Curriculum Vitae

Erich Friedman
Math and CS Department
Stetson University
DeLand, FL 32723
efriedma@stetson.edu

Interests Geometrical Packing
Combinatorial Geometry
Game Theory
Graph Theory
Computational Complexity

Education Ph.D. in Mathematics, Cornell University, 1991
M.S. in Mathematics, Cornell University, 1989
B.S. in Mathematics, Rose-Hulman Institute of Technology, 1987

Employment Associate Professor, Stetson University, 1998-present (Chair, 2000-2003)
Assistant Professor, Stetson University , 1992-1998
Acting Assistant Professor, Cornell University, 1991-1992
Instructor, Cornell University, 1990-1991

Refereed Papers Covering Squares with Unit Squares, (with David A. Paterson),
           Geombinatorics, Volume XV 3 (2006) 130-137.
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.
30 Two-Colored Points with No Empty Monochromatic Convex Fourgons,
           Geombinatorics, Volume XIV, 2 (2004) 53-54.
Partridge Numbers, (with Patrick Hamlyn),
           Geombinatorics, Volume XIII 1 (2003) 10-18.
Pascal's Triangle and the Boltzmann Distribution (with Tandy Grubbs),
           The Chemical Educator, 8 (2003) 116-121.
Squares Touching a Constant Number of Other Squares,
           Geombinatorics, Volume XII, 2 (2002) 55-60.
Constant Neighbor Dihedral Tilings with 15, 32, and 43 Neighbors
           (with Berend Jan van der Zwaag),
           Geombinatorics, Volume XI, 3 (2002) 74-77.
Magic Carpets (with Mike Keith),
           Electronic Journal of Integer Sequences, Volume 3, Issue 2 (2000)
N-Vex Shapes, Geombinatorics, Volume IX, 4 (2000) 159-163.
Heesch Tiles with Surround Numbers 3 and 4,
           Geombinatorics, Volume VIII, 4 (1999) 101-103.
Packing Unit Squares in Squares: A Survey and New Results,
           Electronic Journal of Combinatorics, DS7, 1998, 2000, 2002, 2005, 2009
How Many Bridge Auctions? (with Douglas Jungreis),
           College Mathematics Journal, 19 (1988) 171-172.

Other Papers Cubic is NP-complete, Proceedings of Florida MAA Section Meeting, 2001
What's in a Name?, Math Horizons, p. 35, April 2001
Hinged Dissection of Polyominoes and Polyforms
           (with Erik Demaine, Martin Demaine, and David Eppstein),
           Proceedings of 11th Canadian Conference on Computational Geometry, 1999

Preprints Sets of Points that are the Vertices of K Non-overlapping N-gons
Pearl Puzzles are NP-Complete
Corral Puzzles are NP-Complete
Pushing Blocks in Gravity is NP-Hard
Spiral Galaxies Puzzles are NP-Complete
New Bounds for Largest Planar Graphs with Fixed Maximum Degree and Diameter
           (with Rob Pratt)

Plenary Talks Two Dozen Unsolved Problems in Planar Geometry,
           Embry-Riddle Undergraduate Mathematics Conference, 2004
Reptiles, Partridges, and Golden Bees: Tiling Shapes with Similar Copies,
           MAA meeting, 2003

Other Talks Tiling Triangular Polyominoes With Two Tiles, Department Seminar, 2006
Minimal Matchstick Graphs With Small Degree Sets, Department Seminar, 2006
A Dozen Unsolved Problems in Geometry, Department Seminar, 2003
Spiral Galaxies Puzzles are NP-Complete, Department Seminar, 2002
Triangle Centers, MAA meeting, 2002
Hackenbush: The Simple Truth, QED Seminar, 2001
Cubic is NP-Complete, MAA meeting, 2001
Cubic is NP-Complete, Department Seminar, 2000
New Bounds on Large Regular Planar Graphs, MAA meeting, 2000
How to Cut a Cake, Department Seminar, 1999
New Bounds on Large Planar Graphs, Department Seminar, 1999
Packing Squares, MAA meeting, 1998
Packing Unit Squares in Squares, Department Seminar, 1997
The Game of Life, Department Seminar, 1996
Trapezoidal Numbers, Department Seminar, 1996
Mathematics and Can Stacking, DeLand High School, 1994, 1996
The Marksman Problem, Department Seminar, 1995
Mathematica and Interactive Statistics, MAA/AMS meetings, 1995
Geometric Dissections, Department Seminar, 1994
StetStat: An Interactive Statistics Package, ICTCM, 1994
The Four Color Theorem, Department Seminar, 1994

Courses Taught Finite Math, Precalculus, Business Calculus, Calculus I, II and III,
Calculus with Review, Part I, and Part II, Real Analysis I and II, Complex Analysis,
Probability, Intro to Math & Stat Modeling, Mathematical Statistics, Mathematical Modeling,
Intro to Game Theory, Game Theory Seminar, Graph Theory, Senior Research

Mini-Courses Multivariable Calculus Using the Harvard Calculus Consortium Materials, 1995
Teaching Calculus Using Mathematica, 1993
Calculus and Mathematica on the Macintosh, 1993

Service Department Chair, 2000-2003
Acting Department Chair, Summer 1998-2000, 2005, 2006
Admissions Committee, 1994-1997, 2000-2003, 2011-present (Chair 1996-1997, 2001-2003)
Faculty Senate, 1995-1998
Stetson High School Math Contest Organizer, 1995-1999
Math/Computer Science Seminar Organizer, 1994-1999
Mathematical Contest in Modeling Organizer, 1997, 1998
Putnam Examination Organizer, 1992, 1997, 1999, 2003, 2004, 2006, 2008, 2009
Faculty Advisor to QED, 1999-2000, 2004-2005, 2006-2009
Faculty Advisor to Club Bridge, 2001-present

Other Activities Reviewed note, American Mathematical Monthly, 2006
Reviewed article, Electronic Journal of Combinatorics, 2005
Consultant, Volusia County Environmental Health Lab, 2003
Associate Editor, Encyclopedia of Integer Sequences, 2002
Editor, Rose-Hulman Insititute of Technology Undergraduate Mathematics Journal, 1999-2009
Reviewed textbook, Addison Wesley Longman Publishers, 1999
Field tested Mathematica software as part of NSF grant, 1999
Reviewed article, Electronic Journal of Combinatorics, 1998
Statistical Consultant, Volusia County Health Services, 1994-1995
Mathematical Consultant, Enigmatix Inc., 1994
Reviewed textbook, John Wiley Publishers, 1994
Reviewed article, PRIMUS, 1993

Puzzling Contributed 1 problem to U.S. Puzzle Championship, 2011
Featured biography in Enigma: 2011
Featured puzzle layout in World Of Puzzles: Mar 2011
Published Puzzles in Automation Notebook: Winter 2011
Published puzzles in World Of Puzzles: Jan 2010, Mar 2010, May 2010, Jul 2010, Sep 2010,
           Nov 2010, Jan 2011, Mar 2011, May 2011, Jul 2011, Sep 2011, Nov 2011
Published puzzles in Games Magazine: Nov 2009, Dec 2009, Feb 2010, Mar 2010, Apr 2010,
           May 2010, Jul 2010, Aug 2010, Sep 2010, Oct 2010, Nov 2010, Dec 2010, Feb 2011,
           Mar 2011, Apr 2011, Jul 2011, Aug 2011, Sep 2011, Oct 2011, Nov 2011, Dec 2011
Contributed 2 problems to U.S. Puzzle Championship, 2010
Contributed 3 problems to U.S. Puzzle Championship, 2009
Published puzzles in Brain Games: Jan 2008, Jul 2009, Jul 2010, Oct 2010
Contributed 2 problems to U.S. Puzzle Championship, 2008
Published puzzles in Bash, 2008
Contributed 1 problem to U.S. Puzzle Championship, 2007
Published puzzle in Reader's Digest, Apr 2007
Published puzzles in Games Magazine: Nov 2006, Apr 2007
Published 3 puzzles on Perplexcity cards, 2006
Contributed 4 problems to U.S. Puzzle Championship, 2006
Contributed 4 problems to U.S. Puzzle Championship, 2005
Contributed 4 problems to U.S. Puzzle Championship, 2004
Contributed 3 problems to U.S. Puzzle Championship, 2003
Contributed 5 problems to U.S. Puzzle Championship, 2002
Contributed 3 problems to U.S. Puzzle Championship, 2001
Contributed 18 problems to World Puzzle Championship, 2000
Contributed 13 problems to U.S. Puzzle Championship, 2000
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
Published puzzles in World of Puzzles: Aug 2000, Sep 2000
Published puzzles in Pages: Dec 1999, Feb 2000, Apr 2000, Jun 2000, Aug 2000, Oct 2000
Contributed 3 problems to U.S. Puzzle Championship, 1999

Erdös Number 3

last updated
Sep 15, 2011

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