shown to be consistent that there is a non-trivial autohomeomorphism of beta N while all such autohomeomorphisms are trivial on some open set. The model used is one due to Velickovic in which, coincidentally, Martin's Axiom also holds.
Keywords
Cite
@article{arxiv.math/9308214,
title = {Somewhere trivial automorphisms},
author = {Saharon Shelah and Juris Steprāns},
journal= {arXiv preprint arXiv:math/9308214},
year = {2016}
}