Cauchy Formulas and Billey's Formulas for Generalized Grothendieck polynomials

Abstract

We study the generalized double $\beta$-Grothendieck polynomials for all types. We study the Cauchy formulas for them. Using this, we deduce the K-theoretic version of the comodule structure map ${\alpha }^{\ast }:K(G/B)\to K(G)\otimes K(G/B)$ induced by the group action map for reductive group $G$ and its flag variety $G/B$. Furthermore, we give a combinatorial formula to compute the localization of Schubert classes as a generalization of Billey's formula.

a part of master thesis of the author

References in corpus (3)

• Algebraic cobordism
• On Double Schubert and Grothendieck polynomials for Classical Groups
• Comodule Structures, Equivariant Hopf Structures, and Generalized Schubert Polynomials