No transcendental Brauer-Manin obstructions on abelian varieties
Number Theory
2018-04-27 v3
Abstract
Suppose is a torsor under an abelian variety over a number field. We show that any adelic point of that is orthogonal to the algebraic Brauer group of is orthogonal to the whole Brauer group of . We also show that if there is a Brauer-Manin obstruction to the existence of rational points on , then there is already an obstruction coming from the locally constant Brauer classes. These results had previously been established under the assumption that has finite Tate-Shafarevich group. Our results are unconditional.
Keywords
Cite
@article{arxiv.1711.01541,
title = {No transcendental Brauer-Manin obstructions on abelian varieties},
author = {Brendan Creutz},
journal= {arXiv preprint arXiv:1711.01541},
year = {2018}
}
Comments
v3: Fixed a gap in the proof of Lemma 13, and other minor changes