Erdős Problem 209 — qed.bot Claims, announcements and changes recorded against Erdős Problem 209. https://qed.bot/feeds/s/erdos-209.xml 2026-06-19T00:00:00Z qed.bot Erdős Problem 209 — full (AxiomProver) urn:qed:32d65f2b9c5d 2026-06-19T00:00:00Z Escudero (2016). Autonomy A1, evidence V3, fidelity F2.