Mathematics Atlas

How Proof Is Made
Sources

Thomas, The Four Color Theorem (Faculty Reference Page)

Faculty Reference Page

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Robin Thomas's own reference page on the four color theorem, covering its history, the 1976 Appel-Haken proof, and the 1997 Robertson-Sanders-Seymour-Thomas simplified proof he co-authored, including his own note that part of the proof cannot be verified by hand.

Facts
Citation
Author
Robin Thomas
Publisher
Georgia Institute of Technology, School of Mathematics
URL
https://thomas.math.gatech.edu/FC/fourcolor.html
Source Type
Primary Text
Assessment
Reliability Tier
1
Sources
Thomas, The Four Color Theorem (Faculty Reference Page)
Robin Thomas, Georgia Institute of Technology, School of MathematicsView the Source
Claims Backed By This Source (13 claims)

This source backs 13 claims across the atlas. As facts: 10 well-attested. As cited relationships: 2 holds. Plus 1 entities citing it as a general reference with no single fact or relationship attached.

Disposition By Topic

  • Theorems, 7 claims: 4 well-attested, 2 holds, 1 general references.
  • Sources, 6 claims: 6 well-attested.
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