On fields of definition of torsion points of elliptic curves with complex multiplication

For any elliptic curve $E$ defined over the rationals with complex multiplication (CM) and for every prime $p$, we describe the image of the mod $ p$ Galois representation attached to $E$. We deduce information about the field of definition of torsion points of these curves; in particular, we classi...

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Detalles Bibliográficos
Autores: Dieulefait, L. V. (Luis Victor), Gonzalez-Jimenez, Enrique, Jimenez Urroz, Jorge
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2011
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:2445/96600
Acceso en línea:https://hdl.handle.net/2445/96600
Access Level:acceso abierto
Palabra clave:Corbes el·líptiques
Teoria de Galois
Geometria algebraica aritmètica
Grups discontinus
Elliptic curves
Galois theory
Arithmetical algebraic geometry
Discontinuous groups
Descripción
Sumario:For any elliptic curve $E$ defined over the rationals with complex multiplication (CM) and for every prime $p$, we describe the image of the mod $ p$ Galois representation attached to $E$. We deduce information about the field of definition of torsion points of these curves; in particular, we classify all cases where there are torsion points over Galois number fields not containing the field of definition of the CM.