Associate Professor and Director of Graduate Admissions
Department of Mathematics
University of Kansas
405 Snow Hall
1460 Jayhawk Boulevard
Lawrence, KS 66045-7594
Office: 618 Snow
Office hours for Spring 2016: Wednesdays, 2-4pm, or by appointment
Phone: (785) 864-7114
Department fax: (785) 864-5255
The best way to contact me: send e-mail to
I support the Kansas Coalition for a Gun Free Campus, which opposes the legalization of concealed-carry weapons on university campuses. This is my personal opinion and not the official position of KU or the Department of Mathematics, although it is shared by Chancellor Gray-Little, many Distinguished Professors at KU, and the American Association of University Professors.
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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.