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The partial fraction expansion of coth($\pi$z), due to Euler, is generalized to power series having for coefficients the Riemann zeta function evaluated at certain arithmetic sequences. A further generalization using arbitrary Dirichlet…

Complex Variables · Mathematics 2015-11-17 Claude Henri Picard

We present some novelties on the Riemann zeta function. Using an extended formula created for the polylogarithm in a previous paper, $\mathrm{Li}_{k}(e^{z})$, the zeta function's Dirichlet series is analytically continued from $\Re(k)>1$ to…

Number Theory · Mathematics 2025-04-29 Jose Risomar Sousa

The $\theta=\infty$ conjecture asserts that the mollified second moments of the Riemann zeta function remain bounded for mollifiers of arbitrary polynomial length. We investigate an analogue of this conjecture for automorphic $L$-functions…

Number Theory · Mathematics 2026-05-26 Anji Dong , Nawapan Wattanawanichkul , Alexandru Zaharescu

This research note deals with the evaluation of some generalized beta-type integral operators involving the multi-index Mittag-Leffler function $E_{\epsilon_{i}),(\omega_{i})}(z)$. Further, we derive a new family of beta-type integrals…

Classical Analysis and ODEs · Mathematics 2020-06-16 M. Ali , M. Ghayasuddin , R. B. Paris

We introduce a new generalization of Stirling numbers of the second kind and analyze their properties, including generating functions, integral representations, and recurrence relations. These numbers are used to approximate Riemann zeta…

Number Theory · Mathematics 2025-10-09 Kamel Mezlini , Tahar Moumni , Najib Ouled Azaiez

This article describes a sequence of rational functions which converges locally uniformly to the zeta function. The numerators (and denominators) of these rational functions can be expressed as characteristic polynomials of matrices that…

Number Theory · Mathematics 2019-06-28 Keith Ball

We obtain sharp estimates for a generalized Zalcman coefficient functional with a complex parameter for the Hurwitz class and the Noshiro-Warschawski class of univalent functions as well as for the closed convex hulls of the convex and…

Complex Variables · Mathematics 2018-10-31 Iason Efraimidis , Dragan Vukotić

In this paper we define a symmetric zeta function. We show that it can be analytically continued to a meromorphic function on $\mathbb{C}^3$ with only simple poles at some special hyperplanes. We also calculate the value of a multiple…

Number Theory · Mathematics 2022-06-17 Jiangtao Li

Some identities for the Riemann zeta-function are proved, using properties of the Mellin transform and M\"untz's identity.

Number Theory · Mathematics 2009-05-07 Aleksandar Ivić

Let $f$ be a holomorphic cusp form of weight $k$ with respect to full modular group $SL_2(\mathbb{Z})$ satisfying a normalized Hecke eigenform, $L_f(s)$ the $L$-function attached to the form $f$. Good gave the approximate functional…

Number Theory · Mathematics 2015-01-20 Yoshikatsu Yashiro

The connection between Lefschetz formulae and zeta function is explained. As a particular example the theory of the generalized Selberg zeta function is presented. Applications are given to the theory of Anosov flows and prime geodesic…

Number Theory · Mathematics 2007-05-23 Anton Deitmar

We study the expansions of the completed Riemann zeta function and completed Dirichlet L-functions in Meixner-Pollaczek polynomials. We give the proof of the uniform convergence, the multiplicative structure for the coefficients of these…

Representation Theory · Mathematics 2014-12-04 Hiroto Inoue

By studying the spectral aspects of the fractional part function in a well-known separable Hilbert space, we show, among other things, a rational approximation of the Riemann zeta function and its derivatives valid on every vertical line in…

Number Theory · Mathematics 2022-09-28 Lahoucine Elaissaoui

In this paper we prove that the Generalized Riemann Hypothesis (GRH) for functions in the class $\mathcal{S}^{\sharp\flat}$ containing the Selberg class is equivalent to a certain integral expression of the real part of the generalized Li…

Number Theory · Mathematics 2015-11-17 Kamel Mazhouda , Lejla Smajlović

In article, we explore the secondary zeta function $Z(s)$, which is defined as a generalized zeta type of series over imaginary parts of non-trivial zeros of the Riemann zeta function $\zeta(s)$. This function has been analytically…

Number Theory · Mathematics 2024-04-09 Artur Kawalec

We prove that the zeta-function $\zeta_\Delta$ of the Laplacian $\Delta$ on a self-similar fractals with spectral decimation admits a meromorphic continuation to the whole complex plane. We characterise the poles, compute their residues,…

Spectral Theory · Mathematics 2020-07-27 Gregory Derfel , Peter Grabner , Fritz Vogl

For $0<\alpha, \lambda \leq 1$, the Lerch zeta-function is defined by $L(s;\alpha, \lambda)$$:= \sum_{n=0}^\infty e^{2\pi i\lambda n} (n+\alpha)^{-s}$, where $\sigma>1$. In this paper, we prove joint universality for Lerch zeta-functions…

Number Theory · Mathematics 2015-09-11 Yoonbok Lee , Takashi Nakamura , Łukasz Pańkowski

By employing contour integration the derivation of a generalized double finite series involving the Hurwitz-Lerch zeta function is used to derive closed form formulae in terms of special functions. We use this procedure to find special…

Number Theory · Mathematics 2023-09-08 Robert Reynolds

Generalized Halphen systems are solved in terms of functions that uniformize genus zero Riemann surfaces, with automorphism groups that are commensurable with the modular group. Rational maps relating these functions imply subgroup…

solv-int · Physics 2007-05-23 J. Harnad , J. McKay

In this paper, we consider meromorphic extension of the function \[ \zeta_{h^{\left( r\right) }}\left( s\right) =\sum_{k=1}^{\infty} \frac{h_{k}^{\left( r\right) }}{k^{s}},\text{ }\operatorname{Re}\left( s\right) >r, \] (which we call…

Number Theory · Mathematics 2023-04-11 Mümün Can , Ayhan Dil , Levent Kargın