OAI/Probability/SLE/Geometry/FiniteBoundaryRestart.lean

GitHub source file

4 declarations, 0 contain sorry, 0 declared as axioms

Finite-valued boundary charts introduce no measurable selection into an actual stopped restart: their boundary evaluations are determined by the interior map. The same past-measurable family realizes all future times.

  1. lemma OAI.SLEExactGauge.closed_halfplane_map_ext line 23
  2. lemma OAI.SLEExactGauge.finite_boundary_extension_family_measurable line 46
  3. theorem OAI.SLEExactGauge.source_stopped_finiteBoundaryPath_measurable line 61

    Source documentation

    Finite boundary evaluations are determined by the stopping-time past.

    theorem source_stopped_finiteBoundaryPath_measurable
        (hpublished : PublishedFiniteLoewnerBoundaryExtension)
        {Ω : Type*} [mΩ : MeasurableSpace Ω] (B : ℝ≥0 → Ω → ℝ)
        (hm : ∀ t, Measurable (B t)) (hc : ∀ ω, Continuous (fun t => B t ω))
        (κ : ℝ) (γ : Ω → ℝ≥0 → ℂ) (G F : Ω → ℝ≥0 → ℂ → ℂ)
        (hw : ∀ ω, IsCapacityTwoWitness (fun t => Real.sqrt κ * B t ω)
          (γ ω) (G ω) (F ω))
        (τ : Ω → ℝ≥0)
        (hτ : IsStoppingTime (Filtration.natural B (fun t => (hm t).stronglyMeasurable))
          (fun ω => (τ ω : WithTop ℝ≥0))) :
        ∃ Fb : Ω → C(closedHalfPlane, ℂ),
          Measurable[hτ.measurableSpace] Fb ∧
    …

    Mentions: OAI.SLEExactGauge.PublishedFiniteLoewnerBoundaryExtension, OAI.SLEExactGauge.IsCapacityTwoWitness, OAI.SLEExactGauge.closedHalfPlane

  4. theorem OAI.SLEExactGauge.source_measurable_finite_boundary_restart line 91

    Source documentation

    The actual future trace is the finite boundary image of the fresh trace, using a chart measurable in precisely the same stopped past.

    theorem source_measurable_finite_boundary_restart
        {Ω : Type*} [mΩ : MeasurableSpace Ω] {P : Measure Ω}
        (κ : ℝ) (hκ : 0 < κ) (hκ8 : κ < 8)
        (B : ℝ≥0 → Ω → ℝ) (hB : IsBrownianReal B P)
        (hm : ∀ t, Measurable (B t)) (hc : ∀ ω, Continuous (fun t => B t ω))
        (γ : Ω → ℝ≥0 → ℂ) (G F : Ω → ℝ≥0 → ℂ → ℂ)
        (hw : ∀ ω, IsCapacityTwoWitness (fun t => Real.sqrt κ * B t ω)
          (γ ω) (G ω) (F ω))
        (hpublished : PublishedFiniteLoewnerBoundaryExtension)
        (τ : Ω → ℝ≥0)
        (hτ : IsStoppingTime (Filtration.natural B (fun t => (hm t).stronglyMeasurable))
          (fun ω => (τ ω : WithTop ℝ≥0))) :
    …

    Mentions: OAI.SLEExactGauge.IsCapacityTwoWitness, OAI.SLEExactGauge.PublishedFiniteLoewnerBoundaryExtension