Fibrations et conjecture de Tate
classification
🧮 math.NT
math.AG
keywords
conjectureresultstateactingauthorsaveragingbehaviourcontributions
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We describe the behaviour of the rank of the Mordell-Weil group of the Picard variety of the generic fibre of a fibration in terms of local contributions given by averaging traces of Frobenius acting on the fibres. The results give a reinterpretation of Tate's conjecture (for divisors) and generalises previous results of Nagao, Rosen-Silverman and the authors.
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