Genus two curves with quaternionic multiplication and modular Jacobian
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- by Josep González and Jordi Guàrdia PDF
- Math. Comp. 78 (2009), 575-589 Request permission
Abstract:
We describe a method to determine all the isomorphism classes of principal polarizations of the modular abelian surfaces $A_f$ with quaternionic multiplication attached to a normalized newform $f$ without complex multiplication. We include an example of $A_f$ with quaternionic multiplication for which we find numerically a curve $C$ whose Jacobian is $A_f$ up to numerical approximation, and we prove that it has quaternionic multiplication and is isogenous to $A_f$.References
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Additional Information
- Josep González
- Affiliation: Escola Politècnica Superior d’Engenyeria de Vilanova i la Geltrú, Avda Victor Balaguer s/n, 08800 Vilanova i la Geltrú, Spain
- Email: josepg@ma4.upc.edu
- Jordi Guàrdia
- Affiliation: Escola Politècnica Superior d’Engenyeria de Vilanova i la Geltrú, Avda Victor Balaguer s/n, 08800 Vilanova i la Geltrú, Spain
- MR Author ID: 650818
- Email: guardia@ma4.upc.edu
- Received by editor(s): July 10, 2007
- Published electronically: June 18, 2008
- Additional Notes: The authors were partially supported by MTM2006-15038-C02-02.
- © Copyright 2008
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Math. Comp. 78 (2009), 575-589
- MSC (2000): Primary 11G10, 11G18
- DOI: https://doi.org/10.1090/S0025-5718-08-02165-0
- MathSciNet review: 2448722