Homotopy Obstructions to Rational Points
Algebraic Geometry
2011-10-04 v1 Algebraic Topology
Abstract
In this paper we propose to use a relative variant of the notion of the \'{e}tale homotopy type of an algebraic variety in order to study the existence of rational points on it. In particular, we use an appropriate notion of homotopy fixed points in order to construct obstructions to the local-global principle. The main results in this paper are the connections between these obstructions and the classical obstructions, such as the Brauer-Manin, the \'{e}tale-Brauer and certain descent obstructions. These connections allow one to understand the various classical obstructions in a unified framework.
Cite
@article{arxiv.1110.0164,
title = {Homotopy Obstructions to Rational Points},
author = {Yonatan Harpaz and Tomer M. Schlank},
journal= {arXiv preprint arXiv:1110.0164},
year = {2011}
}
Comments
arXiv admin note: substantial text overlap with arXiv:1002.1423