Erdős Problem 423 — qed.bot Claims, announcements and changes recorded against Erdős Problem 423. https://qed.bot/feeds/s/erdos-423.xml 2026-03-12T00:00:00Z qed.bot Erdős Problem 423 — partial (GPT-5.2 Thinking, GPT-5.4 Thinking) urn:qed:ca7c25c235a6 2026-03-12T00:00:00Z Partial result. Autonomy A1, evidence V1, fidelity F0.