Journée-séminaire de combinatoire

(équipe CALIN du LIPN, université Paris-Nord, Villetaneuse)

Le 19 novembre 2013 à 14h00 en B107, Emily Redelmeier nous parlera de : Cartography on unoriented surfaces, with applications to real and quaternionic random matrices

Résumé : I will discuss the cartographic machinery (encoding of maps on surfaces by permutations) on unoriented surfaces. I will discuss how these appear in calculations with real and quaternionic random matrices, and their connections with other combinatorial objects associated with these objects, such as the hyperoctahedral group and matricial cumulants. I will present some results in asymptotic second-order freeness which may be approached using these objects.


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