English

Zeros of Polynomials in Derivatives of Automorphic $L$-functions

Number Theory 2025-12-30 v1

Abstract

Let Fm\mathfrak{F}_m be the set of all cuspidal automorphic representations of GLm(AQ)\mathrm{GL}_m(\mathbb{A}_{\mathbb{Q}}), and let F(s,π)F(s,\boldsymbol{\pi}) be a polynomial in the derivatives of LL-functions associated with representations πum=1Fm\pi_u \in \cup_{m=1}^{\infty} \mathfrak{F}_m. We establish an asymptotic formula for the number of nontrivial zeros of F(s,π)F(s,\boldsymbol{\pi}) with 0<Im(s)<T0 < \operatorname{Im}(s) < T. We explicitly determine the main term of this formula in terms of the degrees, the ranks, the arithmetic conductors, and the orders of differentiation of the component LL-functions. Furthermore, we show that, under certain conditions, almost all nontrivial zeros of F(s,π)F(s,\boldsymbol{\pi}) lie near the critical line Re(s)=1/2\operatorname{Re}(s)=1/2.

Keywords

Cite

@article{arxiv.2512.22451,
  title  = {Zeros of Polynomials in Derivatives of Automorphic $L$-functions},
  author = {Anji Dong and Nawapan Wattanawanichkul and Alexandru Zaharescu},
  journal= {arXiv preprint arXiv:2512.22451},
  year   = {2025}
}

Comments

29 pages, 1 figure