For weakly mixing flows, quasi-simplicity of order 2 implies quasi-simplicity of all orders. A uniformly divisible automorphism and a 2-quasi-simple automorphism are disjoint.
机构:
Aix Marseille Univ, UMR 7373, I2M, CNRS,Cent Marseille, Marseille, France
VA Steklov Math Inst, Moscow 117333, Russia
Inst Informat Transmiss Problems, Moscow, Russia
Natl Res Univ, Higher Sch Econ, Moscow, RussiaUniv Texas Austin, Austin, TX 78712 USA
Bufetov, Alexander
Romaskevich, Olga
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机构:
Natl Res Univ, Higher Sch Econ, Moscow, Russia
Ecole Normale Super Lyon, F-69364 Lyon, FranceUniv Texas Austin, Austin, TX 78712 USA