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Uniqueness questions
for $C^*$-norms on group rings
Vadim Alekseev and David Kyed |
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Vol. 298 (2019), No. 2, 257–266
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Abstract |
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We provide a large class of discrete amenable groups for which the complex group ring has several C*-completions, thus providing partial evidence towards a positive answer to a question raised by Rostislav Grigorchuk, Magdalena Musat and Mikael Rørdam. |
Keywords
group rings, C*-norms, the Atiyah conjecture
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Mathematical Subject Classification 2010
Primary: 16S34, 46L05, 46L10
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Milestones
Received: 17 August 2018
Accepted: 27 August 2018
Published: 8 March 2019
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Authors |
| Vadim Alekseev | |
| Institut für Geometrie Fakultät Mathematik Technische Universität Dresden Dresden Germany |
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| David Kyed | |
| Department of Mathematics and
Computer Science University of Southern Denmark Odense Denmark |
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