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LeanPool.AnomalousDiffusion.AVenhance.Statements.Section4.Amnr

Public statement.

def AVenhance.Ingredients.Amnr {β : ℝ} (I : Ingredients β) {Φ : ℕ → ℝ → Homogenization.Vec 2 → ℝ} (hΦ : IsStreamSeq I Φ) (m : ℕ) (κm : ℝ) (n : ℕ) (Tm1 : ℝ → Homogenization.Vec 2 → ℝ) :
ℕ → ℝ → Homogenization.Vec 2 → Fin 2 → Fin 2 → Fin 2 → ℝ

The 3-tensors 𝐀_{m,n,r}^{ijk} of e.A.mnr.def (4188-4200), Tm1 = T_{m-1}, κm = κ_m: A_{n,0}^{ijk} = -L_{n}(t) ∑_l ξ̂_{m,l} F_l^{ji} ∑_p F_l^{kp} ∂_pT, where F_l = (∇X_{m-1,l})∘X⁻¹_{m-1,l} (flowGrad); the left factor F_l^{ji} is the left Jacobian that replaces the source's δ_{ij} (see doc/errata.pdf), A_{r+1}^{ijk} = (∂_t + b_{m-1}·∇) A_r^{ijk} - ∂_ℓ b^i_{m-1} A_r^{ℓjk}. SIGN OF THE LAST TERM: the source prints +; the minus sign is the one for which (∂_t + b·∇) ∂_i A^{ijk} = ∂_i A_{r+1}^{ijk} (checked symbolically, ∇·b = 0).

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