EVENT DETAILS AND ABSTRACT

Title: A quasisymmetric analogue of Schubert cycles in the flag variety
Speaker: Hunter Spink
Speaker Info: University of Toronto
Brief Description:
Special Note:
Abstract:

(Joint with Philippe Nadeau and Vasu Tewari) We describe a family of polynomial endomorphisms analogous to Schubert divided differences for working with quasisymmetric polynomials, where certain toric Richardson varieties play and “forest polynomials” play the role of Schubert cycles and Schubert polynomials. The operations satisfy the surprising commutation relation $T_iT_j=TjT_{i+1}$ for $i>j$.