The Pigeon Hole Principle: 7 gorgeous proofs
39:23
The ultimate tower of Hanoi algorithm
22:49
How did Fibonacci beat the Solitaire army?
53:33
The hardest "What comes next?" (Euler's pentagonal formula)
30:56
What does this prove? Some of the most gorgeous visual "shrink" proofs ever invented
56:37
Why did they prove this amazing theorem in 200 different ways? Quadratic Reciprocity MASTERCLASS
33:25
The Korean king's magic square: a brilliant algorithm in a k-drama (plus geomagic squares)
46:34
700 years of secrets of the Sum of Sums (paradoxical harmonic series)
15:31