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LeanPool.EscauriazaSereginSverak.Linear.BUShortExtendedGrowth

Quadratic growth and local energy on the extended cylinder #

The physical growth hypothesis supplies local velocity energy after the short-time rescaling.

Quadratic spatial growth transfers through the extended short-time parabolic rescaling.

theorem ESS.bu_short_extended_local_quadratic_l2 (M scale : ℝ) (hscale : 0 < scale) (hscale1 : scale ≤ 1) (w : CKN.Foundation.Parabolic.ParabolicPoint → CKN.Foundation.Parabolic.Vec3) (Dw : CKN.Foundation.Parabolic.ParabolicPoint → Fin 3 → CKN.Foundation.Parabolic.Vec3) (D2w : CKN.Foundation.Parabolic.ParabolicPoint → Fin 3 → Fin 3 → CKN.Foundation.Parabolic.Vec3) (Dtw : CKN.Foundation.Parabolic.ParabolicPoint → CKN.Foundation.Parabolic.Vec3) (hweak : CKN.HasSpaceTimeWeakDerivs {x : CKN.Foundation.Parabolic.Vec3 | 0 < x 2} (Set.Ioo 0 1) w Dw D2w Dtw) (hL2 : ∀ S ⊆ CKN.spaceTimeSet {x : CKN.Foundation.Parabolic.Vec3 | 0 < x 2} (Set.Ioo 0 1), Bornology.IsBounded S → ∫⁻ (z : CKN.Foundation.Parabolic.ParabolicPoint) in S, ‖Dw z‖ₑ ^ 2 + ‖D2w z‖ₑ ^ 2 + ‖Dtw z‖ₑ ^ 2 < ⊤) (hgrowth : ∀ z ∈ CKN.spaceTimeSet {x : CKN.Foundation.Parabolic.Vec3 | 0 < x 2} (Set.Ioo 0 1), CKN.Foundation.Parabolic.vec3EuclideanNorm (w z) ≤ Real.exp (M * CKN.Foundation.Parabolic.vec3EuclideanNorm z.1 ^ 2)) (S : Set CKN.Foundation.Parabolic.ParabolicPoint) :
S ⊆ CKN.spaceTimeSet {x : CKN.Foundation.Parabolic.Vec3 | 0 < x 2} (Set.Ioo (1 / 2) (3 / 2)) → Bornology.IsBounded S → ∫⁻ (z : CKN.Foundation.Parabolic.ParabolicPoint) in S, ‖buAffineField (-scale ^ 2 / 2) scale w z‖ₑ ^ 2 + ‖buAffineDw (-scale ^ 2 / 2) scale Dw z‖ₑ ^ 2 + ‖buAffineD2w (-scale ^ 2 / 2) scale D2w z‖ₑ ^ 2 + ‖buAffineDtw (-scale ^ 2 / 2) scale Dtw z‖ₑ ^ 2 < ⊤

The extended short-time cylinder has finite full quadratic data on every bounded measurable subset.