Difference sheaves and torsors
Algebraic Geometry
2020-07-10 v2
Abstract
We develop sheaf theory in the context of difference algebraic geometry. We introduce categories of difference sheaves and develop the appropriate cohomology theories. As specializations, we get difference Galois cohomology, difference Picard group and a good theory of difference torsors.
Cite
@article{arxiv.1912.06886,
title = {Difference sheaves and torsors},
author = {Marcin Chałupnik and Piotr Kowalski},
journal= {arXiv preprint arXiv:1912.06886},
year = {2020}
}