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arXiv 2201.05661math.DS
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关于不可缩周期轨道和有界偏差

On Non-contractible Periodic Orbits and Bounded Deviations

Xiao-Chuan Liu, Fabio Armando Tal

摘要:

我们提出了一个二分法的表面同胚类的身份。证明了在不存在退化不动点集的情况下,在万有覆叠空间中,提升动力系统的非游荡点的轨道直径存在一致的界,或者映射存在不可收缩的周期点.然后,我们使用这个新工具来表征不具有不可收缩周期点的环面的面积保持同胚的动力学,表明如果不动点集是非退化的,那么要么提升的动力学是一致有界的,要么提升的映射有一个强无理动力学方向。

英文摘要:

We present a dichotomy for surface homeomorphisms in the isotopy class of the identity. We show that, in the absence of a degenerate fixed point set, either there exists a uniform bound on the diameter of orbits of non-wandering points for the lifted dynamics in the universal covering space, or the map has non-contractible periodic points. We then use this new tool to characterize the dynamics of area preserving homeomorphisms of the torus without non-contractible periodic points, showing that if the fixed point set is non-degenerate, then either the lifted dynamics is uniformly bounded, or the lifted map has a single strong irrational dynamical direction.

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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