Horospherical stacks
Algebraic Geometry
2019-03-19 v3 Representation Theory
Abstract
We prove structure theorems for algebraic stacks with a reductive group action and a dense open substack isomorphic to a horospherical homogeneous space, and thereby obtain new examples of algebraic stacks which are global quotient stacks. Our results partially generalize the work of Fantechi-Mann-Nironi and Geraschenko-Satriano for abstract toric stacks.
Cite
@article{arxiv.1703.00488,
title = {Horospherical stacks},
author = {Ariyan Javanpeykar and Kevin Langlois and Ronan Terpereau},
journal= {arXiv preprint arXiv:1703.00488},
year = {2019}
}
Comments
21 pages. Final version