OAI/NumberTheory/Ostmann/Construction/DiagonalRegularLift.lean

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Regular-prime cancellation from the full higher-power modulus

  1. theorem OAI.Ostmann.diagonalRegularMultiplier_full_modulus line 13

    Source documentation

    Extra powers introduced when clearing the moving denominators have no cost when the signed integrand factors through the displayed CRT coordinates.

    theorem diagonalRegularMultiplier_full_modulus {I : Type*} [Fintype I] [DecidableEq I]
        (p : I → ℕ) [∀ i, Fact (p i).Prime] [∀ i, NeZero (p i)] [NeZero (∏ i, p i)]
        (hc : Pairwise (fun i j => (p i).Coprime (p j)))
        (r : ℕ) [NeZero r] [NeZero ((∏ i, p i) * r)] (hcop : (∏ i, p i).Coprime r)
        (M : ℕ) [NeZero M] (hd : (∏ i, p i) * r ∣ M)
        (active : I → Bool) (s : ℤ) (other : ∀ i, ZMod (p i))
        (hs : ∀ i, (s : ZMod (p i)) ≠ 0) (ho : ∀ i, other i ≠ 0)
        (g : ∀ i, ZMod (p i) → ℂ) (hg : ∀ i, g i 0 = 0)
        (henergy : ∀ i, (∑ x : ZMod (p i), ‖g i x‖ ^ 2) = p i)
        (F : ZMod r × (ZMod r)ˣ → ℂ) :
        (Fintype.card (ZMod M × (ZMod M)ˣ) : ℂ)⁻¹ *
          (∑ z, (diagonalRegularMultiplier p active s other g
    …

    Mentions: OAI.Ostmann.diagonalRegularMultiplier