Upper bounds for the growth of Mordell-Weil ranks in pro-p towers of Jacobians

Details Upper bounds for the growth of Mordell-Weil ranks in pro-p towers of Jacobians Upper bounds for the growth of Mordell-Weil ranks in pro-p towers of Jacobians

2010-01-24

arxiv.org/abs/1001.4266v1

Mathematics

Number Theory

8 pages

Scientific paper

We study the variation of Mordell-Weil ranks in the Jacobians of curves in a pro-p tower over a fixed number field. In particular, we show that under mild conditions the Mordell-Weil rank of a Jacobian in the tower is bounded above by a constant multiple of its dimension. In the case of the tower of Fermat curves, we show that the constant can be taken arbitrarily close to 1. The main result is used in the forthcoming paper of Guillermo Mantilla-Soler on the Mordell-Weil rank of the modular Jacobian J(Np^m).

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