Non-isogenous abelian varieties sharing the same division fields

Author:

Lombardo Davide

Abstract

Two abelian varieties A 1 , A 2 A_1, A_2 over a number field K K are strongly iso-Kummerian if the torsion fields K ( A 1 [ d ] ) K(A_1[d]) and K ( A 2 [ d ] ) K(A_2[d]) coincide for all d 1 d \geq 1 . For all g 4 g \geq 4 we construct geometrically simple, strongly iso-Kummerian g g -dimensional abelian varieties over number fields that are not geometrically isogenous. We also discuss related examples and put significant constraints on any further iso-Kummerian pair.

Funder

Ministero dell’Istruzione, dell’Università e della Ricerca

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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1. Products of hyperelliptic Jacobians with maximal Galois image;Proceedings of the American Mathematical Society;2024-01-26

2. ON THE ESSENTIAL TORSION FINITENESS OF ABELIAN VARIETIES OVER TORSION FIELDS;Nagoya Mathematical Journal;2023-08-24

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