arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.03108math.DS
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关于$\mathbb{T}^2$上高能级正拓扑熵的Tonelli Lagrange系统的注记

A note on Tonelli Lagrangian systems on $\mathbb{T}^2$ with positive topological entropy on high energy level

J. G. Damasceno, J. A. G. Miranda, L. G. Perona

摘要:

本文研究了定义在环面$\mathbb{T}^2=\mathbb{R}^2 / \mathbb{Z}^2$切丛上的Tonelli Lagrange系统的动力学行为。本文证明了当拉格朗日流满足$ E_L^{-1}(c)$中的Kupka-Smale性质(即能量为$ c> c_0(L)$的所有闭轨道都是双曲或椭圆轨道,所有异宿交点都是$E_L^{-1}(c)$上的横截轨道)时,该拉格朗日流具有正的拓扑熵.证明需要使用Aubry-Mather理论中的著名结果。

英文摘要:

In this work we study the dynamical behavior Tonelli Lagrangian systems defined on the tangent bundle of the torus $\mathbb{T}^2=\mathbb{R}^2 / \mathbb{Z}^2$. We prove that the Lagrangian flow restricted to a high energy level $ E_L^{-1}(c)$ (i.e $ c> c_0(L)$) has positive topological entropy if the flow satisfies the Kupka-Smale propriety in $ E_L^{-1}(c)$ (i.e, all closed orbit with energy $c$ are hyperbolic or elliptic and all heteroclinic intersections are transverse on $E_L^{-1}(c)$). The proof requires the use of well-known results in Aubry-Mather's Theory.

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