Visual mathematics Posted by axiom on Wednesday October 10, 2007 @09:06AM from the mahalanobis.twoday.net dept. http://mahalanobis.twoday.net/stories/2796923/ ( 3 comments | 17 points | on HN )
http://www.amazon.com/Proofs-without-Words-Exercises-Classro...
http://en.wikipedia.org/wiki/Knot_Theory