Professor of Mathematics, University of Kansas
Director of Graduate Studies, Department of Mathematics
Section Chief Editor, Frontiers for Young Minds, Understanding Mathematics
Department of Mathematics
University of Kansas
405 Snow Hall
1460 Jayhawk Boulevard
Lawrence, KS 66045-7594
The best way to contact me: send e-mail to
Office hours for Spring 2021: TBA
Office: 618 Snow (I am rarely there)
Phone: (785) 864-7114 (email strongly preferred)
Department fax: (785) 864-5255
Teaching | Research | Mathematics Links | Fun Stuff
I am the Section Editor of the Understanding Mathematics section of Frontiers for Young Minds, an open-access journal with articles written by scientists and reviewed by kids. We are looking for help at all levels: editors, authors, science mentors, and of course kids to review and read articles!
I am a co-organizer of the Jayhawk Math Teachers' Circle.
UPDATE: JMTC is on hold indefinitely due to the coronavirus outbreak.
My main focus of research is algebraic combinatorics. I also am interested in areas of mathematics including algebraic geometry, discrete geometry, commutative algebra, and algebraic topology. I especially like topics in which these fields intersect: simplicial and cell complexes, configuration varieties, Coxeter groups, hyperplane arrangements, Stanley-Reisner theory, matroids, Gröbner bases, and combinatorial Hopf algebras and monoids. I am always happy when combinatorial techniques can be used to solve problems from other areas of pure or applied mathematics.