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Rational torsion points on Jacobians of Shimura curves

Rational torsion points on Jacobians of Shimura curves Let p and q be distinct primes. Consider the Shimura curve Xpq associated to the indefinite quaternion algebra of discriminant pq over Q. Let Jpq be the Jacobian variety of Xpq, which is an abelian variety over Q. For an odd prime ℓ, we provide sufficient conditions for the non‐existence of rational points of order ℓ on Jpq. As an application, we find some non‐trivial subgroups of the kernel of an isogeny from the new quotient J0(pq)new of J0(pq) to Jpq. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Bulletin of the London Mathematical Society Wiley

Rational torsion points on Jacobians of Shimura curves

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References (31)

Publisher
Wiley
Copyright
© London Mathematical Society
ISSN
0024-6093
eISSN
1469-2120
DOI
10.1112/blms/bdv097
Publisher site
See Article on Publisher Site

Abstract

Let p and q be distinct primes. Consider the Shimura curve Xpq associated to the indefinite quaternion algebra of discriminant pq over Q. Let Jpq be the Jacobian variety of Xpq, which is an abelian variety over Q. For an odd prime ℓ, we provide sufficient conditions for the non‐existence of rational points of order ℓ on Jpq. As an application, we find some non‐trivial subgroups of the kernel of an isogeny from the new quotient J0(pq)new of J0(pq) to Jpq.

Journal

Bulletin of the London Mathematical SocietyWiley

Published: Feb 1, 2016

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