Documentation

LeanPool.CaffarelliKohnNirenberg.Core.Step4.PressureGradientOriginBSlotInstances

The whole-carrier pressure-gradient time mass of prop:bootstrap #

The B slot of prop:bootstrap asks for the actual clipped L^{6/5} time mass of a selected weak pressure gradient on the origin carrier B_{R₁}, measured against a coefficient carrying no velocity or gradient Morrey datum. This file proves that estimate at the two exponent/radius triples of the endgame, above one absolute Calderón–Zygmund threshold.

The route is: transfer the binder's field to the interior measurable weak gradient of eq:pressure-gradient-morrey, cover the carrier by the fixed finite lattice of collars of radius 1/8, and add the collar estimates.

The whole-carrier pressure-gradient time mass of prop:bootstrap #

The B slot of prop:bootstrap asks for the actual clipped L^{6/5} time mass of the selected weak pressure gradient on the origin carrier B_{R₁}, measured against the numerical coefficient

(|C_CZ| + 1) * (|R₀| + |R₁| + |ε| + 1) * max 1 ((2R₁/(1-R₁)) ^ θ),

where θ = 5 (1 - (6/5) / min ((1/τ + 8/25)⁻¹) q). That coefficient carries neither velocity nor gradient Morrey data, so the estimate has to come from the ε data alone.

This file records the numerical fact that makes the coefficient usable: any absolute mass below a threshold Cstar is paid by the coefficient once Cstar ≤ C_CZ, on the whole admitted parameter range 5/2 < q, 25/3 ≤ τ ≤ 25, 0 < R₁ < 3/4.

theorem CKN.Core.Step4.mass_le_bslot_coefficient {K : ENNReal} {Cstar C_CZ R₀ R₁ ε θ : ℝ} (hε : 0 ≤ ε) (hK : K ≤ ENNReal.ofReal Cstar) (hthr : Cstar ≤ C_CZ) :
K * (ENNReal.ofReal ε + 1) ≤ ENNReal.ofReal (|C_CZ| + 1) * ENNReal.ofReal (|R₀| + |R₁| + |ε| + 1) * ENNReal.ofReal (max 1 ((2 * R₁ / (1 - R₁)) ^ θ))

Above an absolute Calderón–Zygmund threshold the B-slot coefficient of prop:bootstrap pays any ε-linear mass whose absolute factor is below the threshold.

theorem CKN.Core.Step4.bslot_origin_gradient_transfer {Ω : Set Foundation.Parabolic.Vec3} {I : Set ℝ} {q R₁ : ℝ} {u : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3} {Du : Foundation.Parabolic.ParabolicPoint → Fin 3 → Foundation.Parabolic.Vec3} {p : Foundation.Parabolic.ParabolicPoint → ℝ} {f : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3} (hsol : IsSuitableWeakSolutionIntegrable Ω I q u Du p f) (hdom : closure (Foundation.Parabolic.parabolicCylinder 0 0 1) ⊆ spaceTimeSet Ω I) (hR₁ : R₁ ≤ 7 / 8) (Dp : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3) (hw : ∀ᵐ (s : ℝ) ∂MeasureTheory.volume.restrict I, ∀ (i : Fin 3), MeasureTheory.LocallyIntegrableOn (fun (y : Foundation.Parabolic.Vec3) => Dp (y, s) i) (Foundation.Parabolic.vec3Ball 0 R₁) MeasureTheory.volume ∧ HasWeakPartialDerivOn (Foundation.Parabolic.vec3Ball 0 R₁) i (fun (y : Vec 3) => p (y, s)) fun (y : Vec 3) => Dp (y, s) i) :

Any weak slice derivative of the pressure on an origin carrier agrees almost everywhere with the interior measurable weak gradient of eq:pressure-gradient-morrey on the ball of radius 7/8.

The fixed lattice of collars covers every origin carrier of radius at most 11/16, so the carrier mass is at most the sum of the cell masses.

The absolute harmonic remainder constant of eq:pressure-gradient-decomposition, supplied by the interior estimate for the harmonic pressure part.

Equations
Instances For

    The whole-carrier coefficient of prop:bootstrap: the fixed collar count times the collar coefficient at radius 1/8.

    Equations
    Instances For

      The absolute Calderón–Zygmund threshold above which the B slot of prop:bootstrap is paid by its own coefficient.

      Equations
      Instances For
        theorem CKN.Core.Step4.bslot_carrier_time_mass_le (ε : ℝ) (hε : 0 ≤ ε) {Ω : Set Foundation.Parabolic.Vec3} {I : Set ℝ} {q : ℝ} {u : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3} {Du : Foundation.Parabolic.ParabolicPoint → Fin 3 → Foundation.Parabolic.Vec3} {p : Foundation.Parabolic.ParabolicPoint → ℝ} {f : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3} (hsol : IsSuitableWeakSolutionIntegrable Ω I q u Du p f) (hdom : closure (Foundation.Parabolic.parabolicCylinder 0 0 1) ⊆ spaceTimeSet Ω I) (hsmall : ∫⁻ (w : Foundation.Parabolic.ParabolicPoint) in Foundation.Parabolic.parabolicCylinder 0 0 1, ENNReal.ofReal (Foundation.Parabolic.vec3EuclideanNorm (u w)) ^ 3 + ENNReal.ofReal |p w| ^ (3 / 2) + ENNReal.ofReal (Foundation.Parabolic.vec3EuclideanNorm (f w)) ^ q ≤ ENNReal.ofReal ε) {R₁ : ℝ} (hR₁0 : 0 ≤ R₁) (hR₁ : R₁ ≤ 11 / 16) (Dp : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3) (hw : ∀ᵐ (s : ℝ) ∂MeasureTheory.volume.restrict I, ∀ (i : Fin 3), MeasureTheory.LocallyIntegrableOn (fun (y : Foundation.Parabolic.Vec3) => Dp (y, s) i) (Foundation.Parabolic.vec3Ball 0 R₁) MeasureTheory.volume ∧ HasWeakPartialDerivOn (Foundation.Parabolic.vec3Ball 0 R₁) i (fun (y : Vec 3) => p (y, s)) fun (y : Vec 3) => Dp (y, s) i) (i : Fin 3) :

        The whole-carrier pressure-gradient time mass. Any weak slice derivative of the pressure on an origin carrier of radius at most 11/16 has 6/5 time mass at most an explicit absolute multiple of ε + 1.

        The collar coefficient is finite at every positive radius.

        The whole-carrier coefficient is finite.

        The threshold is the real value of the finite whole-carrier coefficient.

        theorem CKN.Core.Step4.theoremA_bslot_integral_instances (q τ C_CZ R₀ R₁ ε : ℝ) (KU KD : ENNReal) :
        5 / 2 < q → 25 / 3 ≤ τ → τ ≤ 25 → 0 ≤ C_CZ → bslotThresholdB ≤ C_CZ → τ = 25 / 3 ∧ R₀ = 11 / 16 ∧ R₁ = 43 / 64 ∨ τ = 25 ∧ R₀ = 5 / 8 ∧ R₁ = 19 / 32 → 0 < R₁ → R₁ < R₀ → R₀ < 3 / 4 → 0 ≤ ε → KU < ⊤ → KD < ⊤ → ∀ {Ω : Set Foundation.Parabolic.Vec3} {I : Set ℝ} {u : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3} {Du : Foundation.Parabolic.ParabolicPoint → Fin 3 → Foundation.Parabolic.Vec3} {p : Foundation.Parabolic.ParabolicPoint → ℝ} {f : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3}, IsSuitableWeakSolutionIntegrable Ω I q u Du p f → closure (Foundation.Parabolic.parabolicCylinder 0 0 1) ⊆ spaceTimeSet Ω I → (∀ (i : Fin 3), Foundation.Parabolic.Morrey.morreyNorm 3 τ ((Foundation.Parabolic.parabolicCylinder 0 0 R₀).indicator fun (z : Foundation.Parabolic.ParabolicPoint) => u z i) ≤ KU) → (∀ (i j : Fin 3), Foundation.Parabolic.Morrey.morreyNorm 2 (25 / 8) ((Foundation.Parabolic.parabolicCylinder 0 0 R₀).indicator fun (z : Foundation.Parabolic.ParabolicPoint) => Du z i j) ≤ KD) → ∫⁻ (z : Foundation.Parabolic.ParabolicPoint) in Foundation.Parabolic.parabolicCylinder 0 0 1, ENNReal.ofReal (Foundation.Parabolic.vec3EuclideanNorm (u z)) ^ 3 + ENNReal.ofReal |p z| ^ (3 / 2) + ENNReal.ofReal (Foundation.Parabolic.vec3EuclideanNorm (f z)) ^ q ≤ ENNReal.ofReal ε → ∀ (Dp : Foundation.Parabolic.ParabolicPoint → Foundation.Parabolic.Vec3), Measurable Dp → (∀ᵐ (s : ℝ) ∂MeasureTheory.volume.restrict I, ∀ (i : Fin 3), MeasureTheory.LocallyIntegrableOn (fun (y : Foundation.Parabolic.Vec3) => Dp (y, s) i) (Foundation.Parabolic.vec3Ball 0 R₁) MeasureTheory.volume ∧ HasWeakPartialDerivOn (Foundation.Parabolic.vec3Ball 0 R₁) i (fun (y : Vec 3) => p (y, s)) fun (y : Vec 3) => Dp (y, s) i) → ∀ (i : Fin 3), ∫⁻ (s : ℝ) in Set.Ioc (-R₁ ^ 2) 0, MeasureTheory.eLpNorm (fun (y : Foundation.Parabolic.Vec3) => Dp (y, s) i) (ENNReal.ofReal (6 / 5)) (MeasureTheory.volume.restrict (Foundation.Parabolic.vec3Ball 0 R₁)) ^ (6 / 5) ≤ ENNReal.ofReal (|C_CZ| + 1) * ENNReal.ofReal (|R₀| + |R₁| + |ε| + 1) * ENNReal.ofReal (max 1 ((2 * R₁ / (1 - R₁)) ^ (5 * (1 - 6 / 5 / min (1 / τ + 8 / 25)⁻¹ q))))

        The B slot of prop:bootstrap at the two endgame instances. Above the absolute threshold bslotThresholdB, the actual clipped L^{6/5} time mass of any weak pressure gradient on the origin carrier is paid by the numerical coefficient of prop:bootstrap, which carries no Morrey datum.