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arXiv 2104.02635math.DSmath.CA
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关于多项式增长群作用的定量遍历定理

Quantitative ergodic theorems for actions of groups of polynomial growth

Guixiang Hong, Wei Liu

AI总结:

本文提出了多项式增长群作用的定量遍历定理,通过引入跳跃量,推导出具有指数衰减的上穿不等式,并结合概率论和几何方法进行证明。

摘要:

我们加强了多项式增长群作用的最大遍历定理,使其涉及跳跃量,这是变分或最大遍历定理家族中最尖锐的结果。作为结果,我们在这种设定下推导出定量遍历定理,特别是具有指数衰减的上穿不等式。所采用的思想或技术涉及概率论、非倍增的Calderón-Zygmund理论、近正交性论证以及一些涉及群上球体和立方体的精细几何论证。

英文摘要:

We strengthen the maximal ergodic theorem for actions of groups of polynomial growth to a form involving jump quantity, which is the sharpest result among the family of variational or maximal ergodic theorems. As a consequence, we deduce in this setting the quantitative ergodic theorem, in particular, the upcrossing inequalities with exponential decay. The ideas or techniques involve probability theory, non-doubling Calderón-Zygmund theory, almost orthogonality argument and some delicate geometric argument involving the balls and the cubes on the group equipped with a not necessarily doubling measure.

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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