Poincaré Conjecture Fully Formalized in 4.7M Lines of Lean

A four-person team led by UCSD professor Ben Chow completed the full Lean formalization of the Hamilton–Perelman proof of the Poincaré conjecture, totaling 4.7 million lines of code, with AI producing 2.7 million lines in a two-week sprint.

2026-09-28 ~ 2026-09-28 · 3 related posts

• Team completes Lean formalization of Poincaré conjecture proof in 4.7M lines — latticecut · 2026-09-28
• Poincaré conjecture fully formalized in Lean: 4.7M lines, AI wrote 2.7M in two weeks — 新智元 · 2026-09-28
• Poincaré conjecture fully formalized in Lean after two-week sprint — burny_tech · 2026-09-28