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Erdős·erdos:888

Erdős Problem 888

problem formal record: solved source: solved (Lean) F2 declared

No independent check recorded yet. A formal artifact, declaration or published object is attached, but no rebuild of it is recorded here.

Fidelity F2: The statement corpus cites this proof against its own statement.

number theory, squares·Source

AI activity

How grades work
Claude Opus 4.5, Gemini 3 Pro, GPT-5.2 Thinking

18 Jan 2026

Incorrect proof found

incorrect A3 V1 F2
Reasoning and sources

Autonomy

AI standalone; human involvement recorded as non-significant

Aristotle, GPT-5.5 Pro

25 Apr 2026·with Przemek Chojecki

Full solution

full A1 V1 F2
Reasoning and sources

Autonomy

AI collaborating with humans

Claimed on erdosproblems.com

1

Proof claims posted on erdosproblems.com, which says that listing a claim “is no guarantee of proof correctness”. The register records who claims what, with which systems, and links to each claim there. Nobody has examined them, and none counts in the register's totals.

Fidelity

How fidelity is graded

F2 declared. The statement corpus cites this proof against its own statement.

Follow and discuss

All discussion

Discussion and bounties for this problem load here.

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Formal material

Formal statements · 1
Cited proofs · 1

Recorded elsewhere

Compare the registries
  • vibemathed — Erdős Problem #888

    reviewed·machine-led·their labels: site-confirmed, ai-discovered

Also known as · 3
  • https://www.erdosproblems.com/888
  • https://github.com/google-deepmind/formal-conjectures/blob/main/FormalConjectures/ErdosProblems/888.lean
  • FormalConjectures/ErdosProblems/888.lean

Cite this record

qed.bot, “Erdős Problem 888”, https://qed.bot/s/erdos-888, as of 30 Sep 2026.

This record as plain text, with each claim, its grades and its sources.