Past Events

A graph is Ramsey if its largest clique or independent set is of size logarithmic in the number of vertices. While almost all graphs are Ramsey, there is still no known explicit construction of Ramsey graphs. We discuss recent progress on finding...

A-homotopy theory is a discrete homotopy theory for graphs. While A-homotopy theory has many of the nice properties of the classical homotopy theory on topological spaces, we would like to know if it also has a nice structure to work with as well. We...

The pandemic placed considerable stress on the critical care system in British Columbia. In this talk, I will present simulation modelling analysis done to support the response to the pandemic and ongoing work to improve the ability of the critical...

Observing a sample of random variables, we wish to decide whether or not some hypothesis about the distribution of the observed sample is correct. A decision procedure for such a problem is called a statistical test of the hypothesis under...

Techniques developed for transcendental number theory have had many surprising applications in the study of purely arithmetic questions. The aim of our talk will be to discuss this phenomenon. Speaker Bio: Cameron L. Stewart is a University Professor...

I give a new explicit bound for the Riemann zeta function on the critical line. This is joint work with Dhir Patel and Andrew Yang. The context of this work highlights the importance of reliability and reproducibility of explicit bounds in analytic...

I will describe the large-scale behavior of a random growth model (Internal DLA) on random planar maps which approximate a random fractal surface embedded in the plane (Liouville quantum gravity, LQG). No prior knowledge of these objects will be...

The Abelian sandpile growth model has a fascinating fractal structure. I will give an overview of what we know on deterministic and random lattices and discuss several open questions. There are connections to circle packings, rational approximation...

Abstract: Elliptic curves are one of the major objects of study in number theory. Over finite fields, their zeta functions were proven to be rational by F. K. Schmidt in 1931. In 1985, R. Schoof devised an algorithm to compute zeta functions of...

This talk will discuss Chern--Schwartz--MacPherson (CSM) classes over classical flag varieties. After a brief introduction to CSM classes, we will explain our main theorem --- an equivariant CSM Pieri and Murnaghan--Nakayama rule which includes as...