Factorial Schur and Grothendieck polynomials from Bott Samelson varieties
arXiv:2109.10483
Abstract
We use Bott-Samelson resolutions of Schubert varieties in Grassmannians along with equiariant localization techniques to show that the factorial Schur functions and the factorial Grothendieck polynomials represent Schubert classes in equivariant cohomology and equivariant K-theory respectively.
24 pages, second version fixes some typos