Unverified50% confidenceEventExact time

The formalization of the four color theorem was completed in 2005 by Georges Gonthier using Coq

1

Sources

50%

Confidence

Long-term

Relevance

9/7/2026

First Seen

Sources

Formalizing Fermat's Last Theorem: How Lean 4 Verifies Math's Hardest Proof

Related Entities

Four Color Theoremconcept Georges Gonthierperson Coqproduct

Related Claims

VerifiedCoq originated from France's INRIA, is based on the Calculus of Inductive Constructions, and has been used to verify the proof of the Four Color Theorem61% similar

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