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北美退伍军人节(Veterans Day),12 日无更新
arXiv 2207.06404math.DS
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高亏格面流的动力学和“算法”

Dynamics and 'arithmetics' of higher genus surface flows

Corinna Ulcigrai

摘要:

本文综述了曲面上保面积流的研究进展,特别是光滑保面积流(或局部Hamilton流)的典型动力学、遍历性和谱性质,以及高阶亏格中线性化和刚性问题的最新突破。我们特别关注的丢番图的条件,需要证明这样的结果,这可以被认为是一个推广的算术条件流环面和圆的同态。我们将解释如何通过控制重整化动力学来施加这些条件在更高亏格流及其庞加莱截面(即广义区间交换映射)上,但是这些条件比亏格1更微妙,因为它们经常利用源自重整化的非一致双曲性的特征。

英文摘要:

We survey some recent advances in the study of (area-preserving) flows on surfaces, in particular on the typical dynamical, ergodic and spectral properties of smooth area-preserving (or locally Hamiltonian) flows, as well as recent breakthroughs on linearization and rigidity questions in higher genus. We focus in particular on the Diophantine-like conditions which are required to prove such results, which can be thought of as a generalization of arithmetic conditions for flows on tori and circle diffeomorphisms. We will explain how these conditions on higher genus flows and their Poincare' sections (namely generalized interval exchange maps) can be imposed by controlling a renormalization dynamics, but are of more subtle nature than in genus one since they often exploit features which originate from the non-uniform hyperbolicity of the renormalization.

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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