(00:07) Matrix multiplication: how it isn't done, and how it is done.

(00:13) Example of matrix multiplication. Noncommutivity of matrix multiplication.

(00:25) When is it not possible to multiply? Matrix times vector product. Linear systems are matrix equations.

(00:39) Properties of matrix multiplication. (Aside) Associativity of function composition.

(00:45) More Properties...

(00:54) Fibonacci's Rabbits.

(01:06) )Fibonacci's numbers. How we compute them efficiently.
