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Theorems · Theorem · measure theory

MeasureTheory.Measure.exists_isOpen_everywherePosSubset_eq_sdiff

∀ {α : Type u_1} [inst : TopologicalSpace α] [inst_1 : MeasurableSpace α] (μ : MeasureTheory.Measure α) (s : Set α),
  ∃ u, IsOpen u ∧ μ.everywherePosSubset s = s \ u

The everywhere positive subset of a set is obtained by removing an open set.

Defined in
Mathlib.MeasureTheory.Measure.EverywherePos
Cited by
4 results in Mathlib
Foundations
Depth 171 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
TopologicalSpaceMeasurableSpace

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Cited by4

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