Gabe Udell "Interpolating between ordinary and bumpless pipe dreams with hybrid pipe dreams"
Channel: Schubert Seminar
Date: 12/12/2022

Abstract: Pipe dreams and bumpless pipe dreams are similar but distinct combinatorial objects which can each be used to compute Schubert polynomials. Recently, Gao and Huang gave a bijection between them, combinatorially proving the equivalence of the two formulas for Schubert polynomials. This talk will discuss hybrid pipe dreams, a new tool for computing Schubert polynomials which generalize both pipe dreams and bumpless pipe dreams. Hybrid pipe dreams provide a new bijective proof of the equivalence of formulas for Schubert polynomials coming from pipe dreams and bumpless pipe dreams.