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Non-simple abelian varieties in a family: geometric and analytic approaches

  • Autores: Jordan S. Ellenberg, Christian Elsholtz, Chris Hall, Emmanuel Kowalski
  • Localización: Journal of the London Mathematical Society, ISSN 0024-6107, Vol. 80, Nº 1, 2009, págs. 135-154
  • Idioma: inglés
  • DOI: 10.1112/jlms/jdp021
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  • Resumen
    • We consider, in the special case of certain one-parameter families of Jacobians of curves defined over a number field, the problem of how the property that the generic fiber of such a family is absolutely simple �spreads� to other fibers. We show that this question can be approached using arithmetic geometry or with more analytic methods based on sieve theory. In the first setting, non-trivial group-theoretic information is needed, while the version of the sieve we use is also of independent interest.


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