Past Events

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...

Consider two finitely generated field extensions K and L of the same transcendence degree over some base field F. Suppose these extensions become isomorphic over F after adjoining some variables. Does this imply that K isalready isomorphic to L over...

Decomposable abelian varieties, and particularly decomposable Jacobians, have a long history; mainly in the form of formulas to compute hyperelliptic integrals in terms of elliptic ones. The first case where one can have a decomposable Jacobian...