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Constructing elliptic curves from Galois representations

Published online by Cambridge University Press:  29 August 2018

Andrew Snowden
Affiliation:
Department of Mathematics, University of Michigan, Ann Arbor, MI, USA email asnowden@umich.eduhttp://www-personal.umich.edu/∼asnowden/
Jacob Tsimerman
Affiliation:
Department of Mathematics, University of Toronto, Toronto, CA, Canada email jacobt@math.toronto.eduhttp://www.math.toronto.edu/∼jacobt/

Abstract

Given a non-isotrivial elliptic curve over an arithmetic surface, one obtains a lisse $\ell$-adic sheaf of rank two over the surface. This lisse sheaf has a number of straightforward properties: cyclotomic determinant, finite ramification, rational traces of Frobenius elements, and somewhere not potentially good reduction. We prove that any lisse sheaf of rank two possessing these properties comes from an elliptic curve.

Information

Type
Research Article
Copyright
© The Authors 2018 

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