OAI/MeasureTheory/Falconer/Estimates/DyadicCenters.lean

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7 declarations, 0 contain sorry, 0 declared as axioms

The actual dyadic centers as one translated integer grid

The graph packing estimates apply to centers of descendants of the original parent cube. Their integer labels and common translation are identified exactly, in every ambient dimension.

  1. def OAI.Falconer.dyadicCode line 17
  2. theorem OAI.Falconer.dyadicCode_bounds line 21
  3. theorem OAI.Falconer.DyadicCube.descendant_origin line 29
  4. theorem OAI.Falconer.DyadicCube.descendant_center line 45
  5. theorem OAI.Falconer.dyadicCode_injective_at_depth line 54
  6. theorem OAI.Falconer.DyadicCube.descendant_center_grid line 70

    Source documentation

    The translation includes half a child side. Its contribution cancels in every displacement used by the retained graph.

    theorem DyadicCube.descendant_center_grid {d n : ℕ} (Q : DyadicCube d)
        (p : List (Fin d → Bool)) (hp : p.length = n) :
        (Q.descendant p).center =
          WithLp.toLp 2 (fun i => Q.origin i + (Q.side / (2 : ℝ)^n)/2) +
            scaledGridPoint ((2 : ℝ)^n / Q.side) (dyadicCode p) := by
    …

    Mentions: OAI.Falconer.DyadicCube, OAI.Falconer.DyadicCube.center, OAI.Falconer.scaledGridPoint, OAI.Falconer.dyadicCode

  7. theorem OAI.Falconer.DyadicCube.center_sub_eq_grid_sub line 80