Past Events

Carlsson conjectured that if a finite CW complex admits a free action by an elementary abelian p-group G of rank n, then the sum of its mod-p Betti numbers is at least 2^n. In 2017, Iyengar and Walker constructed equivariant chain complexes that are...

The spring meeting of Oregon Number Theory Days will take place on Saturday, June 1 at Portland State University. This is a triannual number theory seminar rotating between Oregon State University, Portland State University, and the University of...

In this talk, we present an introduction to p-adic numbers and their appearance in number theory. In particular, we give a proof of Ostrowski's theorem.

Cellular movement plays important roles in many (patho)physiological processes, such as immune cell response, growth of neuronal axons and cancer. The regulation of this movement depends on the interaction of several key proteins implicated in the...

First, we review recent experiments on and biophysical modelling approaches for the early stages of osmotically spreading biofilms at an agar-air interface (e.g. [1,2]). Doing so, we highlight important experimental features and successes/limitations...

In an article published in 2009, David Benson described, for a finite group $G$, the mod $p$ homology of the space $\Omega(BG^{\wedge}_p)$ -- the loop space of the $p$-completion of $BG$ -- in purely algebraic terms. In joint work with Carlos Broto...

Tissue growth requires cells of various types to organise themselves into the appropriate patterns and structures to produce viable, functional tissue. Similar processes occur in tissue repair (e.g. wound healing) or in biofilms (communities of...

Cellular organization is regulated by a complex network of interactions between cytoskeletal regulators and the cytoskeleton itself. Here I will utilize mathematical modeling discuss how these complex interactions can give rise to a range of...

A widespread approach for tsunami simulation is to model the ocean with the shallow water equations (SWE). The steady-state ocean floor deformation that results from a seismic event is often used as the initial ocean surface profile for the SWE...

Accurate molecular simulation requires computationally expensive quantum chemistry models that makes simulating complex material phenomena or large molecules intractable. The past decade has seen a revival of interatomic potentials (IPs), which are...