Mod p representations on elliptic curves

dc.creatorCalegari, Frank
dc.date2004-06-11
dc.date.accessioned2026-07-07T05:09:11Z
dc.date.available2026-07-07T05:09:11Z
dc.descriptionModular Galois representations into GL_2(F_p) with cyclotomic determinant arise from elliptic curves for p = 2,3,5. We show (by constructing explicit examples) that such elliptic curves cannot be chosen to have conductor as small as possible at all primes other than p. Our proof involves finding all elliptic curves of conductor 85779, a custom computation carried out for us by Cremona. This leads to a counterexample to a conjecture of Lario and Rio. For p > 5, we construct irreducible representations with cyclotomic determinant that do not arise from any elliptic curve over Q.
dc.descriptionsubmitted
dc.identifierhttps://arxiv.org/abs/math/0406244
dc.identifierhttp://arxiv.org/abs/math/0406244
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/71536
dc.subjectNumber Theory
dc.subject11G05
dc.titleMod p representations on elliptic curves
dc.typetext

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