Problem

erdos:45

True ↔ ∀ (k : ℕ), 2 ≤ k → ∃ n, ∀ (colouring : ℕ → Fin k), ∃ colour, ∃ D' ⊆ {d ∈ n.divisors | 1 < d ∧ d < n}, (∀ d ∈ D', colouring d = colour) ∧ D'.reciprocalSum = 1

Open Current State

Declared status: proved (Lean)
Formalization: formalized
Subjects: number theoryunit fractionsramsey theory
OEIS: possible
Sources: source:erdos-problemssource:formal-conjecturessource:jayyhk-erdos-leansource:plby-lean-proofs
Statement: www.erdosproblems.com

Matching claims

0

No direct claims

This problem has no directly related claim record.

Browse this Repository’s Claims