Examples of compact quantum groups with $\operatorname{\mathsf{L}^{\!\infty}}(\mathbb{G})$ a factor
Operator Algebras
2024-09-05 v4 Functional Analysis
Abstract
For each we exhibit an uncountable family of compact quantum groups such that the von Neumann algebra is the injective factor of type with separable predual. We also show that uncountably many injective factors of type arise as for some compact quantum group . To distinguish between our examples we introduce invariants related to the scaling group modeled on the Connes invariant for von Neumann algebras and investigate the connection between so obtained invariants of and the Connes invariants , . In the final section we show that factors of type cannot be obtained as for a non-trivial compact quantum group .
Cite
@article{arxiv.2203.10976,
title = {Examples of compact quantum groups with $\operatorname{\mathsf{L}^{\!\infty}}(\mathbb{G})$ a factor},
author = {Jacek Krajczok and Piotr M. Sołtan},
journal= {arXiv preprint arXiv:2203.10976},
year = {2024}
}
Comments
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