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Erdős·erdos:426

Erdős Problem 426

problem formal record: solved source: disproved (Lean)$25 F2 declared

Checked, not verified. 1 independent check recorded, with verdict dependencies unavailable. The checks are set out below.

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

graph theory·Source

AI activity

How grades work
Aristotle

20 Apr 2026·supporting task

Bradač and Christoph (2024)

full A1 V1 F2
Reasoning and sources

Autonomy

Secondary contribution: formalization

Details

proof to formalize: Bradač and Christoph (2024)

Fidelity

How fidelity is graded

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

Checks

1
  • dependencies unavailable·qed.bot

    error: ComparatorChallenges: package directory not found: /tmp/qed-checks/plby-lean-proofs-68da20b9-src_latest/ComparatorChallenges

    proof rebuilt and axioms inspected·2026-08-21

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All discussion

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Formal material

Formal statements · 1
Cited proofs · 1
Also known as · 3
  • https://www.erdosproblems.com/426
  • https://github.com/google-deepmind/formal-conjectures/blob/main/FormalConjectures/ErdosProblems/426.lean
  • FormalConjectures/ErdosProblems/426.lean

Cite this record

qed.bot, “Erdős Problem 426”, https://qed.bot/s/erdos-426, as of 30 Sep 2026.

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