Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsKempe's Universality Theorem: An Examplehttp://demonstrations.wolfram.com/KempesUniversalityTheoremAnExample/]]>http://demonstrations.wolfram.com/KempesUniversalityTheoremAnExample/