Dual Schubert polynomials via a Cauchy identity
Combinatorics
2023-12-01 v1
Abstract
We give a combinatorial proof that Postnikov and Stanley's formula for dual Schubert polynomials in terms of weighted chains in Bruhat order is equivalent to a classical Cauchy identity for polynomials. This gives a natural interpretation of Huang and Pylyavskyy's recent insertion algorithms.
Cite
@article{arxiv.2311.18099,
title = {Dual Schubert polynomials via a Cauchy identity},
author = {Zachary Hamaker},
journal= {arXiv preprint arXiv:2311.18099},
year = {2023}
}
Comments
6 pages