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arXiv 2005.05800math.CAmath.NTmath.RA
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关于循环群的谱子集和分块子集的结构

On the structure of spectral and tiling subsets of cyclic groups

Romanos Diogenes Malikiosis

摘要:

本文研究了循环群的谱子集和平铺子集的性质,并着眼于一维谱集猜想,即$\mathbb{R}$的有界可测子集接受指数正交基当且仅当它平移平铺$\mathbb{R}$.这个猜想与它的离散对应猜想有很强的联系,即在每个有限循环群中,一个子集是谱的当且仅当它是一个瓦片。这里介绍的工具是最近在循环群的设置中使用的工具的改进;单位根的零和的结构是贯穿全文的普遍概念,以及整数的平铺子集的结构。我们设法证明了关于$p^mq^n$阶循环群的猜想,当其中一个指数是$\leq6$或当$p^{m-2}<q^4$时,并且还证明了$p_1^mp_2\dotsm p_n$阶循环群的平铺子集是谱的。

英文摘要:

The purpose of this paper is to investigate the properties of spectral and tiling subsets of cyclic groups, with an eye towards the spectral set conjecture in one dimension, which states that a bounded measurable subset of $\mathbb{R}$ accepts an orthogonal basis of exponentials if and only if it tiles $\mathbb{R}$ by translations. This conjecture is strongly connected to its discrete counterpart, namely that in every finite cyclic group, a subset is spectral if and only if it is a tile. The tools presented herein are refinements of recent ones used in the setting of cyclic groups; the structure of vanishing sums of roots of unity is a prevalent notion throughout the text, as well as the structure of tiling subsets of integers. We manage to prove the conjecture for cyclic groups of order $p^mq^n$, when one of the exponents is $\leq6$ or when $p^{m-2}<q^4$, and also prove that a tiling subset of a cyclic group of order $p_1^mp_2\dotsm p_n$ is spectral.

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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