The CAGE (Combinatorics, Algebra, and Geometry) Seminar: Colleen Robichaux, 23 January 2025


Positivity of Schubert coefficients

Colleen Robichaux (UCLA) | 2025-01-23 at Drexel University, Korman Center, Room 245, at 3:30-4:30 PM

Abstract: Schubert coefficients are nonnegative integers that arise in Algebraic Geometry and play a central role in Algebraic Combinatorics. It is a major open problem whether they have a combinatorial interpretation, i.e., they are in #P. In this talk we discuss the closely related problem of the positivity of Schubert coefficients. We prove a positive rule for this problem based on two standard assumptions.

This is joint work with Igor Pak.


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