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首页> 外文期刊>Discrete and continuous dynamical systems >EXPANSION GROWTH, ENTROPY AND INVARIANT MEASURES OF DISTAL GROUPS AND PSEUDOGROUPS OF HOMEO- AND DIFFEOMORPHISMS
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EXPANSION GROWTH, ENTROPY AND INVARIANT MEASURES OF DISTAL GROUPS AND PSEUDOGROUPS OF HOMEO- AND DIFFEOMORPHISMS

机译:顺势散布和异同散布的远距离群体,假群体的扩展增长,熵和不变量

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摘要

We estimate expansion growth types (in the sense of Egashira) of certain distal groups of homeomorphisms and manifold diffeomorphisms.The estimate implies zero entropy (in the sense of Ghys, Langevin and the author) and existence of invariant measures for such groups. We prove also existence of invariant measures for pseudogroups satisfying some conditions of distality type.
机译:我们估计了同胚异形和流形不等同的某些远端群的扩展增长类型(从Egashira的角度来看),这一估计意味着零熵(从Ghys,Langevin和作者的角度来看)以及这些群体的不变度量的存在。我们还证明了满足远端类型某些条件的伪组的不变测度的存在。

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