A variant of the Linnik-Sprindzuk theorem for simple zeros of Dirichlet L-functions

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1. Verfasser: Banks, William D.
Format: Preprint
Veröffentlicht: 2024
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author Banks, William D.
author_facet Banks, William D.
contents For a primitive Dirichlet character $X$, a new hypothesis $RH_{sim}^\dagger[X]$ is introduced, which asserts that (1) all simple zeros of $L(s,X)$ in the critical strip are located on the critical line, and (2) these zeros satisfy some specific conditions on their vertical distribution. We show that $RH_{sim}^\dagger[X]$ (for any $X$) is a consequence of the generalized Riemann hypothesis. Assuming only the generalized Lindelöf hypothesis, we show that if $RH_{sim}^\dagger[X]$ holds for one primitive character $X$, then it holds for every such $X$. If this occurs, then for every character $χ$ (primitive or not), all simple zeros of $L(s,χ)$ in the critical strip are located on the critical line. In particular, Siegel zeros cannot exist in this situation.
format Preprint
id arxiv_https___arxiv_org_abs_2410_11605
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle A variant of the Linnik-Sprindzuk theorem for simple zeros of Dirichlet L-functions
Banks, William D.
Number Theory
Primary: 11M06, 11M26, Secondary: 11M20
For a primitive Dirichlet character $X$, a new hypothesis $RH_{sim}^\dagger[X]$ is introduced, which asserts that (1) all simple zeros of $L(s,X)$ in the critical strip are located on the critical line, and (2) these zeros satisfy some specific conditions on their vertical distribution. We show that $RH_{sim}^\dagger[X]$ (for any $X$) is a consequence of the generalized Riemann hypothesis. Assuming only the generalized Lindelöf hypothesis, we show that if $RH_{sim}^\dagger[X]$ holds for one primitive character $X$, then it holds for every such $X$. If this occurs, then for every character $χ$ (primitive or not), all simple zeros of $L(s,χ)$ in the critical strip are located on the critical line. In particular, Siegel zeros cannot exist in this situation.
title A variant of the Linnik-Sprindzuk theorem for simple zeros of Dirichlet L-functions
topic Number Theory
Primary: 11M06, 11M26, Secondary: 11M20
url https://arxiv.org/abs/2410.11605