Number Theory
Rank of elliptic surfaces and base change
[Rang de surfaces elliptiques et changements de base]
Comptes Rendus. Mathématique, Tome 347 (2009) no. 3-4, pp. 129-132.

On étudie les variations du rang des fibres dans une surface elliptique. On montre que si son modèle minimal est Pk2 alors il existe une infinité de fibres avec un rang égal au moins au rang générique augmenté de deux unités.

We study the variations of the rank of fibers of an elliptic surface with minimal model over k isomorphic to Pk2. We show that an infinite number of fibers have rank at least the generic rank plus two.

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DOI : 10.1016/j.crma.2008.12.003
Salgado, Cecilia 1

1 Institut de mathématiques de Jussieu, 175, rue du Chevaleret 75013 Paris, France
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Salgado, Cecilia. Rank of elliptic surfaces and base change. Comptes Rendus. Mathématique, Tome 347 (2009) no. 3-4, pp. 129-132. doi : 10.1016/j.crma.2008.12.003. http://www.numdam.org/articles/10.1016/j.crma.2008.12.003/

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The work in this article had financial support provided by CAPES (Coordenaçao de Aperfeiçoamente de Pessoal de Nivel Superior).