2 Février - 8 Février

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Mardi 3 Février
Heure: 14:00 - 17:00
Lieu: Salle B107, bâtiment B, Université de Villetaneuse
Résumé: Graph polynomials and relations with physics
Description: Adrian Tanasa In the first part of the talk I will introduce the Tuttepolynomial of graphs and explicitly show its relation withpolynomials appearing in the so-called parametric representation ofintegrands canonically associated to graphs in quantum field theory.In the second part of the talk I will show a new proof of thecelebrated property of universality of the Tutte polynomial of graphs(or matroids), proof which does not require the usual edge inductionarguments. Finally, I will present how this proof generalizes for theuniversality property of the Bollobas-Riordan polynomial of ribbongraphs (or embedded graphs).