What is a metric space ?
8:29
Can a disk be a square ?
4:51
A Proof that the square root of 2 is irrational that's intuitive.
11:37
Topology of Metric Spaces - Unit 1 - Lecture 65
12:31
Weird notions of "distance" || Intro to Metric Spaces
9:41
What is a Topological Space?
1:15:19
Lecture 1: Basic Banach Space Theory
20:54
What is a Homeomorphism
11:34