Source authenticated
Erdős Problem #966
Erdős reported in 1975 that Spencer had shown existence but gave no reference; no proof was on record before the AI solution
Exact FrontierDelta
Prior state unknown→proved
Scope and record
Occurred: Feb 25, 2026
Delta type: SOURCE CLAIM
Assumptions: VibeMathed verification: lean-verified. Publication: announcement. AI contribution: ai-discovered. Imported under CC BY 4.0.
Canonical aliases: Erdős Problem #966 · Erdős #966 · Problem 966
Confidence: Not scored
Registry verification: lean verified · announcement · resolved
Lineage and corrections
This event attributed to Aristotle