OAI/NumberTheory/TwoPoint/Halasz/HalaszSparseSmallPrimes.lean

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The small-prime range of the published sparse estimate follows from Chebyshev and finite weighted Gram duality. Only larger log Y requires the oscillatory prime estimate.

  1. lemma OAI.TwoPointCorrelations.halasz_dyadic_prime_log_mass line 14
  2. theorem OAI.TwoPointCorrelations.halasz_sparse_prime_card_bound line 27
  3. lemma OAI.TwoPointCorrelations.halasz_sparse_small_scale line 59
  4. theorem OAI.TwoPointCorrelations.halasz_sparse_small_primes line 75

    Source documentation

    This is the exact sparse-input inequality in the small log Y range.

    theorem halasz_sparse_small_primes {L Y : ℝ} (hL : 1 ≤ L) (hY : 2 ≤ Y)
        (hscale : Real.log Y ≤ 2*L^(3/4:ℝ)*Real.log L)
        (P : Finset ℕ) (hP : ∀ p ∈ P, p.Prime ∧ Y ≤ (p:ℝ) ∧ (p:ℝ) ≤ 2*Y)
        (a : ℕ → ℂ) (S : Finset ℝ)
        (hsep : ∀ t ∈ S, ∀ s ∈ S, t≠s → 1 ≤ |t-s|) :
        (∑ t ∈ S, ‖mrtExponentialPolynomial P a (fun p => -Real.log (p:ℝ)) t‖^2) ≤
          (2*Real.log 4)*(Y+(S.card:ℝ)*Y*Real.exp (-Real.log Y/L^(3/4:ℝ))*L^2)*
            ∑ p ∈ P, ‖a p‖^2/Real.log (p:ℝ) := by
    …

    Mentions: OAI.TwoPointCorrelations.mrtExponentialPolynomial