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arXiv:math/0409447 [math.CO]AbstractReferencesReviewsResources

A simple proof of associativity and commutativity of LR-coefficients (or the hive ring)

V. Danilov, G. Koshevoy

Published 2004-09-23Version 1

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.

Comments: 18 pages, 9 figures
Categories: math.CO
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