Exchange relations and Frobenius subalgebras

Fuente: arXiv
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Main Authors: Ghosh, Mainak, Palcoux, Sebastien
Format: Preprint
Published: 2025
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_version_ 1866912714995007488
author Ghosh, Mainak
Palcoux, Sebastien
author_facet Ghosh, Mainak
Palcoux, Sebastien
contents Bisch and Jones established a bijection between the intermediate subfactors of an irreducible subfactor and certain idempotents satisfying exchange relations. In this paper, we generalize this result to abelian monoidal categories through Frobenius subalgebras. As an application, we show that certain morphisms on a C*-correspondence arise from intermediate C*-subalgebras if and only if they are averaging operators.
format Preprint
id arxiv_https___arxiv_org_abs_2511_13167
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Exchange relations and Frobenius subalgebras
Ghosh, Mainak
Palcoux, Sebastien
Quantum Algebra
Category Theory
Operator Algebras
Rings and Algebras
18M20, 46L37 (Primary) 18M05, 46L05 (Secondary)
Bisch and Jones established a bijection between the intermediate subfactors of an irreducible subfactor and certain idempotents satisfying exchange relations. In this paper, we generalize this result to abelian monoidal categories through Frobenius subalgebras. As an application, we show that certain morphisms on a C*-correspondence arise from intermediate C*-subalgebras if and only if they are averaging operators.
title Exchange relations and Frobenius subalgebras
topic Quantum Algebra
Category Theory
Operator Algebras
Rings and Algebras
18M20, 46L37 (Primary) 18M05, 46L05 (Secondary)
url https://arxiv.org/abs/2511.13167