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Some effective estimation in the theory of the Hurwitz-zeta function - MaRDI portal

Some effective estimation in the theory of the Hurwitz-zeta function (Q1902336)

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scientific article; zbMATH DE number 818444
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Some effective estimation in the theory of the Hurwitz-zeta function
scientific article; zbMATH DE number 818444

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    Some effective estimation in the theory of the Hurwitz-zeta function (English)
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    11 September 1996
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    Der Verf. beweist mit Hilfe der bekannten Vinogradovschen Abschätzungsmethode die folgende effektive Abschätzung der Partialsummen von \(\zeta(s, a)\) [vgl. \textit{A. Walfisz}, Weylsche Exponentialsummen in der neueren Zahlentheorie, Math. Forschungsber. 16 (1963; Zbl 0146.06003), Satz 2, S. 57]. Es sei \(0< \alpha\leq 1\), \(s= \sigma+ it\), \(N,M\in \mathbb{N}\), \(N< M\leq 2N\) und \(\exp(\log^{2/3} t)< N\leq t^{1/1000}\). Mit \(\gamma:= 2,003\), \(\delta:= (2309, 525)^{-1}\) gilt dann für \(\alpha> 0\), \(t> \exp(2\cdot 10^9)\), \[ \Biggl|\sum_{N< n\leq M} (n+ \alpha)^{- s}\Biggr|\leq \gamma N^{1- \sigma- \delta(\log N/\log t)^2}. \]
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    Hurwitz-zeta function
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    effective bounds on partial sums
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    Vinogradov estimation method
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