Past Events

The many ways to model an infectious disease go from simple predator-prey Lotka-Volterra compartmentalised models to highly dimensional models. These models are also commonly expressed as the solution to a system of deterministic differential...

In this talk, we first introduce the Brumer-Rosen-Zantema exact sequence (BRZ), a four-term sequence related to strongly ambiguous ideal classes in finite Galois extensions of number fields. Then, using BRZ, we obtain some known cohomological results...

A deformation quantization of a manifold is a noncommutative deformation of its algebra of functions; the idea originated in physics, as a way of relating the classical and quantum descriptions of mechanical systems. At leading order in the...

In this talk we see how representation theory can be used in numerical methods for partial differential equations (PDEs) and how numerics can give more efficient methods for computational problems in representation theory. In particular, we will see...

Pathogens can cause long-term damage to their hosts, leading to potentially elevated mortality after recovery. While such ‘post-infection mortality’ may be widespread, its ecological and evolutionary dynamics remain largely unexplored. In this talk...

In this talk, we start by recalling the well-known problem of multivariate approximation by polynomials of total degree, concerning finding good points for interpolation. This allowed the discovery of the Padua Points, the first set of unisolvent and...

Let X be an algebraic variety defined over a number field K such that the set of K -rational points X ( K ) is Zariski dense in X . For example, we could take X = P N to be projective space. Let f : X → X be a surjective endomorphism of X defined...

Secure online communications and financial transactions depend on public key cryptography—but the methods we use today are susceptible to attack by quantum computers. When that will happen is uncertain, though estimates range from 5 to 25 years. This...

Isogenies between elliptic curves have attracted a lot of attention, and over finite fields the structures that they generate are fascinating. For supersingular primes, isogeny graphs are very connected. For ordinary primes, isogeny graphs have a lot...

An F-decomposition of a graph G is a set of subgraphs of G, each isomorphic to F, whose edge sets partition the edge set of G. I will speak about a result showing that, for each odd k ≥ 5, any graph G of sufficiently large order n with minimum degree...