The topological property of the irregular sets on the lengths of basic intervals in beta-expansions

The topological property of the irregular sets on the lengths of basic intervals in beta-expansions
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β-展开中基本区间长度上的不规则集的拓扑性质

DOI:
10.1016/j.jmaa.2016.11.075
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发表时间:
2017
影响因子:
1.3
通讯作者:
Li Bing
Li Bing
中科院分区:
数学3区
文献类型:
--
作者:
Zheng Lixuan;Wu Min;Li Bing

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设β> 1是一个真实的数。一个n阶基本区间是(0,1]中的一组真实的数,它们的β展开式的前n位数相同,其中x∈(0,1],记为In(x),并将In(x)的长度记为|I n(x)|.本文证明了包含点x∈[0,1]且其上极限为− log β ≠ 0的极不规则集|I n(x)|对于每个λ(β)> 0,n等于1+ λ(β)是残差,其中λ(β)是取决于β的常数。
Let β> 1 be a real number. A basic interval of order n is a set of real numbers in (0, 1] having the same first n digits in their β-expansion which contains x∈(0, 1], denote by I n (x) and write the length of I n (x) as| I n (x)|. In this paper, we prove that the extremely irregular set containing points x∈[0, 1] whose upper limit of− log β⁡| I n (x)| n equals to 1+ λ (β) is residual for every λ (β)> 0, where λ (β) is a constant depending on β.