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arXiv 1004.4200math.DS
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(a,b)-连分数变换的吸引子结构

Structure of attractors for (a,b)-continued fraction transformations

Svetlana Katok, Ilie Ugarcovici

摘要:

本文研究了Don Zagier提出的一维双参数映射族及其相关的(a,b)-连分数.我们证明了相关的自然扩张映射的吸引子具有有限的矩形结构的整个参数集,除了一个康托样集的一维Lebesgue零测度,我们完全描述。我们表明,这些吸引子的结构可以“计算”的数据(a,b),并为一个密集的开放的参数集的约化理论猜想举行,即每一个点被映射到吸引子经过多次迭代。我们还展示了如何将这一理论可以应用到相关的高斯映射的不变测度和遍历性质的研究。

英文摘要:

We study a two-parameter family of one-dimensional maps and related (a,b)-continued fractions suggested for consideration by Don Zagier. We prove that the associated natural extension maps have attractors with finite rectangular structure for the entire parameter set except for a Cantor-like set of one-dimensional Lebesgue zero measure that we completely describe. We show that the structure of these attractors can be "computed" from the data (a,b), and that for a dense open set of parameters the Reduction theory conjecture holds, i.e. every point is mapped to the attractor after finitely many iterations. We also show how this theory can be applied to the study of invariant measures and ergodic properties of the associated Gauss-like maps.

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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