OAI/NumberTheory/Ostmann/Quadratic/QuadraticCompactCutoff.lean
5 declarations, 0 contain sorry, 0 declared as axioms
Exact finite cutoffs for compactly supported quadratic transforms
- def
OAI.Ostmann.quadraticCompactCutoffline 12 - theorem
OAI.Ostmann.quadraticCompactCutoff_specline 15 - theorem
OAI.Ostmann.quadraticDensityTerm_mem_cutoffline 27 - def
OAI.Ostmann.positiveQuadraticSumline 47 - theorem
OAI.Ostmann.positiveQuadraticSum_eq_cutoffline 54Source documentation
Compact support makes the positive quadratic series exactly finite, with one common cutoff for every index in the dyadic segment.
theorem positiveQuadraticSum_eq_cutoff {q : ℕ} [NeZero q] (g : ZMod q → ℂ) (a : ZMod q) (θ : ℝ) (Φ : 𝓢(ℝ, ℂ)) (R v C : ℝ) (N s : ℕ) (hR : 0 < R) (hv : 0 < v) (hN : 0 < N) (hs : N ≤ s) (hΦ : ∀ x : ℝ, C < x → Φ x = 0) : positiveQuadraticSum g a θ Φ R v s = quadraticDensitySum g (quadraticCompactCutoff q R v C N) a θ Φ R v s := by …Mentions: OAI.Ostmann.positiveQuadraticSum, OAI.Ostmann.quadraticDensitySum, OAI.Ostmann.quadraticCompactCutoff