A counterexample to the equivariance structure on semiuniversal deformation
Abstract
If $X$ is a projective variety and $G$ is an algebraic group acting algebraically on $X$, we provide a counterexample to the existence of a $G$equivariant extension on the formal semiuniversal deformation of $X$.
 Publication:

arXiv eprints
 Pub Date:
 May 2019
 arXiv:
 arXiv:1906.00082
 Bibcode:
 2019arXiv190600082K
 Keywords:

 Mathematics  Algebraic Geometry;
 14D15;
 14B10;
 13D10
 EPrint:
 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