I solved my 3rd Erdős problem, #870, with ChatGPT-5.5-Pro, then verified it by formalizing the whole proof in Lean 4, sorry-free and axiom-free. About 180,000 lines of Lean code.
- Text
- verbatim
- Model
- ChatGPT
- Source
- X ↗
- Published
- 2026-06
- Added
- 2026-09-06