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title: "Jacobian Conjecture — Stuff That Spins"
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# Jacobian Conjecture

**Type:** topic  
## Related Articles

- [Levent Alpöge, a mathematician who works at Anthropic, says he was able to disprove the 87-year-old Jacobian conjecture with the help of Fable 5 (Matthew Sparkes/New Scientist)](https://stuffthatspins.com/spin/levent-alpge-a-mathematician-who-works-at-anthropic-says-he-was-able-to-disprove-the-87-year-old-jacobian-conjecture-wit) — July 20, 2026
- [Claude Fable produced a counterexample to the Jacobian Conjecture](https://stuffthatspins.com/spin/claude-fable-produced-a-counterexample-to-the-jacobian-conjecture) — July 20, 2026

## Related Claims

- Levent Alpöge was able to disprove the 87-year-old Jacobian conjecture with the help of Fable 5
- Claude Fable produced a counterexample to the Jacobian Conjecture

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