Research Interests


Online versions of my publications are available here.

I study combinatorics, graph theory and pursuit-evasion games. I am particularly interested in the interplay between randomness and strategy. For example, I have looked at controlling random walks, guiding random graph processes, playing games on random structures, and using randomized algorithms.


Courses at Macalester


I have taught upper level courses in graph theory, combinatorics, optimization, network science and abstract algebra. And, of course, I teach Calculus, discrete math and linear algebra.

Please visit Moodle for all current course materials.

Here are a few Macalester news stories about some of my former honors students.

MAXIMA Summer REU, 2009-2014

Undergraduate Research Experience in Interdisciplinary Mathematics

From 2009 to 2014, Macalester co-hosted a Summer Math REU, along with the Institute for Mathematics and its Applications. I directed this program from 2012 to 2014. The projects came from applications in Engineering and Computer Science. In addition to the obvious mathematical reference, the moniker MAXIMA is an amalgam of the names of the hosting institutions: Macalester (or more familiarly, "Mac") and the IMA.

Each summer, 12-14 undergraduates worked in teams of four on open research problems in applied mathematics. See the MAXIMA website for more information.

MAXIMA is on hiatus for the time being. The IMA is currently on an NSF funding ramp-down. Once the future direction of the IMA has been set, we will look into rebooting the MAXIMA REU.

Here are some Macalester news stories about MAXIMA REU students.


Education and Professional Experience


PhD, Yale University, 1997
BA, Williams College, 1991

I was Eugene Shelly Visiting Assistant Professor and Richard J. Duffin Visiting Assistant Professor in the ACO group at Carnegie Mellon University.

I spent six years working in Silicon Valley as a software engineer and architect. I worked for companies that developed platforms for supply chain management and financial services. I also worked briefly in clinical informatics.

If you want to know a little more, here are a short profile from 2011 and a stream-of-consciousness 2013 interview that appeared in the college paper, the Mac Weekly.