Erdős Problem 44: Extending Sidon Sets — qed.bot Claims, announcements and changes recorded against Erdős Problem 44: Extending Sidon Sets. https://qed.bot/feeds/s/erdos-44.xml 2026-09-30T14:34:16Z qed.bot Formal status changed: Erdős Problem 44: Extending Sidon Sets urn:qed:change:formal-status:erdos:44:mixed 2026-09-30T14:34:16Z The formal record now marks Erdős Problem 44: Extending Sidon Sets as mixed, previously open.