A Unique Proof Without Induction
8:47
The Most Satisfying Proof: Product of 4 Consecutive Integers is not Square
12:34
Sum of first n cubes - Mathematical Induction
15:17
You see nonlinear equations, they see linear algebra! (Harvard-MIT math tournament)
10:08
Powers of Non-Diagonalisable Matrices
11:12
What the Submarine Puzzle Teaches Us About Infinity
9:32
A nice problem from the 2012 math olympiad
10:02
A Simple Sequence, with Fun Consequences
9:59