Automorphism groups of Koras-Russell threefolds of the second kind
Algebraic Geometry
2015-07-23 v1
Abstract
We determine the automorphism groups of Koras-Russell threefolds of the second kind. In particular we show that these groups are semi-direct products of two subgroups, one given by the multiplicative group and the other isomorphic to a polynomial ring in two variables with the addition law. We also show that these groups are generated by algebraic subgroups isomorphic to Gm and Ga.
Keywords
Cite
@article{arxiv.1507.06087,
title = {Automorphism groups of Koras-Russell threefolds of the second kind},
author = {Charlie Petitjean},
journal= {arXiv preprint arXiv:1507.06087},
year = {2015}
}