Simon Fraser University

Title: Mahler measures in group rings (Lalin) Abstract: We will consider a generalization of the Mahler measure elements in group rings, in terms of the Lueck-Fuglede-Kadison determinant. A natural question is the variation of the Mahler measure when...

Quantum Chromodynamics has been accepted as the theory of the strong interactions for more than thirty years, ever since the discovery of asymptotic freedom by Gross, Politzer and Wilczek, whose work was recognized with the 2004 Nobel Prize. Despite...

Traditional stability concepts for ODE solvers typically deal with linear equations and/or bounds involving inner-product norms only. Modern problems of interest are typically nonlinear and in many casesthe relevant bounds for the problem involve...

Simulation of moving physical interfaces in 3-D is complicated by the need to (1) resolve complex realistic geometries with a spatial discretization, (2) accurately compute evolving physical fields on the discretization, and (3) evolve the...

The impact of waves, both resolved and parameterized, on the general circulation of the atmosphere is essential to the upward extension of atmospheric general circulation models (GCMs) into the stratosphere and mesosphere. Such efforts have lead to a...

There are many algorithms for minimization when the objective function is differentiable or convex, but few options when it is neither. We describe two simple algorithmic approaches for minimization of nonsmooth, nonconvex objectives: BFGS (a new...

In today's product development and engineering process, usage of computer aided design (CAD) platform is an obvious choice. It allows creating of quite realistic models, precisely describing not only the geometry of the developed prototype, but also...

Wave propagation phenomena are present and explored in a variety of applications, ranging from medical imaging to radar detection. Those sophisticated applications require accurate modeling in order to optimize the involved procedures. For that...