Abstract
We introduce the use of -descent techniques for elliptic surfaces over a perfect field of characteristic not or . Under mild hypotheses, we obtain an upper bound for the rank of a nonconstant elliptic surface. When , this bound is an arithmetic refinement of a well-known geometric bound for the rank deduced from Igusa’s inequality. This answers a question raised by Ulmer. We give some applications to rank bounds for elliptic surfaces over the rational numbers.
Citation
Jean Gillibert. Aaron Levin. "Descent on elliptic surfaces and arithmetic bounds for the Mordell–Weil rank." Algebra Number Theory 16 (2) 311 - 333, 2022. https://doi.org/10.2140/ant.2022.16.311
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