Colloque des sciences mathématiques du Québec

22 février 2008 de 16 h 00 à 18 h 00 (heure de Montréal/Miami) Sur place

Combinatorics as geometry

Colloque par Fernando Rodriguez Villegas (University of Texas at Austin)

Ever since Weil we know that counting points of varieties over finite fields yields topological information about them. In this talk I will discuss several examples of this two-way street between combinatorics and geometry involving, in decreasing order of complexity: character varieties parameterizing representations of the fundamental group of a Riemann surface into GL_n, representations of quivers and counting graphs of various sorts.

Adresse

UdeM, Pav. André-Aisenstadt, 2920, ch. de la Tour, salle 6214