Erdős Problem 331 — qed.bot Claims, announcements and changes recorded against Erdős Problem 331. https://qed.bot/feeds/s/erdos-331.xml 2026-09-30T14:34:16Z qed.bot Formal status changed: Erdős Problem 331 urn:qed:change:formal-status:erdos:331:solved 2026-09-30T14:34:16Z The formal record now marks Erdős Problem 331 as solved, previously mixed. Erdős Problem 331 — full (Aristotle) urn:qed:95610aaf8536 2026-01-31T00:00:00Z Ruzsa. Autonomy A1, evidence V1, fidelity F2.