A counter-example to the equivariance structure on semi-universal deformation
Algebraic Geometry
2021-03-29 v2
Abstract
If is a projective variety and is an algebraic group acting algebraically on , we provide a counter-example to the existence of a -equivariant extension on the formal semi-universal deformation of .
Cite
@article{arxiv.1906.00082,
title = {A counter-example to the equivariance structure on semi-universal deformation},
author = {An Khuong Doan},
journal= {arXiv preprint arXiv:1906.00082},
year = {2021}
}
Comments
13 pages, Remark 1.1, Definition 1.6, Definition 1.7, and Remark 4.1 have been added. A slight change in the proof of Theorem 4.1. To appear in The Journal of Geometric analysis