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Published on: March 18, 2019
Unlikely intersections on the p-adic formal ball
1Mathematics Section, Swiss Federal Institute of Technology Lausanne (EPFL), Station 8, 1015 Lausanne, VD Switzerland.
Abstract:
We investigate generalizations along the lines of the Mordell-Lang conjecture of the author's p-adic formal Manin-Mumford results for n-dimensional p-divisible formal groups . In particular, given a finitely generated subgroup of and a closed subscheme , we show under suitable assumptions that for any points satisfying for some , the minimal such orders n are uniformly bounded whenever X does not contain a formal subgroup translate of positive dimension. In contrast, we then provide counter-examples to a full p-adic formal Mordell-Lang result. Finally, we outline some consequences for the study of the Zariski-density of sets of automorphic objects in p-adic deformations. Specifically, we do so in the context of the nearly ordinary p-adic families of cuspidal cohomological automorphic forms for the general linear group constructed by Hida.
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