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Analysis Seminar

SPEAKER: Michael Montgomery

TITLE: Spin model subfactors

ABSTRACT: Complex Hadamard matrices generate a class of irreducible hyperfinite subfactors with integer Jones index coming from spin model commuting squares. I will prove a theorem that establishes a criterion implying that these subfactors have infinite depth. I then show that Paley type II and Petrescu's continuous family of Hadamard matrices yield infinite depth subfactors. Furthermore, infinite depth subfactors are a generic feature of continuous families of complex Hadamard matrices. In this talk I will present an outline for the proof of these results.

Wednesday, December 1, 2021 at 2:15pm to 3:15pm

Ayres Hall, 112
1403 Circle Drive, Knoxville, TN 37996

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Vyron Vellis

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