The Four Color Map Theorem - Numberphile
8:24
The 10,958 Problem - Numberphile
17:14
The Five Color Theorem (without Kempe chains)
9:39
A Colorful Unsolved Problem - Numberphile
9:04
Math's Map Coloring Problem - The First Proof Solved By A Computer
18:20
Gabriel's Horn Paradox - Numberphile
12:51
Deux (deux ?) minutes pour... le théorème des 4 couleurs
19:37
Why this puzzle is impossible
24:57