The complex number family.
30:31
Climbing past the complex numbers.
21:23
a nice result from Ramanujan's "lost notebook"
19:14
The strange cousin of the complex numbers -- the dual numbers.
31:51
Visualizing quaternions (4d numbers) with stereographic projection
19:05
Absolute Infinity - Numberphile
25:10
What is the square root of two? | The Fundamental Theorem of Galois Theory
21:46
Complex Numbers Have More Uses Than You Think
36:37