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1 paper

math.QA1998

A characterization of depth 2 subfactors of II_1 factors

D. Nikshych, L. Vainerman

We characterize finite index depth 2 inclusions of type II_1 factors in terms of actions of weak Kac algebras and weak C*-Hopf algebras. If N\subset M \subset M_1 \subset M_2 \subs…