Reducedness of affine Grassmannian slices in type A
arXiv:1611.06775
Abstract
We prove in type A a conjecture which describes the ideal of transversal slices to spherical Schubert varieties in the affine Grassmannian. As a corollary, we prove a modular description (due to Finkelberg-MirkoviÄ) of the spherical Schubert varieties.
12 pages, comments welcome