Past Events

A video of this event is available on https://www.mathtube.org The emergence of massive data sets, over the past twenty or so years, has led to the development of Randomized Numerical Linear Algebra. Fast and accurate randomized matrix algorithms are...

We describe various models of creating communities of mathemati- cal explorers, inspired by our work at Illinois and Washington, and earlier work at Maryland. We will outline how we think any Math department can be the center of a vibrant...

In joint work with David Aulicino and Pat Hooper, we study the problem of finding closed geodesics passing through exactly one vertex on the surfaces of Platonic solids. We show that there are no such trajectories on any of the solids except the...

The winter meeting of Oregon Number Theory Days will take place on Saturday, February 16 at Oregon State University, in Corvallis, Oregon. This is a triannual seminar rotating between Oregon State University, Portland State University, and the...

In this talk, we discuss the following question first popularized in the 1980s by the then startling new computer renderings of the Mandelbrot set. Given a rational map from the Riemann sphere to itself, how does the behavior of the map near the...

The deformation space of a rational map is a submanifold of Teichmueller space parameterizing maps that are combinatorially and dynamically equivalent. S. Koch and I recently showed that this space need not be connected, and can have infinitely many...

A video of this event is available on mathtube.org. Given a matrix-valued function F that depend nonlinearly on a single parameter z, the basic nonlinear eigenvalue problem consists of finding complex scalars z for which F(z) is singular. Such...

In this talk I will consider the discrete moments J_k(T) that are defined by summing the 2k-th power of the absolute value of the derivative of the Riemann zeta function zeta(s) at all nontrivial zeros of zeta(s) whose imaginary part has absolute...

A video of this event is available on mathtube.org The so-called Stefan problem describes the temperature distribution in a homogeneous medium undergoing a phase change, for example ice melting to water. An important goal is to describe the structure...

In this talk, I will present two recent studies that respectively revisit the theories of first passage time, and interacting particle process. First, I will analyze a generic planar diffusion process, inspired by neuronal dynamics. The specificity...