Past Events

The Earth is warming and temperature isoclines are shifting. Empirical evidence suggests that shifting speeds of temperature isoclines are accelerating, are elevation- dependent, and that there is annualvariation around the expected location of the...

Abstract: Many results on hypoellipticity of second order operators rely on the assumption that the operator can be written as a sum of squares of vector fields (e.g. Hormander's bracket condition, and Christ's hypoellipticity theorem for infinitely...

Abstract: In the first part of this talk we will discuss several ways, how principal bundles over a manifold can be described. The main two of them are maps from the base manifold into the group’s classifying space and assignments of group elements...

Prof. Brauer had two mathematical careers, the first at U Wisconsin, Madison (1960-96), where he also served as Department Chair, and the second as an emeritus honourary professor at the University of British Columbia. Fred was an active member of...

Abstract: The number of independent sets in the hypercube {0,1}^d was estimated precisely by Korshunov and Sapozhenko in the 1980s and recently refined by Jenssen and Perkins. In this talk we will discuss new results on the number of independent sets...

Abstract: Given square matrices A_1, ..., A_d we can consider random products and the associated (top) Lyapunov exponent. We will consider two applications where the Lyapunov exponent plays an interesting role: firstly to barycentric subdivisions of...

The number of homomorphisms from a graph H to a graph G, denoted by hom(H;G), is the number of maps from V(H) to V(G) that yield a graph homomorphism, i.e., that map every edge of H to an edge of G. Given a fixed collection of finite simple graphs {H...

Mammalian orthoreovirus (reovirus) is naturally an enteric virus that spreads among most mammals without causing disease. Reovirus also can infect and kill cancer cells while leaving normal cells unharmed, and is now in phase III clinical trials as a...

Please see the kickoff announcement for a full schedule and details of each talk.