Past Events

We develop a dynamic programming methodology that seeks to maximize investor outcomes over multiple, potentially competing goals (such as upgrading a home, paying college tuition, or maintaining an income stream in retirement), even when financial...

Please note that this event will be rescheduled after UNBC's Faculty Association returns to work. Many systems exhibit a digit bias. For example, the first digit base 10 of the Fibonacci numbers or of 2n equals 1 about 30% of the time; the IRS uses...

Starting from a sequence of positive real numbers (w_n), which we call weights, we construct a tree in a recursive manner: at time 1, the tree has only one vertex. Then at any step n+1, we add a new vertex to the tree and we choose its parent at...

A major challenge in mathematical analysis of infectious diseases is that the epidemic process is usually only partially observed. Although we might be able to identify when an individual became symptomatic, rarely can we observe when infection began...

We will attempt, in a colloquium-like fashion, to introduce the basic concepts of quantum mechanics and functional analysis necessary to derive the connection between twisted equivariant K-theory of a d-1 dimensional torus and quasi-adiabatic...

The classical Erdos-Ko-Rado theorem in extremal combinatorics states the following: Given a family F of k-subsets of an n-set that is "pairwise intersecting" (meaning A \cap B \neq \emptyset for all A,B in F) it follows that F can be no larger than...

In number theory and diophantine geometry, the theory of "heights" is essential in studying finiteness questions. Roughly, they capture the "arithmetic complexity" of the object of study. We give a formula relating various notions of heights of...

Low Mach number equation sets approximate the equations of motion of a compressible fluid by filtering out the sound waves, which allows the system to evolve on the advective rather than the acoustic time scale. Depending on the degree of...

A random nxm matrix gives a random linear transformation from \Z^m to \Z^n (between vectors with integral coordinates). Asking for the probability that such a map is injective is a question of the non-vanishing of determinants. In this talk, we...

Chase-escape is a competitive growth process in which red particles spread to adjacent uncoloured sites while blue particles overtake and kill adjacent red particles. We can think of this model as prey escaping from pursuing predators. If the red...