On abelian varieties whose torsion is not self-dual

Fuente: arXiv
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Autores principales: Frei, Sarah, Honigs, Katrina, Voight, John
Formato: Preprint
Publicado: 2023
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author Frei, Sarah
Honigs, Katrina
Voight, John
author_facet Frei, Sarah
Honigs, Katrina
Voight, John
contents We construct infinitely many abelian surfaces A defined over the rational numbers such that, for a prime ell <= 7, the ell-torsion subgroup of A is not isomorphic as a Galois module to the ell-torsion subgroup of its dual. We do this by explicitly analyzing the action of the Galois group on the ell-adic Tate module and its reduction modulo ell.
format Preprint
id arxiv_https___arxiv_org_abs_2309_00531
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle On abelian varieties whose torsion is not self-dual
Frei, Sarah
Honigs, Katrina
Voight, John
Number Theory
Algebraic Geometry
We construct infinitely many abelian surfaces A defined over the rational numbers such that, for a prime ell <= 7, the ell-torsion subgroup of A is not isomorphic as a Galois module to the ell-torsion subgroup of its dual. We do this by explicitly analyzing the action of the Galois group on the ell-adic Tate module and its reduction modulo ell.
title On abelian varieties whose torsion is not self-dual
topic Number Theory
Algebraic Geometry
url https://arxiv.org/abs/2309.00531