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Tuesday, 21 July 2026

Claude Fable AI Produces Counterexample to Jacobian Conjecture

A single-source report indicates the AI system has found a solution to the century-old mathematical problem.

Talivio News · Global 1 min read
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Claude Fable has produced a counterexample to the Jacobian Conjecture.

The Claude Fable 5 AI has apparently found a counterexample that disproves the Jacobian conjecture.

Mathematicians have been trying to prove the Jacobian conjecture for nearly a century.

Updates

The discovery was achieved using Claude Fable 5, a model developed by Anthropic, which successfully produced the counterexample over the weekend. Additionally, the process yielded three new numbers derived from the Alpöge function.

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Sources

  1. hnrss.org — Claude Fable produced a counterexample to the Jacobian Conjecture (opens in a new window)
  2. newscientist.com — AI’s solution to 87-year-old riddle takes mathematicians by surprise (opens in a new window)
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