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 conjecture is false in three dimensions and...
Source: [ScienceDaily](https://www.sciencedaily.com/releases/2026/08/260804034634.htm)