À l'occasion de la venue de Sergueï Novikov, un atelier de Topologie aura lieu le dimanche 6 juillet 2008 pm et le lundi 7 juillet tout la journée au laboratoire de Mathématiques Jean Leray à l'Université des sciences de Nantes.

La conférence de Novikov sera dans le cadre d'un colloquium le lundi 7 juillet 2008 à 15h, salle de séminaire.

• Title:

Discrete $GL_n$ Connections and New Discretization of Complex Analysis

• Abstract:

A few years ago new ideas were developped. How to discretize \emph{Diff-geometrical connections}? How to discretize \emph{Complex analysis}?

Our discretization is different from the classical one made for the square lattice. It is based on the ideas borrowed from the theory of completely integrable systems. We are using some remarkable properties of the equilateral triangle lattice in the euclidean plane. At the moment we are working on the extension of these ideas to the equilateral triangle lattice on the hyperbolic (Lobachevsky) plane.

Organisateur : Mr François Laudenbach, du Laboratoire Jean Leray.