WHY ARE THESE TWO KNOTS THE SAME?
TrefoilFigure EightWhiteheadTrivial KnotPerko Pairs
Torus KnotsAlternating Knots
Crossing numberBridge numberUnknotting numberTricolorabilityLinking numberPolynomials
Do you think you can transform the red knot on the left to the
blue knot on the left?
Let's try it first, do not go to the hint
too soon!
Click here
for a hint.