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A note on cocycle-conjugate endomorphisms of von Neumann algebras

Remus Floricel

math.OAarXiv:math/0306061

Abstract

We show that two cocycle-conjugate endomorphisms of an arbitrary von Neumann algebra that satisfy certain stability conditions are conjugate endomorphisms, when restricted to some specific von Neumann subalgebras. As a consequence of this result, we obtain a new criterion for conjugacy of Powers shift endomorphisms acting on factors of type I∞.

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