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

Aristotle

2026-04-20·supporting task

Bradač and Christoph (2024)

full A1 collaborative V1 write-up F2 declared

Reasoning and sources

Secondary contribution: formalization

proof to formalize: Bradač and Christoph (2024)

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

Computed from what the project declares and what the register holds, never from reading the mathematics. How fidelity is graded.

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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Formal statements · 1

FormalConjectures/ErdosProblems/426.lean
2 declarations, 1 unproved goals·research solved, test

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