OAI/NumberTheory/Ostmann/QuadraticCenter/UniformQuadraticGrid.lean

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One grid point simultaneously approximates every coefficient

  1. theorem OAI.Ostmann.eventual_uniform_quadratic_grid line 14

    Source documentation

    The quantifier order matters: the chosen grid point depends only on the original phase and scale, and works for all moduli and kernels.

    theorem eventual_uniform_quadratic_grid (H : ℝ) (Φ : 𝓢(ℝ, ℂ))
        (hH : 0 ≤ H) (hΦ : ∀ x : ℝ, H < x → Φ x = 0) :
        ∀ᶠ T : ℝ in atTop, ∀ θ R : ℝ,
          0 ≤ θ → θ ≤ 1 → 1 ≤ R → R ≤ Real.exp (14 * T) →
          ∃ j ∈ quadraticParameterGrid (Real.exp (14 * T)) (Real.exp (-200 * T)),
            0 ≤ quadraticGridPhase (Real.exp (-200 * T)) j ∧
            quadraticGridPhase (Real.exp (-200 * T)) j ≤ 1 ∧
            1 ≤ quadraticGridScale (Real.exp (-200 * T)) j ∧
            quadraticGridScale (Real.exp (-200 * T)) j ≤ Real.exp (14 * T) ∧
            |R - quadraticGridScale (Real.exp (-200 * T)) j| ≤ Real.exp (-200 * T) ∧
            ∀ (q s : ℕ) [NeZero q] (g : ZMod q → ℂ) (B : ℝ) (a : ZMod q) (v h₀ : ℝ),
              (∀ x, ‖g x‖ ≤ B) → 1 ≤ q → (q : ℝ) ≤ Real.exp T →
    …

    Mentions: OAI.Ostmann.quadraticParameterGrid, OAI.Ostmann.quadraticGridPhase, OAI.Ostmann.quadraticGridScale