
 Fermat, Computer Algebra System 
  Fermat is a computer algebra system for Macintosh, Windows, Linux, and Unix by me, Robert H. Lewis of Fordham University, that does arithmetic of arbitrarily long integers and fractions, symbolic calculations, matrices over polynomial rings, graphics, and other numerical calculations. 
  Fermat is especially good at polynomial and rational function arithmetic; Smith normal form; determinant, normal forms, and inverse of matrices with multivariate polynomial entries over Z, Q, Zp, finite fields, or more complex fields; sparse matrices; characteristic polynomials; and gcd of multivariate polynomials over Z, Zp, or finite fields. 
  Fermat has the ability to be interrupted and then later return to the computation, picking up where it left off. 
 www.bway.net /~lewis (2306 words) 
