2007 seminar talk: There may be infinitely many near-coherence classes under u<d

Talk held by Heike Mildenberger (KGRC) at the KGRC seminar on 2007-04-19.

Abstract

We show that in the models of u<d from Blass and Shelah there are infinitely many near-coherence classes of ultrafilters, thus answering a question by Banakh and Blass in the negative.

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Kurt Gödel Research Center for Mathematical Logic. Währinger Straße 25, 1090 Wien, Austria. Phone +43-1-4277-50501. Last updated: 2010-12-16, 04:37.