Non-universality of the Riemann zeta function and its derivatives when σ≧1

Non-universality of the Riemann zeta function and its derivatives when σ≧1
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当σ≧1时黎曼zeta函数及其导数的非普遍性

DOI:
10.1016/j.jat.2019.01.006
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发表时间:
2019
影响因子:
0.9
通讯作者:
Takashi Nakamura
Takashi Nakamura
中科院分区:
数学3区
文献类型:
--
作者:
Hirofumi Nagoshi;Takashi Nakamura

文献摘要

相似文献

设f(s)为黎曼zeta函数。1911年,玻尔证明了集合{<$(σ+ i τ):σ> 1,τ∈ R}在R中稠密。根据1972年的Voronin稠密性定理,具有不同λ 1,.,λ n∈ R的集合{(<$(σ + i λ 1+ i τ),.,<$(σ+ i λ n+ i τ)):σ≥ 1,τ∈ R}和{(<$(σ + i τ),<$′(σ + i τ),..,<$(n− 1)(σ+ i τ)):σ≥ 1,τ∈ R}在<$n中稠密。根据Voronin的普适性定理,对任意固定的1 scin 2< σ< 1和任意非负整数k,集合{(k)(σ+ i t+ i τ),t∈[a,B].本文证明了集合{<$σ,τ(k):σ≥ 1,τ∈ R}<$C [a,B]在C [a,B]中不是稠密的.
Let ζ (s) be the Riemann zeta function. In 1911, Bohr showed that the set {ζ (σ+ i τ): σ> 1, τ∈ R} is dense in ℂ. By Voronin’s denseness theorems in 1972, the sets {(ζ (σ+ i λ 1+ i τ),…, ζ (σ+ i λ n+ i τ)): σ≥ 1, τ∈ R} with distinct λ 1,…, λ n∈ R and {(ζ (σ+ i τ), ζ′(σ+ i τ),…, ζ (n− 1)(σ+ i τ)): σ≥ 1, τ∈ R} are dense in ℂ n. By Voronin’s universality theorem, for any fixed 1∕ 2< σ< 1 and any non-negative integer k, the set {ζ σ, τ (k): τ∈ R} is dense in C [a, b], where ζ σ, τ (k)(t)≔ ζ (k)(σ+ i t+ i τ), t∈[a, b]. In the present paper, we prove that the set {ζ σ, τ (k): σ≥ 1, τ∈ R}∩ C [a, b] is not dense in C [a, b].