Oscillations of Fourier coefficients over the sparse set of integers

Article Type

Research Article

Publication Title

Monatshefte Fur Mathematik

Abstract

Let f∈Sk(Γ0(N)) be a normalized Hecke eigenforms of integral weight k and level N≥1. In the article, we establish the asymptotics of power moment associated to the sequences {λf⊗f⊗f(Q(x̲))}Q∈SD,x̲∈Z2 and {λf⊗sym2f(Q(x̲))}Q∈SD,x̲∈Z2 where SD denotes the set of inequivalent primitive integral positive-definite binary quadratic forms (reduced forms) of fixed discriminant D<0. As a consequence, we prove results concerning the behaviour of sign changes associated to these sequences.

First Page

601

Last Page

623

DOI

10.1007/s00605-024-01989-5

Publication Date

7-1-2024

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