Associate Professor and Director of Graduate Admissions
Department of Mathematics
University of Kansas
405 Snow Hall
1460 Jayhawk Boulevard
Lawrence, KS 66045
The best way to contact me: send e-mail to
Office: 623 Snow Hall
Phone: (785) 864-7114
Department fax: (785) 864-5255
Office hours for Spring 2013: Tuesday/Wednesday, 2-3 PM, or by appointment
Teaching | Research | Graduate Admissions | Mathematics Links | Useful Links | Fun Stuff
American Institute of Mathematics Workshop on Generalizations of Chip-Firing and the Critical Group, Palo Alto, July 8-12, 2013
26th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC): Chicago, June 29- July 3, 2014
My research interests include combinatorics, algebraic geometry, discrete geometry, and computational commutative algebra. I especially like topics in which these fields intersect: configuration varieties (such as picture spaces of graphs, and Grassmannian, flag, and Schubert varieties), simplicial complexes, Coxeter groups, hyperplane arrangements, Stanley-Reisner theory, matroids, Gröbner bases, and lately Hopf algebras. I am always happy when combinatorial techniques can be used to solve problems from other areas of pure or applied mathematics.
If you are not a professional mathematician, but you are wondering just what all that is about, here is a more detailed description of my research publications, explained in plain English (perennially under construction). Also of possible interest: my talk entitled "Planes, Hyperplanes and Beyond: Understanding Higher-Dimensional Spaces" at KU Mini College 2012.