Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T04:16:59.844Z Has data issue: false hasContentIssue false

Explicit Formulas and Asymptotic Expansions for Certain Mean Square of Hurwitz Zeta-Functions: III

Published online by Cambridge University Press:  04 December 2007

Masanori Katsurada
Affiliation:
Mathematics, Hiyoshi Campus, Keio University Hiyoshi 4–1–1, Kouhoku-ku, Yokohama 223–8521, Japan. E-mail: [email protected]
Kohji Matsumoto
Affiliation:
Graduate School of Mathematics, Nagoya University Chikusa-ku, Nagoya 464–8602, Japan. E-mail: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The main object of this paper is the mean square Ih(s) of higher derivatives of Hurwitz zeta functions ζ(s, α). We shall prove asymptotic formulas for Ih(1/2 + it) as t → +∞ with the coefficients in closed expressions (Theorem 1). We also prove a certain explicit formula for Ih(1/2 + it) (Theorem 2), in which the coefficients are, in a sense, not explicit. However, one merit of this formula is that it contains sufficient information for obtaining the complete asymptotic expansion for Ih(1/2 + it) when h is small. Another merit is that Theorem 1 can be strengthened with the aid of Theorem 2 (see Theorem 3). The fundamental method for the proofs is Atkinson's dissection argument applied to the product ζ(u, α)ζ(v, α) with the independent complex variables u and v.

Type
Research Article
Copyright
© 2002 Kluwer Academic Publishers