On the structure of affine flat group schemes over discrete valuation rings
Algebraic Geometry
2019-05-20 v2
Abstract
We study affine group schemes over a discrete valuation ring using two techniques: Neron blowups and Tannakian categories. We employ the theory developed to define and study differential Galois groups of -modules on a scheme over a . This throws light on how differential Galois groups of families degenerate.
Keywords
Cite
@article{arxiv.1701.06518,
title = {On the structure of affine flat group schemes over discrete valuation rings},
author = {Nguyen Dai Duong and Phung Ho Hai and João Pedro P. dos Santos},
journal= {arXiv preprint arXiv:1701.06518},
year = {2019}
}
Comments
46 pages, final version, accepted for publication in Annali della Scuola Normale Superiore di Pisa, Classe di Scienze