Reductivity properties over an affine base
Representation Theory
2020-10-12 v2 Algebraic Geometry
Abstract
When the base ring is not a field, power reductivity of a group scheme is a basic notion, intimately tied with finite generation of subrings of invariants. Geometric reductivity is weaker and less pertinent in this context. We give a survey of these properties and their connections.
Cite
@article{arxiv.1910.13749,
title = {Reductivity properties over an affine base},
author = {Wilberd van der Kallen},
journal= {arXiv preprint arXiv:1910.13749},
year = {2020}
}
Comments
6 pages; Dedicated to the memory of T.A. Springer