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arXiv 2101.05910math.NTmath.DSmath.MG
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自相似集附近的有理点

Rational points near self-similar sets

Han Yu

摘要:

本文考虑了自相似集附近有理点的计数问题。令$n\geq 1$为整数。我们将证明,对于$\mathbb{R}^n$上的一些自相似测度,有理点$\mathbb{Q}^n$的集合在本文将介绍的某种意义上是“等分布的”。这意味着可以证明这些措施的非齐次Khinchine收敛型结果。特别地,对于$n=1$和足够大的整数$p,$,上述定理对于中$p$次Cantor测度,即其基$p$展开式没有数位$[(p-1)/2].$的数的集合上的自然Hausdorff测度成立。此外,我们部分地证明了Bugeaud和Durand关于中$p$次Cantor集合的猜想,这也回答了Levesley,Salp和Velani提出的一个问题。我们的方法包括一个精细的自相似措施的傅立叶系数的分析,连同一个Erdens-Kahane型参数。我们还将提供一个数值论证,以表明$p>10^7$是足够的上述结论。事实上,对于上述大多数结论来说,$p\geq 15$已经足够了。

英文摘要:

In this paper, we consider a problem of counting rational points near self-similar sets. Let $n\geq 1$ be an integer. We shall show that for some self-similar measures on $\mathbb{R}^n$, the set of rational points $\mathbb{Q}^n$ is 'equidistributed' in a sense that will be introduced in this paper. This implies that an inhomogeneous Khinchine convergence type result can be proved for those measures. In particular, for $n=1$ and large enough integers $p,$ the above holds for the middle-$p$th Cantor measure, i.e. the natural Hausdorff measure on the set of numbers whose base $p$ expansions do not have digit $[(p-1)/2].$ Furthermore, we partially proved a conjecture of Bugeaud and Durand for the middle-$p$th Cantor set and this also answers a question posed by Levesley, Salp and Velani. Our method includes a fine analysis of the Fourier coefficients of self-similar measures together with an Erdős-Kahane type argument. We will also provide a numerical argument to show that $p>10^7$ is sufficient for the above conclusions. In fact, $p\geq 15$ is already enough for most of the above conclusions.

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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