Education

Ph.D., 1986, Cornell University, Operations Research

B.S., 1980, Iowa State University, Mathematics
Research

Optimization

Combinatorics
Selected Publications
 Efficient Computation of a Canonical Form for a Generalized PMatrix, to appear in Mathematical Programming.
 Chromatic Numbers of Copoint Graphs of Convex Geometries, (with J. Beagley), Discrete Mathematics 331 (2014), 151157.
 On Minkowski Sums of Simplices, (with G. Agnarsson), Annals of Combinatorics 13 (2009), 271287.
 Finite Sets as Complements of Finite Unions of Convex Sets, (with J. Lawrence), Discrete and Computational Geometry 42 (2009), 206218.
Selected Presentations
 A MihalisinKlee Theorem for Fans, AMS sectional meeting, Washington, DC, March 2015.
 Chromatic Numbers of Copoint Graphs of Convex Geometries, AMS sectional meeting, Ames, Iowa, April 2013.
 Efficient Computation of a Canonical Form for a Generalized PMatrix, AMS sectional meeting, Boulder, Colorado, April 2013.
 Pmatrix Linear Complementarity Problem: Survey of Complexity Results, Dagstuhl Seminar on Equilibrium Computation, April 2010.
