OAI/GroupTheory/PolycyclicRecognition/Algebra/ConditionalKernelConsistency.lean

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Consistency of conditional component measures

A conditional probability is concentrated where its own conditional probability has the same value. Only a countable determining family of measurable sets is used to obtain one simultaneous almost-everywhere statement.

  1. theorem OAI.PolycyclicRecognition.factorConditionalKernel_consistent line 24

    Source documentation

    Equality of measures, simultaneously on almost every fiber.

    theorem factorConditionalKernel_consistent :
        ∀ᵐ y ∂μ.map f, ∀ᵐ x ∂factorConditionalKernel μ f hf y,
          factorConditionalKernel μ f hf (f x) = factorConditionalKernel μ f hf y := by
    …

    Mentions: OAI.PolycyclicRecognition.factorConditionalKernel

  2. theorem OAI.PolycyclicRecognition.invariantConditionalMeasures_consistent line 37

    Source documentation

    The same consistency statement on the original action space.

    theorem invariantConditionalMeasures_consistent :
        ∀ᵐ x ∂μ, ∀ᵐ y ∂invariantConditionalMeasures (G := G) μ x,
    …

    Mentions: OAI.PolycyclicRecognition.invariantConditionalMeasures