大多数数字都不正常

IF 0.6 3区 数学 Q3 MATHEMATICS
ANDREA AVENI, PAOLO LEONETTI
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引用次数: 0

摘要

我们从拓扑学的观点证明,大多数数在强意义上是不正常的。更准确地说,具有以下性质的数字集$x \in(0,1]$是可聚的:对于所有整数$b\ge 2$和$k\ge 1$,由x的b进表示中长度为k的所有可能字符串的频率组成的向量序列有一个最大的累加点子集,并且每个累加点都是具有非零渐近密度索引集的子序列的极限。这扩展并提供了Olsen(2004)在本刊中给出的主要结果的简化证明。我们在解析p理想和正则矩阵的背景下提供类似物。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Most numbers are not normal

We show, from a topological viewpoint, that most numbers are not normal in a strong sense. More precisely, the set of numbers $x \in (0,1]$ with the following property is comeager: for all integers $b\ge 2$ and $k\ge 1$ , the sequence of vectors made by the frequencies of all possibile strings of length k in the b-adic representation of x has a maximal subset of accumulation points, and each of them is the limit of a subsequence with an index set of nonzero asymptotic density. This extends and provides a streamlined proof of the main result given by Olsen (2004) in this Journal. We provide analogues in the context of analytic P-ideals and regular matrices.

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来源期刊
CiteScore
1.70
自引率
0.00%
发文量
39
审稿时长
6-12 weeks
期刊介绍: Papers which advance knowledge of mathematics, either pure or applied, will be considered by the Editorial Committee. The work must be original and not submitted to another journal.
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