Morning Edition · Tuesday, July 21, 2026Published at 1:32 AM EDT · New York
An Anthropic Researcher Says Claude Fable 5 Produced a Counterexample to the Jacobian Conjecture
The claimed counterexample is a concrete polynomial map anyone can check, but the result has not been peer-reviewed.
Anthropic researcher Levent Alpoge says he used Claude Fable 5 to construct a counterexample to the Jacobian conjecture, a question in algebraic geometry that Ott-Heinrich Keller posed in 1939, according to ForkLog and GIGAZINE. The conject…
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