Theorems · Theorem · probability

ProbabilityTheory.Kernel.indepFun_iff_measure_inter_preimage_eq_mul

∀ {α : Type u_1} {Ω : Type u_2} {β : Type u_4} {β' : Type u_5} {mα : MeasurableSpace α} {mΩ : MeasurableSpace Ω}
  {κ : ProbabilityTheory.Kernel α Ω} {μ : MeasureTheory.Measure α} {f : Ω → β} {g : Ω → β'} {mβ : MeasurableSpace β}
  {mβ' : MeasurableSpace β'},
  ProbabilityTheory.Kernel.IndepFun f g κ μ ↔
    ∀ (s : Set β) (t : Set β'),
      MeasurableSet s → MeasurableSet t → ∀ᵐ (a : α) ∂μ, (κ a) (f ⁻¹' s ∩ g ⁻¹' t) = (κ a) (f ⁻¹' s) * (κ a) (g ⁻¹' t)

Defined in

Mathlib.Probability.Independence.Kernel.IndepFun

Cited by

3 results in Mathlib

Foundations

Depth 179 from the axioms · uses propext, Classical.choice, Quot.sound