Tuesday, October 29th, 4pm, Andreas Holmsen will give a “Bézout colloquium” talk in the seminar room of Cermics.
École nationale des ponts et chaussées
CERMICS Bâtiment Coriolis
8 Av. Blaise Pascal, 77420 Champs-sur-Marne
Andreas Holmsen is a professor at KAIST, Daejeon, South Korea. He is an expert in discrete geometry. The presentation will be aimed at a non-specialist scientific audience. It will be followed by light snacks and drinks.
Title. Helly type problems and combinatorial convexity
Abstract. Helly’s theorem on the intersection of convex sets is a basic and important result in discrete geometry with numerous applications and generalizations. In this talk I will discuss some of the major research directions that were motivated by Helly’s theorem, and report on some recent developments in the theory of abstract convexity spaces and the connection with chi-boundedness and graph colorings.