Past Events

It has been just over one year and 100 million cases since we first heard of a novel coronavirus with pandemic potential. We are now all far too familiar with epidemic curves and would very much like to see the tail of this one. In this talk, I will...

Given a collection of points S in a metric space and a probability p in (0,1), one can make a random graph by independently joining any pair of points in S that are less than 1 apart by an edge with probability p; and no edge with probability 1-p...

What have I learned about building mathematical communities over the last twenty years, initially in North America and more recently in Africa and South America? What does “belonging” mean to those who are already part of a mathematical community...

Cops and Robber is a well-studied pursuit-evasion game played on graphs. In this talk, I’ll discuss a variation of the game with a new capture condition. Instead of a win for the cop side resulting from at least one of the cops occupying the same...

The optimal transport problem provides a fundamental and quantitative way to measure the distance between probability distributions. Recently, it has been successfully used to analyze the evolutionary dynamics in physics and biology. Motivated by...

The optimal transport problem provides a fundamental and quantitative way to measure the distance between probability distributions. Recently, it has been successfully used to analyze the evolutionary dynamics in physics and biology. Motivated by...

The optimal transport problem provides a fundamental and quantitative way to measure the distance between probability distributions. Recently, it has been successfully used to analyze the evolutionary dynamics in physics and biology. Motivated by...

A discrete quantum walk usually takes place on the arcs of a graph. Each step of the walk consists of two operations - a "coin flip" and an "arc shift". In this talk, we will consider quantum walks where the "arc shift" simply reverses each arc...

Fusion rings are a special class of associative unital rings with nonnegative integer structure constants and a notion of duality. For example, the group ring of a finite group is a fusion ring. We study fusion rings mainly because they arise as...

Any translation surface can be presented as a collection of polygons in the plane with sides identified. By acting linearly on the polygons, we obtain an action of GL(2,R) on moduli spaces of translation surfaces. Recent work of Eskin, Mirzakhani...