AI & Computingarticle2026-08-26

Positivstellensatz for C*-tensor categories

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Abstract

We explore semi-pre-C*-algebras in the context of rigid semisimple C*-tensor categories and using techniques from annular representations, we extend Ozawa’s criterion for property (T) in groups to this context.

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View paper (DOI)Open access versionOpenAlexProceedings of the American Mathematical SocietyPublished 2026-08-26

Authors: Kajal Das, Mainak Ghosh, Shamindra Kumar Ghosh