Claude Fable 5 AI finds a tiny formula that topples an 87-year-old math conjecture
Anthropic mathematician Levent Alp├╖ge used Claude Fable 5 LLM to discover a counterexample that disproves the Jacobian conjecture in three dimensions and higher, a famous open problem in algebraic geometry that has resisted mathematicians for over 80 years. The AI-assisted discovery demonstrates how large language models can help identify elusive mathematical patterns and objects, with the counterexample simple enough to share on social media.












