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paper

Model theory of operator algebras I: Stability

arXiv:0908.2790 · doi:10.1112/blms/bdt014

Abstract

Several authors have considered whether the ultrapower and the relative commutant of a C*-algebra or II_1 factor depend on the choice of the ultrafilter. We settle each of these questions, extending results of Ge-Hadwin and the first author.

15 pages; v3 - some rewriting