Classification of Finite Simple Groups Fully Formalized in Lean
Axiom Math has completed a full Lean formalization of the Classification of Finite Simple Groups, spanning about 43.1 million lines of code and 2.05 million declarations. The effort also uncovered proof issues in the published literature.
2026-11-03 ~ 2026-11-03 · 2 related posts
- Episode 1: Axiom's AI Agent Cluster Lean-Formalizes the Classification of Finite Simple Groups in 24 Days(2026-10-27, 34 posts)
- Episode 2: Classification of Finite Simple Groups Fully Formalized in Lean(2026-11-03, 2 posts)
- CFSG fully formalized in Lean: 43.1M lines, and a flaw found in a published proof — ChrSzegedy · 2026-11-03
- Finite Simple Groups Classification Fully Formalized in Lean, Exposing 96 Errors in 47 Peer-Reviewed Papers — ChrSzegedy · 2026-11-03