Outer Automorphisms on Cuntz Algebras |
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Authors: | Matsumoto, Kengo Tomiyama, Jun |
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Affiliation: | Department of Mathematics, Tokyo Metropolitan University Minami-Ohsawa 1-1, Hachioji-shi, Tokyo 192-03, Japan |
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Abstract: | We prove that if an automorphism on the Cuntz algebra On satisfies(S1) = S1 for one isometry S1 of generators S1, ..., Sn suchthat , , l i n and a complex number with modulus one,then it is outer. In particular, any non trivial automorphismon On leaving one generator fixed is outer. |
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