| import OAI.MeasureTheory.DyadicAvoidance.Model | |
| namespace OAI | |
| noncomputable section | |
| namespace Problem310 | |
| def OnePeriodic (H : Set ℝ) : Prop := | |
| ∀ x : ℝ, x + 1 ∈ H ↔ x ∈ H | |
| def periodDensity (H : Set ℝ) : ENNReal := | |
| MeasureTheory.volume (H ∩ Set.Icc (0 : ℝ) 1) | |
| end Problem310 | |
| end | |
| end OAI | |