Odd moments for the trace of Frobenius and the Sato--Tate conjecture in arithmetic progressions

Fuente: arXiv
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Main Authors: Bringmann, Kathrin, Kane, Ben, Pujahari, Sudhir
Format: Preprint
Published: 2021
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_version_ 1866917698962718720
author Bringmann, Kathrin
Kane, Ben
Pujahari, Sudhir
author_facet Bringmann, Kathrin
Kane, Ben
Pujahari, Sudhir
contents In this paper, we consider the moments of the trace of Frobenius of elliptic curves if the trace is restricted to a fixed arithmetic progression. We determine the asymptotic behavior for the ratio of the $(2k+1)$-th moment to the zeroeth moment as the size of the finite field $\mathbb{F}_{p^r}$ goes to infinity. These results follow from similar asymptotic formulas relating sums and moments of Hurwitz class numbers where the sums are restricted to certain arithmetic progressions. As an application, we prove that the distribution of the trace of Frobenius in arithmetic progressions is equidistributed with respect to the Sato--Tate measure.
format Preprint
id arxiv_https___arxiv_org_abs_2112_08205
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle Odd moments for the trace of Frobenius and the Sato--Tate conjecture in arithmetic progressions
Bringmann, Kathrin
Kane, Ben
Pujahari, Sudhir
Number Theory
11E41, 11F27, 11F37, 11G05
In this paper, we consider the moments of the trace of Frobenius of elliptic curves if the trace is restricted to a fixed arithmetic progression. We determine the asymptotic behavior for the ratio of the $(2k+1)$-th moment to the zeroeth moment as the size of the finite field $\mathbb{F}_{p^r}$ goes to infinity. These results follow from similar asymptotic formulas relating sums and moments of Hurwitz class numbers where the sums are restricted to certain arithmetic progressions. As an application, we prove that the distribution of the trace of Frobenius in arithmetic progressions is equidistributed with respect to the Sato--Tate measure.
title Odd moments for the trace of Frobenius and the Sato--Tate conjecture in arithmetic progressions
topic Number Theory
11E41, 11F27, 11F37, 11G05
url https://arxiv.org/abs/2112.08205