Universiteit van Amsterdam

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Institute for Logic, Language and Computation

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25 October 2019, Set Theory Seminar, Asaf Karagila

Speaker: Asaf Karagila
Title: Stranger Things: The ZF-verse obtained by adding just one Cohen to L
Date: Friday 25 October 2019
Time: 12:00-13:00
Location: ILLC Seminar Room F1.15, Science Park 107, Amsterdam

Abstract

Adding a single Cohen real to L provides us with a lattice of intermediate models, but if we only consider models of ZFC, these models are all somehow very similar (except L itself). Without assuming the Axiom of Choice in those intermediate models we have a very different picture. We will discuss the construction of the Bristol model, which is a model between L and L[c], which does not have the form L(x) for any set x.

For more information, see http://events.illc.uva.nl/settheory/ or contact Benedikt Loewe at .

Please note that this newsitem has been archived, and may contain outdated information or links.