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CAGE: Philadelphia Area Combinatorics and Alg. Geometry Seminar

Thursday, February 21, 2019 - 3:00pm

Thomas Lam

University of Michigan


University of Pennsylvania


I will talk about the back stable Schubert calculus of the infinite flag variety.  I will define back stable (double) Schubert polynomials and (double) Stanley symmetric functions and explain a formula that writes back stable Schubert polynomials in terms of Stanley symmetric functions and usual Schubert polynomials.  I will also discuss the related combinatorics of bumpless pipedreams.

This is joint work with Seungjin Lee and Mark Shimozono.