You might be interested in the PhD thesis of Christoph Schwarzweller (University of Tuebingen, Germany) : "Mizar Verification of Generic Algebraic Algorithms" http://www-ca.informatik.uni-tuebingen.de/PEOPLE/schwarzw/pub.html A related URL: http://www.cs.rpi.edu/~schupp/suchthat/#verification -- Roman Matuszewski romat@mizar.org http://mizar.org