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Proceedings of the American Mathematical Society
Proceedings of the American Mathematical Society
ISSN 1088-6826(online) ISSN 0002-9939(print)


Rescalings of free products of II$_1$-factors

Authors: Ken Dykema and Florin Radulescu
Journal: Proc. Amer. Math. Soc. 131 (2003), 1813-1816
MSC (2000): Primary 46L09
Published electronically: October 1, 2002
MathSciNet review: 1955269
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Abstract: We introduce the notation $\mathcal{Q}(1)*\cdots*\mathcal{Q}(n)*L(\mathbf F_r)$ for von Neumann algebra II$_1$-factors where $r$ is allowed to be negative. This notation is defined by rescalings of free products of II$_1$-factors, and is proved to be consistent with known results and natural operations. We also give two statements which we prove are equivalent to isomorphism of free group factors.

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Additional Information

Ken Dykema
Affiliation: Department of Mathematics, Texas A&M University, College Station, Texas 77843–3368

Florin Radulescu
Affiliation: Department of Mathematics, University of Iowa, Iowa City, Iowa 52242–1466

PII: S 0002-9939(02)06749-7
Received by editor(s): April 3, 2001
Received by editor(s) in revised form: January 18, 2002
Published electronically: October 1, 2002
Additional Notes: The first author was partially supported by NSF grant DMS–0070558
The second author was partially supported by NSF grant DMS–9970486. Both authors also thank the Mathematical Sciences Research Institute, where they were engaged in this work. Research at MSRI is supported in part by NSF grant DMS–9701755.
Communicated by: David R. Larson
Article copyright: © Copyright 2002 American Mathematical Society

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