pram_cplex_test, a BASH code which calls cplex(), to read the LP file defining the pram tiling problem, solve the linear programming problem, and write the solution to a file.
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pram, a MATLAB code which considers the pram puzzle, a smaller version of the eternity puzzle. The pram puzzle specifies a region R composed of 2304 30-60-90 triangles, and a set of 64 "tiles", consisting of 36 30-60-90 triangles, and seeks an arrangement of the tiles that exactly covers the region.
cplex, examples which call cplex(), which is an IBM optimization package which defines and solves a variety of linear programming problems, as well as network flow problems, quadratic programming problems, and mixed integer programming problems.