100, rue des maths 38610 Gières / GPS : 45.193055, 5.772076 / Directeur : Louis Funar

Guido Lido

Geometric quadratic Chabauty method
Jeudi, 30 Novembre, 2023 - 10:30
Résumé : 

Joint work with Bas Edixhoven. We present a generalization of Chabauty's method, that allows to compute the rational points on curves/Q when the Mordell-Weil rank is strictly smaller than g+s-1, where g is th genus of the curve and s is the rank of the Néron-Severi group of the Jacobian. The main actor in this method is the Poincaré torsor of the Jacobian of the curve, and the method ultimately consists in intersecting the integral points on the Poincaré torsor with an image of the Z_p-points on the curve.

We can also view the method as a way of rephrasing the quadratic Chabauty method by Balakrishnan, Dogra, Muller, Tuitman and Vonk.
Institution de l'orateur : 
Tor Vergata University
Thème de recherche : 
Théorie des nombres
Salle : 
logo uga logo cnrs