Fernando Rodriguez Villegas
University of Texas at Austin
22 février 2008 de 16 h 00 à 18 h 00 (heure de Montréal/HNE) Sur place
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.
AdresseUdeM, Pav. André-Aisenstadt, 2920, ch. de la Tour, salle 6214