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Somewhere trivial automorphisms

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.

5 nodes4 linksoverview mapSomewhere trivial automorphisms
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Co-authorshipAuthorshipAuthorshipTopic signalTopic signalWSomewhere trivial automorphismspreprint / 1993ASaharon ShelahResearcherAJuris SteprānsResearcherTmath.LO1661 worksTmath.GN612 works
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Somewhere trivial automorphisms

preprint / 1993

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