Essential dimension of finite groups in prime characteristic
Group Theory
2018-03-28 v3 Algebraic Geometry
Abstract
Given a finite smooth group scheme over a field of characteristic , we show that the essential dimension of at is when does not divide the order of , and when it does.
Keywords
Cite
@article{arxiv.1801.00089,
title = {Essential dimension of finite groups in prime characteristic},
author = {Zinovy Reichstein and Angelo Vistoli},
journal= {arXiv preprint arXiv:1801.00089},
year = {2018}
}
Comments
7 pages. Added a new proof of a key lemma due to a referee, and made some more minor changes. Accepted for publication in Comptes Rendus Mathematique