Voronoi summation formulas, oscillations of Riesz sums, and Ramanujan-Guinand and Cohen type identities

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Main Authors: Charge, Shashank, Dixit, Atul
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Published: 2024
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author Charge, Shashank
Dixit, Atul
author_facet Charge, Shashank
Dixit, Atul
contents We derive Vorono\"{\dotlessi} summation formulas for the Liouville function $λ(n)$, the Möbius function $μ(n)$, and for $d^{2}(n)$, where $d(n)$ is the divisor function. The formula for $λ(n)$ requires explicit evaluation of certain infinite series for which the use of the Vinogradov-Korobov zero-free region of the Riemann zeta function is indispensable. Several results of independent interest are obtained as special cases of these formulas. For example, a special case of the one for $μ(n)$ is a famous result of Ramanujan, Hardy, and Littlewood. Cohen type and Ramanujan-Guinand type identities are established for $λ(n)$ and $σ_a(n)σ_b(n)$, where $σ_s(n)$ is the generalized divisor function. As expected, infinite series over the non-trivial zeros of $ζ(s)$ now form an essential part of all of these formulas. A series involving $σ_a(n)σ_b(n)$ and product of modified Bessel functions occurring in one of our identities has appeared in a recent work of Dorigoni and Treilis in string theory. Lastly, we obtain results on oscillations of Riesz sums associated to $λ(n), μ(n)$ and of the error term of Riesz sum of $d^2(n)$ under the assumption of the Riemann Hypothesis, simplicity of the zeros of $ζ(s)$, the Linear Independence conjecture, and a weaker form of the Gonek-Hejhal conjecture.
format Preprint
id arxiv_https___arxiv_org_abs_2410_04506
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Voronoi summation formulas, oscillations of Riesz sums, and Ramanujan-Guinand and Cohen type identities
Charge, Shashank
Dixit, Atul
Number Theory
Classical Analysis and ODEs
Primary 11M06, 11M26, Secondary 33E20
We derive Vorono\"{\dotlessi} summation formulas for the Liouville function $λ(n)$, the Möbius function $μ(n)$, and for $d^{2}(n)$, where $d(n)$ is the divisor function. The formula for $λ(n)$ requires explicit evaluation of certain infinite series for which the use of the Vinogradov-Korobov zero-free region of the Riemann zeta function is indispensable. Several results of independent interest are obtained as special cases of these formulas. For example, a special case of the one for $μ(n)$ is a famous result of Ramanujan, Hardy, and Littlewood. Cohen type and Ramanujan-Guinand type identities are established for $λ(n)$ and $σ_a(n)σ_b(n)$, where $σ_s(n)$ is the generalized divisor function. As expected, infinite series over the non-trivial zeros of $ζ(s)$ now form an essential part of all of these formulas. A series involving $σ_a(n)σ_b(n)$ and product of modified Bessel functions occurring in one of our identities has appeared in a recent work of Dorigoni and Treilis in string theory. Lastly, we obtain results on oscillations of Riesz sums associated to $λ(n), μ(n)$ and of the error term of Riesz sum of $d^2(n)$ under the assumption of the Riemann Hypothesis, simplicity of the zeros of $ζ(s)$, the Linear Independence conjecture, and a weaker form of the Gonek-Hejhal conjecture.
title Voronoi summation formulas, oscillations of Riesz sums, and Ramanujan-Guinand and Cohen type identities
topic Number Theory
Classical Analysis and ODEs
Primary 11M06, 11M26, Secondary 33E20
url https://arxiv.org/abs/2410.04506