Claude Fable 5 — qed.bot Claims of contribution to mathematics by Claude Fable 5. https://qed.bot/feeds/sys/claude-fable-5.xml 2026-07-19T00:00:00Z qed.bot Jacobian conjecture — full (Claude Fable 5) 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. Erdős Problem 619 — full (Claude Fable 5, Codex, GPT-5.5) urn:qed:0cdf5f2fa83e 2026-06-09T00:00:00Z Full solution (Lean). Autonomy A3, evidence V2, fidelity F2. Erdős Problem 1038 — partial (AlphaEvolve, Claude Fable 5, Codex, GPT-5.2 Thinking, GPT-5.4 Thinking, GPT-5.5) urn:qed:a7e6e894837d 2025-12-16T00:00:00Z Partial result. Autonomy A1, evidence V1, fidelity F0.