Papers
Here are some recent publications and preprints:
- A Conversation with Archimedes, Math Horizons, to appear.
- Why is PSL(2,7) isomorphic to GL(3,2)? (with Nicholas Loehr), American Mathematical Monthly 16, #8 (October 2009), 727-731.
- A Dozen Hat Problems (with James Tanton), Math Horizons 16, #4 (April 2009), 22-25.
- Kirkman’s Schoolgirls Wearing Hats and Walking through Fields of Numbers
(with Keith E. Mellinger), Mathematics Magazine 82 (February 2009), 3-15.
- Fibonacci's Forgotten Number (with Jason C. Brunson), College Mathematics Journal 39 (March 2008), 112-120.
- Whodunit?, Math Horizons 14, #4 (April 2007), 25-26, 28-29.
- A Conversation with Lewis Carroll, Math Horizons 14, #2 (November 2006), 9-11.
- Hyperelliptic Curves with Compact
Parameters (with Bruce T. Myers and Jerome A. Solinas),
Designs, Codes, and Cryptography 36 (2005), 245-261.
- Phoebe Floats! , College
Mathematics Journal 36 (March 2005), 114-122. MAA Polya Award, 2006.
- A Conversation with
Leonardo Pisano , Math Horizons 12, #3 (February
2005), 16-18.
- The Ancient World's Magical
Genius Thinks Big , Math Horizons 12, #2 (November
2004), 5-8.
- Configurations with Subset
Restrictions (with Theresa P. Vaughan), Journal of
Combinatorial Mathematics and Combinatorial Computing 48
(2004), 197-215.
- The Fabulous (11,5,2) Biplane,
Mathematics Magazine 77 (April 2004), 87-100.
- Three Connections to Continued
Fractions, Pi Mu Epsilon Journal 11 (2002),
353-362.
- Elliptic Curves from Mordell to
Diophantus and back (with Bruce T. Myers), American
Mathematical Monthly 109 (August-September 2002), 639-649.
- The Many Names of (7,3,1),
Mathematics Magazine 75 (April 2002), 83-94. MAA Allendoerfer Award, 2003.
- Cycles of Directed Graphs Defined
by Matrix Multiplication (mod n) (with Theresa P. Vaughan),
Discrete Mathematics 239 (2001), 109-120.
- Magic Squares, Finite Planes and Points
of Inflection on Elliptic Curves, College Mathematics
Journal 32 (September 2001), 260-267.
- Three Fermat Trails to Elliptic
Curves, College Mathematics Journal 31(May 2000),
162-172. MAA Polya Award, 2001.
- Square Roots from 1;24,51,10 to Dan
Shanks, College Mathematics Journal 30 (March 1999),
82-95. MAA Polya Award, 2000.
- Directed Graphs Defined by
Arithmetic (mod n), Fibonacci Quarterly 35
(1997), 346-351.
