The Four Color Theorem
The Four Color Theorem This page gives a brief summary of a new proof of the Four Color Theorem and a four-coloring algorithm found by Neil Robertson, Daniel P. Sanders, Paul Seymour and Robin Thomas. Table of Contents: History. Why a new proof Outline of the proof. Main features of our proof. Configurations. Discharging rules. Pointers. A quadratic algorithm. Discussion. References. History.
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The four colour theorem
The four colour theorem Geometry and topology index History Topics Index The Four Colour Conjecture first seems to have been made by Francis Guthrie. He was a student at University College London where he studied under De Morgan. After graduating from London he studied law but by this time his brother Frederick Guthrie had become a student of De Morgan. Francis Guthrie showed his brother some ...
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