Not Knot

Part 1 of 2 of Not Knot.

Part 2 of 2 of Not Knot.

Not Knot is a guided tour into computer-animated hyperbolic space. It proceeds from the world of knots to their complementary spaces -- what's not a knot. Profound theorems of recent mathematics show that most known complements carry the structure of hyperbolic geometry, a geometry in which the sum of three angles of a triangle always is less than 180 degrees.



http://www.geom.uiuc.edu/video/NotKnot/