Ga-actions on affine cones
Algebraic Geometry
2014-01-09 v3
Abstract
We give a criterion of existence of a unipotent group action on the affine cone over a projective variety or, more generally, on the affine quasicone over a variety which is projective over another affine variety.
Cite
@article{arxiv.1212.4249,
title = {Ga-actions on affine cones},
author = {Takashi Kishimoto and Yuri Prokhorov and Mikhail Zaidenberg},
journal= {arXiv preprint arXiv:1212.4249},
year = {2014}
}
Comments
16p. In a formula in the proof of Lemma 2.3, the direct sum was replaced by the usual sum . The authors are grateful to Kevin Langlois for mentioning this inaccuracy