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R-Diagonal Elements and Freeness With Amalgamation

Published online by Cambridge University Press:  20 November 2018

Alexandru Nica
Affiliation:
Department of Pure Mathematics University of Waterloo Waterloo, Ontario N2L 3G1, e-mail: anica@math.uwaterloo.ca
Dimitri Shlyakhtenko
Affiliation:
Department of Mathematics University of California at Los Angeles Los Angeles, California 90095-1555 U.S.A., e-mail: shlyakht@math.ucla.edu
Roland Speicher
Affiliation:
Institut für Angewandte Mathematik Universität Heidelberg, Germany
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Abstract

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The concept of $R$ -diagonal element was introduced in [5], and was subsequently found to have applications to several problems in free probability. In this paper we describe a new approach to $R$ -diagonality, which relies on freeness with amalgamation. The class of $R$ -diagonal elements is enlarged to contain examples living in non-tracial $*$ -probability spaces, such as the generalized circular elements of [7].

Keywords

Type
Research Article
Copyright
Copyright © Canadian Mathematical Society 2001

References

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