On the essential dimension of unipotent algebraic groups
Number Theory
2010-12-15 v1
Abstract
We give an upper bound for the essential dimension of a smooth unipotent algebraic group over an arbitrary field. We also show that over a field which is finitely generated over a perfect field, a smooth unipotent algebraic -group is of essential dimension 0 if and only if it is -split.
Cite
@article{arxiv.1012.2984,
title = {On the essential dimension of unipotent algebraic groups},
author = {Nguyen Duy Tan},
journal= {arXiv preprint arXiv:1012.2984},
year = {2010}
}
Comments
24 pages