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arXiv · 1806.10983

Uniqueness questions for C*-norms on group rings

Vadim Alekseev·David Kyed
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Abstract

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 R{\o}rdam.

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Vadim Alekseev, David Kyed. 2018-06-28. Uniqueness questions for C*-norms on group rings. https://doi.org/10.2140/pjm.2019.298.257

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