Past Events

Given a graph H, say that a graph G is properly rainbow H-saturated if there exists a rainbow H-free proper edge-colouring of G and, for any non-edge e of G, every proper edge-colouring of G+e contains a rainbow copy of H. The proper rainbow...

The action of the automorphisms of a formal group on its deformation space is crucial to understanding periodic families in the homotopy groups of spheres and the unsolved Hecke orbit conjecture for unitary Shimura varieties. We can explicitly pin...

Moses Schonfinkel invented “combinatory logic” — aka combinatory algebra (CA ) — in 1920. It consisted of a binary operation and two constants S and K (called combinators by Haskell Curry who further investigated CAs in the 1950s) which satisfy just...

The prime number theorem (PNT) gives us the density of primes amongst the natural numbers. We can extend this idea to consider whether we have the asymptotic number of primes predicted by the PNT in a given interval. Currently, this has only been...

In 1992, Erd˝os, Granville, Pomerance, and Spiro conjectured that if A is a set of integers with asymptotic density zero then the preimage of A under s(n), sum-of-proper-divisors function, also has asymptotic density zero. In this talk, we will...

The design of statistical experiments is a classical topic in statistics, dating back to work of Fisher in the 1930s. One of the mathematical objects used to plan experiments is an "orthogonal array", defined by C. R. Rao. In 1947, Rao proved that...

Seven-dimensional, real, Riemannian manifolds with G2 structure have interesting geometric properties. In this talk, I will discuss some of these aspects, and how they are probed by supersymmetric solutions of heterotic string theory.

I will talk about: New efficient algorithms for quantum state tomography (the quantum analogue of estimating a probability distribution). Why you should care about the difference between total variation distance and Hellinger distance and KL...

Humans are affecting the planet in diverse ways. One of those that receives scant attention is the effect that chemicals are having on life. In this talk, I will use data from my lab on a variety of animal models, including invertebrates and...

We describe a new form of diagonalization for linear two point constant coefficient differential operators with arbitrary linear boundary conditions. Although the diagonalization is in a weaker sense than that usually employed to solve initial...