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arXiv 2301.10620math.DSmath.CAmath.PR
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平面上自相似测度的绝对连续性

Absolute continuity of self-similar measures on the plane

Boris Solomyak, Adam Śpiewak

AI总结:

本文证明在超临界区域中,对于几乎所有参数选择,平面上的自相似测度是绝对连续的,推广了已有结果,并给出了随机自相似测度的维数和幂傅里叶衰减的新结论。

摘要:

考虑一个由复平面上相似映射组成的迭代函数系统,其形式为 $g_{i}(z) = λ_i z + t_i,\\ λ_i, t_i \in \mathbb{C},\\ |λ_i|<1, i=1,\ldots, k$。我们证明,在超临界区域中,对于 $(λ_1, \ldots, λ_k)$ 的几乎所有选择(固定平移和概率),相应的自相似测度是绝对连续的。这推广了 Shmerkin-Solomyak(齐次情形)和 Saglietti-Shmerkin-Solomyak(一维非齐次情形)的结果。作为证明的主要步骤,我们获得了平面上随机自相似测度的维数和幂傅里叶衰减的结果,这些结果可能具有独立的意义。

英文摘要:

Consider an iterated function system consisting of similarities on the complex plane of the form $g_{i}(z) = λ_i z + t_i,\ λ_i, t_i \in \mathbb{C},\ |λ_i|<1, i=1,\ldots, k$. We prove that for almost every choice of $(λ_1, \ldots, λ_k)$ in the super-critical region (with fixed translations and probabilities), the corresponding self-similar measure is absolutely continuous. This extends results of Shmerkin-Solomyak (in the homogenous case) and Saglietti-Shmerkin-Solomyak (in the one-dimensional non-homogeneous case). As the main steps of the proof, we obtain results on the dimension and power Fourier decay of random self-similar measures on the plane, which may be of independent interest.

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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