OAI/Geometry/SurfaceImmersion/Atlas/ShrinkingWeightBounds.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Uniform finite-order coordinate bounds for the actual radius family.

  1. lemma OAI.ClosedSurfaceR4.FiniteOrderSmoothing.compact_parameter_slice_bounds line 14
  2. theorem OAI.ClosedSurfaceR4.FiniteOrderSmoothing.shrinkingWeight_coordinate_bounds line 61

    Source documentation

    One globally smooth coordinate multiplier represents all smaller ratio weights; its product with the circular bump has uniform finite-order bounds.

    theorem shrinkingWeight_coordinate_bounds (p : M) (w : M → ℝ)
        (hw : ContMDiff planeModel 𝓘(ℝ) ∞ w) {r0 R : ℝ}
        (hreg0 : circularCoordinateRegion p r0 ⊆ (coordinateChart p).target)
        (hR : R^2 < r0^2) :
        ∃ a : SmallModes.Base → ℝ, ContDiff ℝ ∞ a ∧
          (∀ r : ℝ, r^2 ≤ R^2 → ∀ x ∈ (coordinateChart p).target,
            shrinkingCircularWeight p w r0 r ((coordinateChart p).symm x) =
              a x * circularFlatBump (coordinateChart p p) r x) ∧
          ∃ C : ℕ → ℝ, (∀ m, 0 ≤ C m) ∧ ∀ r : ℝ, r^2 ≤ R^2 →
            ∀ m, WeightedBound univ 1 m (C m)
              (fun x => a x * circularFlatBump (coordinateChart p p) r x) := by
    …

    Mentions: OAI.ClosedSurfaceR4.planeModel, OAI.ClosedSurfaceR4.FiniteOrderSmoothing.circularCoordinateRegion, OAI.ClosedSurfaceR4.coordinateChart, OAI.ClosedSurfaceR4.SmallModes.Base, OAI.ClosedSurfaceR4.FiniteOrderSmoothing.shrinkingCircularWeight