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L-functions of Carlitz modules, resultantal varieties and rooted binary trees - I

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Autor(es):
Grishkov, A. ; Logachev, D. ; Zobnin, A.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF NUMBER THEORY; v. 238, p. 44-pg., 2022-05-26.
Resumo

We continue study of some algebraic varieties (called resultantal varieties) started in a paper of A. Grishkov, D. Logachev "Resultantal varieties related to zeroes of L-functions of Carlitz modules". These varieties are related with the Sylvester matrix for the resultant of two polynomials, from one side, and with the L-functions of twisted Carlitz modules, from another side. Surprisingly, these varieties are described in terms of finite weighted rooted binary trees. We give a (conjecturally) complete description of them, we find parametrizations of their irreducible components and their invariants: degrees, multiplicities, Jordan forms, Galois actions. Proof of the fact that this description is really complete is a subject of future research. Maybe a generalization of these results will give us a solution of the problem of boundedness of the analytic rank of twists of Carlitz modules. (C) 2021 Elsevier Inc. All rights reserved. (AU)

Processo FAPESP: 17/19777-6 - T-motivos de Anderson, seus L-funções e reticulados
Beneficiário:Alexandre Grichkov
Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Brasil