Professor of Mathematics
Missouri State University
Phone: (417) 836-5583
Office: Cheek 20M
Office Hours (in-person with masking or via Zoom): 11am - 12 noon MWF, 10am - 11am TR, or by appointment
My research interests include commutative algebra, group theory,
Teaching: Spring '22
MTH 303: Differential Equations
MTH 314: Discrete Mathematics
MTH 536/636: Theory of Numbers
Polyhedra and Polytopes
Here are some pictures and
movies about three and four-dimensional objects.
CNAS Public Lecture Series Talk
Here is the PowerPoint for my lecture "The Fourth Dimension ...
and Beyond" given September 13, 2011.
Answers to Martin Gardner Puzzles
Here are the problems I posed at the MAA Student
Chapter meeting at Missouri State (February 15, 2007) and their solutions.
Answers to Lewis Carroll Puzzles
Here are the problems
I posed at the Missouri
Section meeting of the MAA (April 17, 1998) and their solutions.
is an approximation of my talk,
"Geometric Methods in Number Theory", given November 5, 1997 at Queen's
Some of my favorite places
American Mathematical Society
Mathematical Association of America
Society of Industrial and Applied Mathematics
Puzzles and Problems
Missouri State University Problem Solving Group
Missouri State University's Problem Corner
Stan Wagon's Macalester College Problem of the Week
Ken Duisenberg's Problem of the Week
Erich Friedman's Stuff
Ed Pegg Jr.'s Math Puzzle of the Week
IBM Research's "Ponder This"
NCTM: Problems of the Week
The Problem Site
Purdue University's Problem of the Week
Nick's Mathematical Miscellany
Tim Sakharov's Interactive Puzzle Solution Center
Michael Brand's "Using your Head is Permitted"
"The Puzzle Toad" at the Carnegie Mellon School of Computer Science
Carlos Rivera's "The Prime Puzzles & Problems Connection"
Project Euler (a series of challenging mathematical/computer programming problems)
(monthly mathematical problems in French)
please write to
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This page is maintained by Les Reid.
Last updated: January 12, 2022