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Finally a simple, easy to understand 4 color proof!
The Four Color Map Theorem - Numberphile
Math's Map Coloring Problem - The First Proof Solved By A Computer
New Proof for 4 Color Map Theorem.
The 4-Color Theorem
New Proof of the Four Color Problem
A computer free approach to a 4 colour proof
The Four Color Theorem
A simple "proof" of the Four Color Theorem (April fool's day video)
Continued Fractions And The 4-Color Theorem
Four Color Map Problem: A Common Sense Proof
Intro proof 4 colour map theorem