Full Lean Formalization of the Geometrization Conjecture Proof Completed

soumitrashukla9 · x · 2026-10-10

Researchers announce a complete Lean formalization of the Hamilton–Perelman proof of Thurston's Geometrization conjecture, generalizing earlier work that only covered the Poincaré conjecture. Ben, Yuan, Ziyang and the author completed it in collaboration with NVIDIA's Humanfia team, giving three-manifold topology's central theorem a fully machine-verifiable proof.

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