OAI/Analysis/LipschitzHilbert/Estimates/StoppingScaleIntervals.lean

GitHub source file

8 declarations, 0 contain sorry, 0 declared as axioms

Stopping-level bands are intervals of the original source length index. This is the bridge from interval concentration to summation by parts over angular stopping levels.

  1. theorem OAI.LipschitzHilbert.antitone_stopping_band_interval line 17
  2. theorem OAI.LipschitzHilbert.sum_stopping_fibers line 52

    Source documentation

    Summing fibers of the actual stopping map loses neither packets nor multiplicity.

    theorem sum_stopping_fibers {N : ℕ} {E : Type*} [AddCommMonoid E]
        (stop : Fin N → ℕ) (f : Fin N → E) (a b : ℕ) :
        (∑ k ∈ Finset.Ico a b, ∑ j ∈ Finset.univ.filter (fun j => stop j = k), f j) =
          ∑ j ∈ Finset.univ.filter (fun j => a ≤ stop j ∧ stop j < b), f j := by
    …
  3. theorem OAI.LipschitzHilbert.SourceLabeledLattice.length_antitone line 75
  4. theorem OAI.LipschitzHilbert.SourceLabeledLattice.precision_monotone line 81
  5. theorem OAI.LipschitzHilbert.SourceLabeledLattice.stopping_antitone line 86
  6. def OAI.LipschitzHilbert.SourceLabeledLattice.rawBand line 95
  7. theorem OAI.LipschitzHilbert.SourceLabeledLattice.rawInterval_eq_band_sum line 101
  8. theorem OAI.LipschitzHilbert.SourceLabeledLattice.stopping_band_eq_rawInterval line 115

    Source documentation

    Every partial sum over a band of angular stopping levels is one of the source intervals already controlled by the concentration theorem.

    theorem stopping_band_eq_rawInterval (P : SourceLabeledLattice N κ Label Item)
        (coeff : ∀ j (l : P.labels j), Item j l → EuclideanSpace ℂ κ)
        (i : Fin 3) (stop : Fin N → ℕ) (hstop : Antitone stop)
        (a b : ℕ) (x y : ℝ) :
        ∃ lower upper : ℕ, lower ≤ upper ∧ upper ≤ N ∧
          (∑ j ∈ Finset.univ.filter (fun j => a ≤ stop j ∧ stop j < b),
            P.rawBand coeff i j x y) = P.rawInterval coeff i lower upper x y := by
    …

    Mentions: OAI.LipschitzHilbert.SourceLabeledLattice