OAI/Geometry/RCD/Sobolev/NoProjectedEulerSequence.lean

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Excluding the actual normalized orthogonal projection sequence

  1. theorem OAI.RegularPointCoordinates.no_projected_euler_sequence line 21

    Source documentation

    The unnormalized projection residual cannot dominate its source error along a geometric compactness sequence. All equations here are actual Sobolev equations, and orthogonality follows from the actual projection. The fixed outer constant changes the limit norm to M⁻², which stays nonzero.

    theorem no_projected_euler_sequence {K : ℝ} {n : ℕ} {hX : NoncollapsedRCD K n X}
        (hcompact : LocalPoissonHarmonicCompactnessInput hX)
        (hgradient : LocalHarmonicL2GradientInput hX) (hn : 2 ≤ n)
        {S ρ M C : ℝ} (hS : 0 < S) (hρ : 0 < ρ) (hρS : ρ < S) (hM : 0 < M)
        (q : RadialCompactnessSequence hX S)
        (v w e : ℕ → SobolevSpace (hausdorff n X) hX.quadratic)
        (b : ℕ → Euclidean n) (k B : ℕ → ℝ)
        (hf : ∀ i, ∀ᵐ x ∂(hausdorff n X).restrict (ball (q.center i) (S * q.radius i)),
          localGamma (hausdorff n X) hX.quadratic (q.radialFunction i) (q.radialFunction i) x ≤ B i)
        (hw : ∀ i, IsSobolevHarmonicOn (hausdorff n X) hX.quadratic
          (ball (q.center i) (S * q.radius i)) (w i))
        (hproj : ∀ i, SobolevSpace.restrictLp (hausdorff n X) hX.quadratic
    …

    Mentions: OAI.RegularPointCoordinates.NoncollapsedRCD, OAI.RegularPointCoordinates.LocalPoissonHarmonicCompactnessInput, OAI.RegularPointCoordinates.LocalHarmonicL2GradientInput, OAI.RegularPointCoordinates.RadialCompactnessSequence, OAI.RegularPointCoordinates.SobolevSpace, OAI.RegularPointCoordinates.hausdorff, OAI.RegularPointCoordinates.Euclidean, OAI.RegularPointCoordinates.localGamma, OAI.RegularPointCoordinates.IsSobolevHarmonicOn, OAI.RegularPointCoordinates.SobolevSpace.restrictLp