Alejandro Poveda: Woodin’s HOD-Dichotomy

Date: Wednesday 27 September 2017

Time: 16:00

Place: Room S-3
Department of Mathematics & Computer Science
University of Barcelona
Gran Via de les Corts Catalanes 585
08007 Barcelona

Speaker: Alejandro Poveda (Universitat de Barcelona)

Title: Woodin’s HOD-Dichotomy

Abstract: We shall give a complete proof of W. H.
Woodin’s remarkable result that if there exists an
extendible cardinal, then either the set-theoretic universe
V is very “close” to HOD (the class of Hereditarily Ordinal
Definable sets), or it is very “far” from it.

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