OAI/Geometry/RCD/Coordinates/NormalizationRebase.lean

GitHub source file

6 declarations, 0 contain sorry, 0 declared as axioms

Rebasing all exact normalizers in one working-scale frame

  1. theorem OAI.RegularPointCoordinates.normalized_column_rebase line 20

    Source documentation

    Changing the original working frame does not change any of the subsequently normalized scalar functions.

    theorem normalized_column_rebase (U : E →L[ℝ] SobolevSpace μ hQ)
        (T S : E ≃L[ℝ] E) :
        (U.comp (T : E →L[ℝ] E)).comp (S.trans T.symm : E →L[ℝ] E) =
          U.comp (S : E →L[ℝ] E) := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace

  2. theorem OAI.RegularPointCoordinates.exact_mean_normalization_rebase line 29

    Source documentation

    Exact mean normalization transports through a working-frame change.

    theorem exact_mean_normalization_rebase (U : E →L[ℝ] SobolevSpace μ hQ)
        (T S : E ≃L[ℝ] E) (s : Set X) (hs : MeasurableSet s)
        (hS : IsExactMeanNormalization μ hQ U s hs S) :
        IsExactMeanNormalization μ hQ (U.comp (T : E →L[ℝ] E)) s hs (S.trans T.symm) := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.IsExactMeanNormalization

  3. theorem OAI.RegularPointCoordinates.transformedColumn_rebase line 40

    Source documentation

    The operation agrees componentwise with the actual transformed columns.

    theorem transformedColumn_rebase {n : ℕ} (u : Fin n → SobolevSpace μ hQ)
        (T S : Euclidean n ≃L[ℝ] Euclidean n) :
        transformedColumn μ hQ (transformedColumn μ hQ u T) (S.trans T.symm) =
          transformedColumn μ hQ u S := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.Euclidean, OAI.RegularPointCoordinates.transformedColumn

  4. theorem OAI.RegularPointCoordinates.firstOrderSplitting_rebase line 52

    Source documentation

    First-order splitting bounds are exactly preserved in every rebased normalizer, including the same scalar representatives.

    theorem firstOrderSplitting_rebase {n : ℕ} (u : Fin n → SobolevSpace μ hQ)
        (T S : Euclidean n ≃L[ℝ] Euclidean n) (p : X) (r ε : ℝ) (w : X → Euclidean n)
        (h : FirstOrderSplittingOn μ hQ p r ε (transformedColumn μ hQ u S) w) :
        FirstOrderSplittingOn μ hQ p r ε
          (transformedColumn μ hQ (transformedColumn μ hQ u T) (S.trans T.symm)) w := by
    …

    Mentions: OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.Euclidean, OAI.RegularPointCoordinates.FirstOrderSplittingOn, OAI.RegularPointCoordinates.transformedColumn

  5. theorem OAI.RegularPointCoordinates.dyadic_regularizer_le_working_radius line 62

    Source documentation

    The scalar regularizer has a uniform bound over the complete finite range whenever its outer dyadic radius lies inside the working radius.

    theorem dyadic_regularizer_le_working_radius {r R lambda : ℝ} (hr : 0 ≤ r)
        (k : ℕ) (hR : (2 : ℝ) ^ k * r ≤ R) :
        |lambda * r ^ 2| * (2 : ℝ) ^ k ≤ |lambda| * R ^ 2 := by
    …
  6. theorem OAI.RegularPointCoordinates.dyadic_regularizer_le_geometric line 74

    Source documentation

    Keeping the dyadic room in the estimate makes the regularizer vanish at fine scales even when the working radius and regularizer are fixed.

    theorem dyadic_regularizer_le_geometric {r R lambda : ℝ} (hr : 0 ≤ r)
        (k : ℕ) (hR : (2 : ℝ) ^ k * r ≤ R) :
        |lambda * r ^ 2| * (2 : ℝ) ^ k ≤
          (|lambda| * R ^ 2) * (1 / 2 : ℝ) ^ k := by
    …