| Interests |
Geometrical Packing |
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Combinatorial Geometry |
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Game Theory |
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Graph Theory |
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Computational Complexity |
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| Education |
Ph.D. in Mathematics, Cornell University, 1991 |
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M.S. in Mathematics, Cornell University, 1990 |
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B.S. in Mathematics, Rose-Hulman Institute of Technology, 1987 |
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| Employment |
Associate Professor, Stetson University, 1998-present (Chair, 2000-2003) |
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Assistant Professor, Stetson University , 1992-1998 |
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Acting Assistant Professor, Cornell University, 1991-1992 |
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Instructor, Cornell University, 1990-1991 |
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| Refereed Papers |
Covering Squares with Unit Squares, (with David A. Paterson),
Geombinatorics, Volume XV 3 (2006) 130-137.  
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Hinged Dissection of Polyominoes and Polyforms,
(with Erik Demaine, Martin Demaine, David Eppstein and Greg Frederickson),
Computational Geometry Theory & Applications, Volume 31, 3 (2005) 237-262.  |
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30 Two-Colored Points with No Empty Monochromatic Convex Fourgons,
Geombinatorics, Volume XIV, 2 (2004) 53-54. |
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Partridge Numbers, (with Patrick Hamlyn),
Geombinatorics, Volume XIII 1 (2003) 10-18. |
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Pascal's Triangle and the Boltzmann Distribution (with Tandy Grubbs),
The Chemical Educator, 8 (2003) 116-121. |
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Squares Touching a Constant Number of Other Squares,
Geombinatorics, Volume XII, 2 (2002) 55-60. |
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Constant Neighbor Dihedral Tilings with 15, 32, and 43 Neighbors
(with Berend Jan van der Zwaag),
Geombinatorics, Volume XI, 3 (2002) 74-77. |
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Magic Carpets (with Mike Keith),
Electronic Journal of Integer Sequences, Volume 3, Issue 2 (2000) |
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N-Vex Shapes, Geombinatorics, Volume IX, 4 (2000) 159-163. |
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Heesch Tiles with Surround Numbers 3 and 4,
Geombinatorics, Volume VIII, 4 (1999) 101-103. |
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Packing Unit Squares in Squares: A Survey and New Results,
Electronic Journal of Combinatorics, DS7, 1998, 2000, 2002, 2005 |
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How Many Bridge Auctions? (with Douglas Jungreis),
College Mathematics Journal, 19 (1988) 171-172. |
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| Other Papers |
Cubic is NP-complete, Proceedings of Florida MAA Section Meeting, 2001 |
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What's in a Name?, Math Horizons, p. 35, April 2001 |
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Hinged Dissection of Polyominoes and Polyforms
(with Erik Demaine, Martin Demaine, and David Eppstein),
Proceedings of 11th Canadian Conference on Computational Geometry, 1999 |
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| Preprints |
Sets of Points that are the Vertices of K Non-overlapping N-gons |
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Pearl Puzzles are NP-Complete |
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Corral Puzzles are NP-Complete |
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Pushing Blocks in Gravity is NP-Hard |
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Spiral Galaxies Puzzles are NP-Complete |
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New Bounds for Largest Planar Graphs with Fixed Maximum Degree and Diameter
(with Rob Pratt) |
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| Plenary Talks |
Two Dozen Unsolved Problems in Planar Geometry,
Embry-Riddle Undergraduate Mathematics Conference, 2004  |
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Reptiles, Partridges, and Golden Bees: Tiling Shapes with Similar Copies,
MAA meeting, 2003 |
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| Other Talks |
Tiling Triangular Polyominoes With Two Tiles, Department Seminar, 2006 |
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Minimal Matchstick Graphs With Small Degree Sets, Department Seminar, 2006 |
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A Dozen Unsolved Problems in Geometry,
Department Seminar, 2003 |
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Spiral Galaxies Puzzles are NP-Complete,
Department Seminar, 2002 |
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Triangle Centers, MAA meeting, 2002 |
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Hackenbush: The Simple Truth, QED Seminar, 2001 |
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Cubic is NP-Complete, MAA meeting, 2001 |
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Cubic is NP-Complete,
Department Seminar, 2000 |
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New Bounds on Large Regular Planar Graphs, MAA meeting, 2000 |
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How to Cut a Cake,
Department Seminar, 1999 |
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New Bounds on Large Planar Graphs,
Department Seminar, 1999 |
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Packing Squares, MAA meeting, 1998 |
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Packing Unit Squares in Squares,
Department Seminar, 1997 |
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The Game of Life,
Department Seminar, 1996 |
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Trapezoidal Numbers,
Department Seminar, 1996 |
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Mathematics and Can Stacking, DeLand High School, 1994, 1996 |
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The Marksman Problem,
Department Seminar, 1995 |
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Mathematica and Interactive Statistics, MAA/AMS meetings, 1995 |
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Geometric Dissections, Department Seminar, 1994 |
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StetStat: An Interactive Statistics Package, ICTCM, 1994 |
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The Four Color Theorem, Department Seminar, 1994 |
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| Courses Taught |
Finite Math,
Precalculus,
Business Calculus,
Calculus I,
II and
III,
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Real Analysis I and
II,
Complex Analysis,
Probability,
Statistics,
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Mathematical Modeling,
Game Theory,
Graph Theory,
Senior Research |
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| Mini-Courses |
Multivariable Calculus Using the Harvard Calculus
Consortium Materials, 1995 |
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Teaching Calculus Using Mathematica, 1993 |
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Calculus and Mathematica on the Macintosh, 1993 |
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| Service |
Department Chair, 2000-2003 |
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Acting Department Chair, Summer 1998-2000, 2005, 2006 |
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Admissions Committee, 1994-1997, 2000-2003 (Chair 1996-1997, 2001-2003) |
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Faculty Senate, 1995-1998 |
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Stetson High School Math Contest Organizer, 1995-1999 |
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Math/Computer Science Seminar Organizer, 1994-1999 |
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Mathematical Contest in Modeling Organizer, 1997, 1998 |
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Putnam Examination Organizer, 1992, 1997, 1999, 2003, 2004 |
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Faculty Advisor to QED, 1999-2000, 2004-2005, 2006-present |
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Faculty Advisor to Club Bridge, 2001-present |
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| Other Activities |
Reviewed note, American Mathematical Monthly, 2006 |
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Reviewed article, Electronic Journal of Combinatorics, 2005 |
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Consultant, Volusia County Environmental Health Lab, 2003 |
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Associate Editor, Encyclopedia of Integer Sequences, 2002 |
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Editor, Rose-Hulman Insititute of Technology Undergraduate Mathematics Journal, 1999-present |
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Reviewed textbook, Addison Wesley Longman Publishers, 1999 |
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Field tested Mathematica software as part of NSF grant, 1999 |
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Reviewed article, Electronic Journal of Combinatorics, 1998 |
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Statistical Consultant,
Volusia County Health Services, 1994-1995 |
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Mathematical Consultant, Enigmatix Inc., 1994 |
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Reviewed textbook, John Wiley Publishers, 1994 |
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Reviewed article, PRIMUS, 1993 |
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| Puzzling |
Published puzzles in Brain Games, 2008 |
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Published puzzles in an Indian puzzle magazine, 2008 |
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Contributed 1 problem to U.S. Puzzle Championship, 2007 |
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Published puzzle in Reader's Digest, Apr 2007 |
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Published 3 puzzles on Perplexcity cards, 2006 |
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Contributed 4 problems to U.S. Puzzle Championship, 2006 |
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Contributed 4 problems to U.S. Puzzle Championship, 2005 |
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Contributed 4 problems to U.S. Puzzle Championship, 2004 |
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Contributed 3 problems to U.S. Puzzle Championship, 2003 |
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Contributed 5 problems to U.S. Puzzle Championship, 2002 |
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Contributed 3 problems to U.S. Puzzle Championship, 2001 |
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Contributed 18 problems to World Puzzle Championship, 2000 |
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Contributed 13 problems to U.S. Puzzle Championship, 2000 |
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Published puzzles in Games Magazine, Nov 1999, Feb 200, Apr 2000, Jun 2000,
Aug 2000, Sep 2000, Feb 2001, Mar 2001, Apr 2001, Aug 2001 |
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Published puzzles in World of Puzzles, Aug 2000, Sep 2000 |
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Published puzzles in Pages, Dec 1999, Feb 2000, Apr 2000, Jun 2000, Aug 2000, Oct 2000 |
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Contributed 3 problems to U.S. Puzzle Championship, 1999 |
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| Honors/Awards |
MSI Research Fellow, Cornell University, 1991 |
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NSF Graduate Fellowship, 1987-1990 |
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graduated summa cum laude from Rose-Hulman, 1987 |
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NSF Undergraduate Research Fellow, University of Minnesota at Duluth, 1986 |
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Member of 9th ranked Putnam team, 1984 |
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| Erdös Number |
3 |
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