Claims, announcements and changes recorded against Jacobian conjecture. https://qed.bot/feeds/s/wikipedia-jacobianconjecture.xml 2026-07-19T00:00:00Z qed.bot urn:qed:307ddaeeba92 2026-07-19T00:00:00Z

An explicit polynomial map in three variables with constant Jacobian determinant −2 that sends distinct points to the same image, disproving the Jacobian conjecture in every dimension above two. The two-variable case remains open.. Autonomy A2, evidence V2, fidelity F0.