On signs of Fourier coefficients on GL(n)
Number Theory
2025-07-31 v1
Abstract
We study statistical properties of Fourier coefficients of automorphic forms on GL(n). For most Hecke-Maass cusp forms, we give the asymptotic number of nonvanishing coefficients, show that there is a positive proportion of sign changes among them, when these are real, and describe the asymptotic density of these signs. We generalize the results by J\"a\"asaari obtained in the case of self-dual forms of GL(3) and our method moreover circumvents the assumption of the Generalized Ramanujan Conjecture.
Keywords
Cite
@article{arxiv.2507.22718,
title = {On signs of Fourier coefficients on GL(n)},
author = {Didier Lesesvre and Ming Ho Ng and Yingnan Wang},
journal= {arXiv preprint arXiv:2507.22718},
year = {2025}
}
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10 pages