OAI/NumberTheory/EgyptianFractions/MajorArcDecomposition.lean
9 declarations, 0 contain sorry, 0 declared as axioms
- def
OAI.Problem337.MinorArc.centerSetline 11Source documentation
Reduced centers in the unit interval, with bounded denominator.
def centerSet (Q : ℕ) : Set ℚ := …
- theorem
OAI.Problem337.MinorArc.finite_centerSetline 15Source documentation
The reduced centers form a genuinely finite set.
theorem finite_centerSet (Q : ℕ) : (centerSet Q).Finite := by …
Mentions: OAI.Problem337.MinorArc.centerSet
- def
OAI.Problem337.MinorArc.centersline 29Source documentation
The canonical finite indexing set of reduced centers, with duplicates removed.
def centers (Q : ℕ) : Finset ℚ := (finite_centerSet Q).toFinset
Mentions: OAI.Problem337.MinorArc.finite_centerSet
- theorem
OAI.Problem337.MinorArc.mem_centersline 31 - theorem
OAI.Problem337.MinorArc.majorArcs_unit_eq_centers_unionline 37Source documentation
The exact finite reduced-center decomposition of the major region. Clipping keeps both endpoint arcs at zero and one without any convention loss.
theorem majorArcs_unit_eq_centers_union {Q N : ℕ} (hN : 2 ≤ N) : majorArcs Q N ∩ Set.Icc (0 : ℝ) 1 = ⋃ r ∈ centers Q, arc N r ∩ Set.Icc (0 : ℝ) 1 := by …Mentions: OAI.Problem337.MinorArc.majorArcs, OAI.Problem337.MinorArc.centers, OAI.Problem337.MinorArc.arc
- theorem
OAI.Problem337.MinorArc.centers_pairwiseDisjointline 52Source documentation
Distinct clipped reduced arcs are disjoint in the usual major-arc scale.
theorem centers_pairwiseDisjoint {Q N : ℕ} (hQN : 2 * Q < N) : Set.PairwiseDisjoint (↑(centers Q) : Set ℚ) (fun r => arc N r ∩ Set.Icc (0 : ℝ) 1) := by …Mentions: OAI.Problem337.MinorArc.centers, OAI.Problem337.MinorArc.arc
- theorem
OAI.Problem337.MinorArc.integral_majorArcs_eq_sumline 63Source documentation
Exact integration over major arcs is a finite sum over reduced centers. The only analytic premise is integrability of the actual integrand on
[0,1].theorem integral_majorArcs_eq_sum {Q N : ℕ} (hN : 2 ≤ N) (hQN : 2 * Q < N) (f : ℝ → ℂ) (hf : IntegrableOn f (Set.Icc (0 : ℝ) 1)) : (∫ x in majorArcs Q N ∩ Set.Icc (0 : ℝ) 1, f x) = ∑ r ∈ centers Q, ∫ x in arc N r ∩ Set.Icc (0 : ℝ) 1, f x := by …Mentions: OAI.Problem337.MinorArc.majorArcs, OAI.Problem337.MinorArc.centers, OAI.Problem337.MinorArc.arc
- theorem
OAI.Problem337.MinorArc.integral_unit_eq_major_sum_add_minorline 77Source documentation
The whole interval integral splits into the explicit reduced major-arc sum and its minor complement, with no implicit endpoint or overlap error.
theorem integral_unit_eq_major_sum_add_minor {Q N : ℕ} (hN : 2 ≤ N) (hQN : 2 * Q < N) (f : ℝ → ℂ) (hf : IntegrableOn f (Set.Icc (0 : ℝ) 1)) : (∫ x in Set.Icc (0 : ℝ) 1, f x) = (∑ r ∈ centers Q, ∫ x in arc N r ∩ Set.Icc (0 : ℝ) 1, f x) + ∫ x in Set.Icc (0 : ℝ) 1 \ majorArcs Q N, f x := by …Mentions: OAI.Problem337.MinorArc.centers, OAI.Problem337.MinorArc.arc, OAI.Problem337.MinorArc.majorArcs
- theorem
OAI.Problem337.MinorArc.integral_majorArcUnion_unit_eq_sumline 89Source documentation
The same exact decomposition using the finite major region in the prime/AP approximation API.
theorem integral_majorArcUnion_unit_eq_sum {Q N : ℕ} (hN : 2 ≤ N) (hQN : 2 * Q < N) (f : ℝ → ℂ) (hf : IntegrableOn f (Set.Icc (0 : ℝ) 1)) : (∫ x in ThreePrimeAnalysis.majorArcUnion Q (1 / (N : ℝ)) ∩ Set.Icc (0 : ℝ) 1, f x) = ∑ r ∈ centers Q, ∫ x in arc N r ∩ Set.Icc (0 : ℝ) 1, f x := by …Mentions: OAI.Problem337.ThreePrimeAnalysis.majorArcUnion, OAI.Problem337.MinorArc.centers, OAI.Problem337.MinorArc.arc