Erdős·erdos:1089

Erdős Problem 1089

problem formal record: solved source: solved 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.

geometry, distances·Source

AI activity

How grades work

Aletheia

1 Feb 2026

Full solution found

full A3 V1 F2

Reasoning and sources

Autonomy

AI standalone, with comparable literature existing

Details

literature: 🟢 Bannai and Bannai (1981)

literature found on: 1 Feb, 2026

similar?: Yes

Sources

Erdős problems AI wiki

Fidelity

How fidelity is graded

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

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Formal material

Formal statements · 1

FormalConjectures/ErdosProblems/1089.lean
2 declarations, 2 unproved goals·research solved

Cited proofs · 1

plby/lean-proofs/blob/8822f7ddef30fadbd92e1c6ab4ed897af356af5e/src/latest/ErdosProblems/Erdos1089.lean#L769
32 theorems, 0 unproved goals, 0 declared axioms

Recorded elsewhere

Compare the registries

vibemathed — Erdős Problem #1089
reviewed·machine-led·their labels: site-confirmed, ai-discovered

Also known as · 3

https://www.erdosproblems.com/1089
https://github.com/google-deepmind/formal-conjectures/blob/main/FormalConjectures/ErdosProblems/1089.lean
FormalConjectures/ErdosProblems/1089.lean

Cite this record

qed.bot, “Erdős Problem 1089”, https://qed.bot/s/erdos-1089, as of 30 Sep 2026.

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