OAI/NumberTheory/Ostmann/Arithmetic/BulkCoordinateEnumeration.lean

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2 declarations, 0 contain sorry, 0 declared as axioms

Enumerating the actual bulk slots leaves their product law unchanged

  1. theorem OAI.Ostmann.bulkCoordinateInsert_reindex line 11
  2. theorem OAI.Ostmann.BulkIntegrand.selected_bulk_integral_enum line 30

    Source documentation

    The finite enumeration may be chosen for the proof while the product integral remains indexed by the original tree-and-word bulk coordinates.

    theorem BulkIntegrand.selected_bulk_integral_enum {σ J : Type*} [Fintype σ] [Fintype J]
        {k : ℕ} (f : BulkIntegrand σ) (base : σ → ℝ) (e : J ↪ σ) (g : Fin k ≃ J)
        (μ : σ → Measure ℝ) [∀ i, IsFiniteMeasure (μ i)] (y : J → ℝ) :
        f.averages μ ((List.finRange k).map (fun j => e (g j))) (bulkCoordinateInsert base e y) =
          ∫ z, f (bulkCoordinateInsert base e z) ∂Measure.pi (fun j => μ (e j)) := by
    …

    Mentions: OAI.Ostmann.BulkIntegrand, OAI.Ostmann.bulkCoordinateInsert