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arXiv 0912.4953math.DS
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自由群的几何覆盖变元和遍历定理

Geometric covering arguments and ergodic theorems for free groups

Lewis Bowen, Amos Nevo

摘要:

基于几何覆盖和渐近不变性论证,给出了自由群作用的遍历定理的一种新的证明方法。我们的方法可以被看作是一个直接推广的经典几何覆盖和渐近不变性参数中使用的遍历论顺从的群体。我们使用这种方法来推广现有的最大和逐点遍历定理的自由群行动的一个大类的几何平均,这是以前的技术无法访问。我们的方法的一些应用,其他群体和其他问题的遍历论也简要讨论。

英文摘要:

We present a new approach to the proof of ergodic theorems for actions of free groups based on geometric covering and asymptotic invariance arguments. Our approach can be viewed as a direct generalization of the classical geometric covering and asymptotic invariance arguments used in the ergodic theory of amenable groups. We use this approach to generalize the existing maximal and pointwise ergodic theorems for free group actions to a large class of geometric averages which were not accessible by previous techniques. Some applications of our approach to other groups and other problems in ergodic theory are also briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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