Signed puzzles for Schubert coefficients
Combinatorics
2025-04-25 v1
Abstract
We give a signed puzzle rule to compute Schubert coefficients. The rule is based on a careful analysis of Knutson's recurrence arXiv:math/0306304. We use the rule to prove polynomiality of the sums of Schubert coefficients with bounded number of inversions.
Cite
@article{arxiv.2504.17734,
title = {Signed puzzles for Schubert coefficients},
author = {Igor Pak and Colleen Robichaux},
journal= {arXiv preprint arXiv:2504.17734},
year = {2025}
}
Comments
15 pages