Global descent obstructions for varieties
Number Theory
2012-05-07 v2 Algebraic Geometry
Abstract
We show how to transport descent obstructions from the category of covers to the category of varieties. We deduce examples of curves having as field of moduli, that admit models over every completion of , but have no model over .
Cite
@article{arxiv.0907.3586,
title = {Global descent obstructions for varieties},
author = {Jean-Marc Couveignes and Emmanuel Hallouin},
journal= {arXiv preprint arXiv:0907.3586},
year = {2012}
}