Actual higher fast-velocity jets from strictly lower coarse gradient levels.
theorem
AVenhance.Infra.Section4.amnr_fastVelocity_mixed_abs_le_of_lower_gradient_bounds
{β C Cb : ℝ}
(I : Ingredients β)
{Φ : ℕ → ℝ → Homogenization.Vec 2 → ℝ}
(hΦ : IsStreamSeq I Φ)
(hreg : StreamRegularityBounds C I Φ)
{m : ℕ}
(hm : 1 ≤ m)
(hCb : 0 ≤ Cb)
(α : List (Fin 2))
(n : ℕ)
(hbudget : α.length + 1 + 2 * n ≤ Nstar β)
(i : Fin 2)
(z : AmnrSpace)
(hBb :
∀ (p q : Fin 2) (η : List (Fin 2)),
∀ r < n,
η.length + 2 * r + 2 ≤ Nstar β →
|amnrWord (fun (y : AmnrSpace) => streamVel (Φ (m - 1)) y.1 y.2) (amnrMixedWord η r)
(amnrVelocityGradient (fun (y : AmnrSpace) => streamVel (Φ (m - 1)) y.1 y.2) p q) z| ≤ Cb * AVenhance.a β I.Λ m * (epsilon β I.Λ m)⁻¹ ^ η.length * AVenhance.a β I.Λ m ^ r)
:
|amnrWord (fun (y : AmnrSpace) => streamVel (Φ (m - 1)) y.1 y.2) (amnrMixedWord α n)
(fun (y : AmnrSpace) => streamVel (Φ m) y.1 y.2 i - streamVel (Φ (m - 1)) y.1 y.2 i) z| ≤ (1 + 2 ^ (Nstar β + 1) * Cb) ^ n * amnrStreamMixedCurrentConstant I * epsilon β I.Λ m ^ (β - 1) * (epsilon β I.Λ m)⁻¹ ^ α.length * a β I.Λ m ^ n
The actual fast velocity has every mixed jet from lower material levels of the coarse gradient. The input remains explicit in this conditional induction step; its transported scalar and every commutator are proved.