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LeanPool.CaffarelliKohnNirenberg.Core.Endgame.WideInitialMorrey

Initial Morrey estimates on a larger interior cylinder #

The initial velocity, pressure, and gradient estimates extend by zero from the cylinder of radius eleven sixteenths. The numerical bounds agree with the smaller-cylinder estimates; the gradient covering number is selected before the domain and solution.

Uniform scalar velocity Morrey control follows from one-sided decay and the original unit-cylinder smallness hypothesis.

Uniform pressure Morrey control follows from one-sided decay and the original unit-cylinder smallness hypothesis.

Uniform decay gives a quantitative gradient Morrey bound. The covering number is chosen before all domains and solutions.

theorem CKN.Core.Endgame.wide_initial_morrey_of_decay (M r₀ ε₀ : ℝ) (hM : 0 ≤ M) (hr₀ : 0 < r₀) (hrquarter : r₀ ≤ 1 / 4) :
∃ (N : ℕ), ∀ {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}, IsSuitableWeakSolutionIntegrable Ω I q u Du p f → closure (Foundation.Parabolic.parabolicCylinder 0 0 1) ⊆ spaceTimeSet Ω I → ∫⁻ (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 ε₀ → (∀ z ∈ Foundation.Parabolic.parabolicCylinder 0 0 (3 / 4), ∀ (r : ℝ), 0 < r → r ≤ r₀ → max (max (alpha u z r) (beta u Du z r)) (delta p z r ^ 2) ≤ M * r ^ (2 / 5)) → (∀ (i : Fin 3), Foundation.Parabolic.Morrey.morreyNorm 3 (25 / 3) ((Foundation.Parabolic.parabolicCylinder 0 0 (11 / 16)).indicator fun (z : Foundation.Parabolic.ParabolicPoint) => u z i) ≤ oneSidedVelocityMorreyBound M r₀ ε₀) ∧ (∀ (i j : Fin 3), Foundation.Parabolic.Morrey.morreyNorm 2 (25 / 8) ((Foundation.Parabolic.parabolicCylinder 0 0 (11 / 16)).indicator fun (z : Foundation.Parabolic.ParabolicPoint) => Du z i j) ≤ oneSidedGradientMorreyBound M r₀ N) ∧ Foundation.Parabolic.Morrey.morreyNorm (3 / 2) (25 / 8) ((Foundation.Parabolic.parabolicCylinder 0 0 (11 / 16)).indicator p) ≤ oneSidedPressureMorreyBound M r₀ ε₀

The three initial Morrey estimates on the larger interior cylinder have uniform numerical bounds and a covering number independent of the solution.