Christopher Carl Heckman's
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ASU Discrete Math Seminar

A bad picture of me, with Robin Thomas, in Georgia Tech's Research Horizons magazine


Papers

Research

My Erdös number is 3.

Not Research

  • Matrix Operations on TI Graphing Calculators (Unpublished instructions for solving a system of linear equations, and inverting a matrix, for the TI-83 and TI-85 graphing calculators)   PDF

  • Using Graphing Calculators To Evaluate Riemann Sums (Unpublished instructions for setting up Riemann sums and how to get a graphing calculator to evaluate them)   PDF

  • Matrix Operations on a Casio Graphing Calculator (Unpublished instructions for solving a system of linear equations, and inverting a matrix, for the Casio series of graphing calculators)   PDF

  • Linear Programming: Beyond 4.2 (The Simplex Method) (Unpublished introduction to Linear Programming, in response to the textbook which is used for MAT 119 at ASU)   PDF   [Updated August 1, 2006]

  • Rook Polynomials (Proposed extension of the Rook Polynomials page at MathWorld)   PDF

  • Matrix Applications: Markov Chains and Game Theory (Unpublished introduction to these topics, presented in an ASU Workshop for Tutors)   PDF



Software

  • The program GEMBED, which tests for embeddability of graphs on the projective plane, the torus, and the spindle surface. Available as a gzipped tar file. (Version 5.3A, some compiling errors fixed by Keith Briggs. Version 6.0J will incorporate the JGraphT package in Java.)

  • Coding the Even Directed Cycle algorithm for the Computing Even Cycles page (last update: September 1999). [Be sure to enable Java]

  • The program discharge.pas, which can be found among the rest of the Four Color Theorem files (last update: January 1997). The Four Color Theorem also has its own Webpage.



Conferences I've Attended

Now the legal stuff: These links are provided as a courtesy. Arizona State University does not, and does not mean to, endorse the linkage to these materials.

The contents of this page reflect solely the opinions of the author who originated it; the opinion of Arizona State is that I should stop goofing off and get to work. This page has (obviously) not been reviewed by, nor is it (again, obviously) a publication of Arizona State University. The person who is responsible for this page is: checkman@math.asu.edu. Blame him. Or send him money. Lots of money. And offer him a permanent job.