2 papers
math.CO2009
Avalanche polynomials
Robert Cori, Anne Micheli, Dominique Rossin
The avalanche polynomial on a graph captures the distribution of avalanches in the abelian sandpile model. Studied on trees, this polynomial could be defined by simply considering…
math.CO2008
Indecomposable Permutations, Hypermaps and Labeled Dyck Paths
Robert Cori
Hypermaps were introduced as an algebraic tool for the representation of embeddings of graphs on an orientable surface. Recently a bijection was given between hypermaps and indecom…