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Bibliographic Details
Main Authors: Grimmelt, Lasse, Merikoski, Jori
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2505.00489
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author Grimmelt, Lasse
Merikoski, Jori
author_facet Grimmelt, Lasse
Merikoski, Jori
contents We prove a theorem that evaluates weighted averages of sums parametrised by congruence subgroups of $\operatorname{SL}_2(\mathbb{Z})$. In the proof, spectral methods are applied directly to the automorphic kernel instead of going over sums of Kloosterman sums. In number theoretical applications this better preserves the specific symmetries throughout the application of spectral methods. In a separate paper we apply the main theorem to quadratic polynomials and obtain new results about their greatest prime factor and the equidistribution of their roots to prime moduli.
format Preprint
id arxiv_https___arxiv_org_abs_2505_00489
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Weighted averages of $\operatorname{SL}_2(\mathbb{R})$ automorphic kernel, Part I: non-oscillatory functions
Grimmelt, Lasse
Merikoski, Jori
Number Theory
11F72, 11N75
We prove a theorem that evaluates weighted averages of sums parametrised by congruence subgroups of $\operatorname{SL}_2(\mathbb{Z})$. In the proof, spectral methods are applied directly to the automorphic kernel instead of going over sums of Kloosterman sums. In number theoretical applications this better preserves the specific symmetries throughout the application of spectral methods. In a separate paper we apply the main theorem to quadratic polynomials and obtain new results about their greatest prime factor and the equidistribution of their roots to prime moduli.
title Weighted averages of $\operatorname{SL}_2(\mathbb{R})$ automorphic kernel, Part I: non-oscillatory functions
topic Number Theory
11F72, 11N75
url https://arxiv.org/abs/2505.00489