A simple proof of associativity and commutativity of LR-coefficients (or the hive ring)
Combinatorics
2007-05-23 v1
Abstract
We give a simple bijective proof of associativity and commutativity of the Littlewood-Richardson coefficients or the hive ring. Specifically, we establish existence a polarized polymatroidal discretely concave functions on the tetrahedron with given boundary values at two adjoint faces.
Keywords
Cite
@article{arxiv.math/0409447,
title = {A simple proof of associativity and commutativity of LR-coefficients (or the hive ring)},
author = {V. Danilov and G. Koshevoy},
journal= {arXiv preprint arXiv:math/0409447},
year = {2007}
}
Comments
18 pages, 9 figures