Applied and Interdisciplinary Mathematics Seminar

University of Michigan

Winter 2004
Friday, April 16, 3:10-4:00pm, 4096 East Hall

A Random Walk Through Sphere Packing, Energy, Numerical Integration, and Some of Their Fascinating Applications

Steven Damelin

Georgia Southern University, Department of Mathematical Sciences


Abstract

The problem of uniformly distributing a large number of points on smooth manifolds of fixed dimension d+1 with d>0 such as the d-sphere, is an interesting and difficult problem with numerous applications. On the circle, the nth roots of unity are an obvious choice. In this talk we will begin by showing how to construct "good" points on d-spheres using finite fields. We will then show how this problem relates to various important concepts in classical and applied analysis such as Riesz energy, t-designs and numerical integration. If time permits, we will briefly discuss some further applications to mathematical biology and combinatorics such as scar defects in biological systems and the construction of positive codes. This talk will be accessible to undergraduate and graduate students.