Uniformity in Mordell–Lang for curves - Sorbonne Université
Article Dans Une Revue Annals of Mathematics Année : 2021

Uniformity in Mordell–Lang for curves

Résumé

Consider a smooth, geometrically irreducible, projective curve of genus g ≥ 2 defined over a number field of degree d ≥ 1. It has at most finitely many rational points by the Mordell Conjecture, a theorem of Faltings. We show that the number of rational points is bounded only in terms of g, d, and the Mordell-Weil rank of the curve's Jacobian, thereby answering in the affirmative a question of Mazur. In addition we obtain uniform bounds, in g and d, for the number of geometric torsion points of the Jacobian which lie in the image of an Abel-Jacobi map. Both estimates generalize our previous work for 1-parameter families. Our proof uses Vojta's approach to the Mordell Conjecture, and the key new ingredient is the generalization of a height inequality due to the second-and third-named authors.
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Dates et versions

hal-03374335 , version 1 (12-10-2021)

Identifiants

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Vesselin Dimitrov, Ziyang Gao, Philipp Habegger. Uniformity in Mordell–Lang for curves. Annals of Mathematics, 2021, 194 (1), pp.237-298. ⟨10.4007/annals.2021.194.1.4⟩. ⟨hal-03374335⟩
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