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arXiv 2407.07682math.DS
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通过紧型子移位研究度量平均维数

Metric mean dimension via subshifts of compact type

Gustavo Pessil

AI总结:

该研究针对紧型子移位的度量平均维数展开,证明连续映射与其逆极限的度量平均维数一致以推广Bowen熵公式,还将该概念扩展至不连续映射,并验证了Gauss映射等的度量平均维数与盒维数、压力算子临界参数的等价性。

摘要:

我们研究了紧型子移位的度量平均维数。我们证明了连续映射与其逆极限的度量平均维数一致,推广了Bowen熵公式。基于这一结果,我们借助合适的子移位将度量平均维数的概念扩展到不连续映射。作为应用,我们表明Gauss映射以及Manneville-Pomeau族诱导映射的度量平均维数,等于对应不连续点集的盒维数,且该值也与几何势相关的压力算子的临界参数一致。

英文摘要:

We investigate the metric mean dimension of subshifts of compact type. We prove that the metric mean dimensions of a continuous map and its inverse limit coincide, generalizing Bowen's entropy formula. Building upon this result, we extend the notion of metric mean dimension to discontinuous maps in terms of suitable subshifts. As an application, we show that the metric mean dimension of the Gauss map and that of induced maps of the Manneville-Pomeau family is equal to the box dimension of the corresponding set of discontinuity points, which also coincides with a critical parameter of the pressure operator associated to the geometric potential.

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