Problems/Erdos Problem #846

Erdos Problem #846

Erdos Problem #846
CombinatoricsSOLVED
Year
1980
Difficulty
*****
Solved by
DeepMind Prover Agent / OpenAI (2026)

Statement

A combinatorial problem independently solved by two AI labs.

Full solution (Lean), Feb 2026\text{Full solution (Lean), Feb 2026}

About this Problem

Remarkably solved independently by both DeepMind's prover agent and an OpenAI internal model in the same week, demonstrating convergent AI mathematical reasoning.

AI Contributions

Full SolutionLeanFeb 21, 2026

Full solution with Lean proof.

Tools: DeepMind Prover Agent
Full SolutionFeb 25, 2026

Independent full solution.

Tools: OpenAI Internal Model

About the Lean 4 Prover

Lean 4 is a theorem prover and programming language. When a proof compiles in Lean, it is mathematically certain to be correct — the type checker verifies every logical step. This is the gold standard for formal verification.

Our platform uses fal.ai serverless compute to run Lean verification, and Gemini to generate proof strategies that are then formally checked. ShinkaEvolve provides the evolutionary backbone for automated mathematical discovery.

Mathematical Art

Generate a unique AI illustration of this problem using fal.ai FLUX.

Connected Constellations