Problem

erdos:50

sorry ↔ ∀ (f : ℝ → ℝ), Erdos50.IsDistributionOfPhiRatio f → ¬∃ x ∈ Set.Icc 0 1, ∃ y > 0, HasDerivWithinAt f y (Set.Icc 0 1) x

Open Current State

Declared status: open
Formalization: formalized
Prize: $250
Subjects: number theory
OEIS: N/A
Sources: source:erdos-problemssource:formal-conjectures
Statement: www.erdosproblems.com

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