Erdős Problem 447 — qed.bot Claims, announcements and changes recorded against Erdős Problem 447. https://qed.bot/feeds/s/erdos-447.xml 2026-02-10T00:00:00Z qed.bot Erdős Problem 447 — full (Aristotle) urn:qed:27fe6d3f05df 2026-02-10T00:00:00Z Kleitman (1971). Autonomy A1, evidence V1, fidelity F2.