On the Torus quotients of Schubert varieties

نویسندگان

چکیده

In this paper, we consider the GIT quotients of Schubert varieties for action a maximal torus. We describe minuscule which semistable locus is contained in smooth locus. As consequence, study smoothness torus Grassmannian. also prove that quotient any variety homogeneous space [Formula: see text] projectively normal with respect to line bundle and projective space, where parabolic subgroup are associated highest root text].

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

2 00 8 Torus quotients of homogeneous spaces - minimal dimensional Schubert Varieties admitting semi - stable points

In this paper, for any simple, simply connected algebraic group G of type B n , C n or D n and for any maximal parabolic subgroup P of G, we describe all minimal dimensional Schubert varieties in G/P admitting semistable points for the action of a maximal torus T with respect to an ample line bundle on G/P. In this paper, we also describe, for any semi-simple simply connected algebraic group G ...

متن کامل

Multiplicities on Schubert Varieties

We calculate using Macaulay 2 the multiplicities of the most singular point on Schubert varieties on Gl(n)/B for n = 5, 6. The method of computation is described and tables of the results are included.

متن کامل

Torus actions on compact quotients

For a reductive Lie group G and a uniform lattice Γ in G we consider the compact space Γ\G. We fix a maximal torus H in G and consider its action on the compact quotient Γ\G. Assuming H to be noncompact we will prove a Lefschetz formula relating compact orbits as local data to the action of the torus H on a global cohomology theory (tangential cohomology). The compact orbits are parametrized mo...

متن کامل

Permutation Representations on Schubert Varieties

This paper defines and studies permutation representations on the equivariant cohomology of Schubert varieties, as representations both over C and over C[t1, t2, . . . , tn]. We show these group actions are the same as an action studied geometrically by M. Brion, and give topological meaning to the divided difference operators studied by Berstein-Gelfand-Gelfand, Demazure, Kostant-Kumar, and ot...

متن کامل

Orbifold Cohomology of Torus Quotients

We introduce the inertial cohomology ring NH T (Y) of a stably almost complex manifold carrying an action of a torus T . We show that in the case that Y has a locally free action by T , the inertial cohomology ring is isomorphic to the Chen-Ruan orbifold cohomology ring H∗CR(Y/T ) (as defined in [Chen-Ruan]) of the quotient orbifold Y/T . For Y a compact Hamiltonian T -space, we extend to orbif...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Journal of Mathematics

سال: 2021

ISSN: ['1793-6519', '0129-167X']

DOI: https://doi.org/10.1142/s0129167x21500129