English

Torus quotients of homogeneous spaces-minimal dimensional Schubert Variety admitting semi-stable points

Representation Theory 2008-07-31 v1 Algebraic Geometry

Abstract

In this paper, for any simple, simply connected algebraic group GG of type Bn,CnB_n,C_n or DnD_n and for any maximal parabolic subgroup PP of GG, we describe all minimal dimensional Schubert varieties in G/PG/P admitting semistable points for the action of a maximal torus TT with respect to an ample line bundle on G/PG/P. In this paper, we also describe, for any semi-simple simply connected algebraic group GG and for any Borel subgroup BB of GG, all Coxeter elements τ\tau for which the Schubert variety X(τ)X(\tau) admits a semistable point for the action of the torus TT with respect to a non-trivial line bundle on G/BG/B.

Keywords

Cite

@article{arxiv.0807.4818,
  title  = {Torus quotients of homogeneous spaces-minimal dimensional Schubert Variety admitting semi-stable points},
  author = {S. S. Kannan and S. K. Pattanayak},
  journal= {arXiv preprint arXiv:0807.4818},
  year   = {2008}
}