Continuity of Hausdorff dimension across generic dynamical Lagrange and Markov spectra II

Continuity of Hausdorff dimension across generic dynamical Lagrange and Markov spectra II
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通用动态拉格朗日谱和马尔可夫谱 II 上豪斯多夫维数的连续性

DOI:
10.1017/etds.2021.18
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发表时间:
2016
影响因子:
0.9
通讯作者:
Sergio Romaña
Sergio Romaña
中科院分区:
数学2区
文献类型:
--
作者:
A. Cerqueira;C. Moreira;Sergio Romaña

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抽象让 $g_0$ 是完整曲面 N 上的平滑收缩负曲黎曼度量,并让 $\拉姆达_0$ 是测地线流的基本双曲集 $g_0$ 豪斯多夫维数严格小于二。给定一个小的平滑扰动 g $g_0$ 以及 N 相对于 g 的单位切丛上的平滑实值函数 f,令 $L_{g,\Lambda,f}$ (分别 $M_{g,\Lambda,f}$ ) 是双曲延拓中沿测地线 f 渐近最高(相应最高)值的拉格朗日(相应马尔可夫)谱 $\Lambda$ 的 $\拉姆达_0$ 。我们证明,对于 g 和 f 的通用选择,集合的豪斯多夫维数 $L_{g,\Lambda , f}\cap (-\infty , t)$ 连续变化 $t\in \mathbb {R}$ 而且,此外, $M_{g,\Lambda , f}\cap (-\infty , t)$ 具有相同的豪斯多夫维数 $L_{g,\Lambda , f}\cap (-\infty , t)$ 为所有人 $t\in \mathbb {R}$ 。
Abstract Let $g_0$ be a smooth pinched negatively curved Riemannian metric on a complete surface N, and let $\Lambda _0$ be a basic hyperbolic set of the geodesic flow of $g_0$ with Hausdorff dimension strictly smaller than two. Given a small smooth perturbation g of $g_0$ and a smooth real-valued function f on the unit tangent bundle to N with respect to g, let $L_{g,\Lambda ,f}$ (respectively $M_{g,\Lambda ,f}$ ) be the Lagrange (respectively Markov) spectrum of asymptotic highest (respectively highest) values of f along the geodesics in the hyperbolic continuation $\Lambda $ of $\Lambda _0$ . We prove that for generic choices of g and f, the Hausdorff dimensions of the sets $L_{g,\Lambda , f}\cap (-\infty , t)$ vary continuously with $t\in \mathbb {R}$ and, moreover, $M_{g,\Lambda , f}\cap (-\infty , t)$ has the same Hausdorff dimension as $L_{g,\Lambda , f}\cap (-\infty , t)$ for all $t\in \mathbb {R}$ .