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Theorems · Theorem · measure theory

MeasureTheory.Measure.restrict_toOuterMeasure_eq_toOuterMeasure_restrict

∀ {α : Type u_2} {m0 : MeasurableSpace α} {μ : MeasureTheory.Measure α} {s : Set α},
  MeasurableSet s → (μ.restrict s).toOuterMeasure = (MeasureTheory.OuterMeasure.restrict s) μ.toOuterMeasure

This lemma shows that restrict and toOuterMeasure commute. Note that the LHS has a restrict on measures and the RHS has a restrict on outer measures.

Defined in
Mathlib.MeasureTheory.Measure.Restrict
Cited by
2 results in Mathlib
Foundations
Depth 193 from the axioms · uses propext, Classical.choice, Quot.sound

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