Flexible bundles over rigid affine surfaces
Algebraic Geometry
2013-04-16 v1
Abstract
We construct a smooth rational affine surface S with finite automorphism group but with the property that the group of automorphisms of the cylinder SxA^2 acts infinitely transitively on the complement of a closed subset of codimension at least two. Such a surface S is in particular rigid but not stably rigid with respect to the Makar-Limanov invariant.
Cite
@article{arxiv.1304.4189,
title = {Flexible bundles over rigid affine surfaces},
author = {Adrien Dubouloz},
journal= {arXiv preprint arXiv:1304.4189},
year = {2013}
}