The # product in combinatorial Hopf algebras
Combinatorics
2011-09-22 v2
Abstract
We show that the # product of binary trees introduced by Aval and Viennot [arXiv:0912.0798] is in fact defined at the level of the free associative algebra, and can be extended to most of the classical combinatorial Hopf algebras.
Cite
@article{arxiv.1007.1901,
title = {The # product in combinatorial Hopf algebras},
author = {Jean-Christophe Aval and Jean-Christophe Novelli and Jean-Yves Thibon},
journal= {arXiv preprint arXiv:1007.1901},
year = {2011}
}
Comments
20 pages