Why are there no 3 dimensional "complex numbers"?
30:31
Climbing past the complex numbers.
45:08
why there is no four dimensional cross product.
25:06
What is the i really doing in Schrödinger's equation?
25:48
how to make a field
51:16
Why can't you multiply vectors?
15:21
Why π^π^π^π could be an integer (for all we know!).
13:09
a heroic use of the complex numbers
31:51