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arXiv 2011.12900math.DS
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正对角流的拓扑混合

Topological mixing of positive diagonal flows

Nguyen-Thi Dang

摘要:

设$G$是一个不含紧因子的半单实李群,$ Γ< G$是一个Zebriki稠密离散子群.研究了$Γ\backslash G$上正对角流的拓扑动力学。我们将Hopf坐标推广到$G$的Bruhat-Hopf坐标,给出了估计大类属斜驶元乘积的椭圆部分的框架.通过将Guivarc 'h-Raugi的结果改写到Bruhat-Hopf坐标下,我们将混合规则Weyl室流的非徘徊集的原像在$Γ\backslash G$中划分为100个动力学共轭子集.证明了拓扑混合的一个必要条件,并证明了当Cartan子群的中心化子的单位元的连通分支是交换的时,它是拓扑混合的充分条件。

英文摘要:

Let $G$ be a semi-simple real Lie group without compact factors and $ Γ< G$ a Zariski dense, discrete subgroup. We study the topological dynamics of positive diagonal flows on $Γ\backslash G$. We extend Hopf coordinates to Bruhat-Hopf coordinates of $G$, which gives the framework to estimate the elliptic part of products of large generic loxodromic elements. By rewriting results of Guivarc'h-Raugi into Bruhat-Hopf coordinates, we partition the preimage in $Γ\backslash G$ of the non-wandering set of mixing regular Weyl chamber flows, into finitely many dynamically conjugated subsets. We prove a necessary condition for topological mixing, and when the connected component of the identity of the centralizer of the Cartan subgroup is abelian, we prove it is sufficient.

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