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Claude Fable 5 AI finds a tiny formula that topples an 87-year-old math conjecture
Science Daily·August 6, 2026·1 min read

AI Summary
Claude Fable 5 AI has identified a simple counterexample to the Jacobian conjecture, a longstanding mathematical problem that has been unproven for 87 years. This breakthrough was achieved by a mathematician at Anthropic using the AI model.
From the source
A mathematician working at Anthropic says he used the AI model Claude Fable 5 to uncover a remarkably simple counterexample to the Jacobian conjecture, a famous problem that has resisted mathematicians for more than a century. The result shows that the conjec…
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