English

Horospherical two-orbit varieties as zero loci

Algebraic Geometry 2020-12-11 v1

Abstract

We present geometric realizations of horospherical two-orbit varieties, by showing that their blow-up along the unique closed-invariant orbit is the zero locus of a general section of a homogeneous vector bundle over some auxiliary variety. As an application, we compute the cohomology ring of the G2G_2-variety, including its quantum version. We also consider the Spin7_7-variety, which deserves a different treatment.

Keywords

Cite

@article{arxiv.2012.05513,
  title  = {Horospherical two-orbit varieties as zero loci},
  author = {Boris Pasquier and Laurent Manivel},
  journal= {arXiv preprint arXiv:2012.05513},
  year   = {2020}
}
R2 v1 2026-06-23T20:51:56.584Z