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Theorems · Definition · measure theory

MeasureTheory.Measure.IsEverywherePos

{α : Type u_1} → [TopologicalSpace α] → [inst : MeasurableSpace α] → MeasureTheory.Measure α → Set α → Prop

A set s is everywhere positive (also called self-supporting) with respect to a measure μ if it has positive measure around each of its points, i.e., if all neighborhoods n of points of s satisfy μ (s ∩ n) > 0.

Defined in
Mathlib.MeasureTheory.Measure.EverywherePos
Cited by
13 results in Mathlib
Foundations
Depth 170 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
TopologicalSpaceMeasurableSpace

Around this declaration

Dashed lines are statement dependencies; solid lines are citations in proofs.

MeasureTheory.Measure.IsEverywherePos.of_forall_exists_nhds_eq · cited by 3IsEverywherePos.of_forall…IsOpen.isEverywherePos · cited by 2IsOpen.isEverywherePosMeasureTheory.Measure.IsEverywherePos.smul_measure_nnreal · cited by 2IsEverywherePos.smul_meas…MeasureTheory.Measure.isEverywherePos_everywherePosSubset_of_measure_ne_top · cited by 2Measure.isEverywherePos_e…MeasureTheory.Measure.innerRegularWRT_preimage_one_hasCompactSupport_measure_ne_top_of_addGroup · cited by 1Measure.innerRegularWRT_p…MeasureTheory.Measure.innerRegularWRT_preimage_one_hasCompactSupport_measure_ne_top_of_group · cited by 1Measure.innerRegularWRT_p…MeasureTheory.Measure.measure_isAddHaarMeasure_eq_smul_of_isEverywherePos · cited by 1Measure.measure_isAddHaar…MeasureTheory.Measure.IsEverywherePos.IsGdelta_of_isMulLeftInvariant · cited by 1IsEverywherePos.IsGdelta_…MeasureTheory.Measure.IsEverywherePos.IsGdelta_of_isAddLeftInvariant · cited by 1IsEverywherePos.IsGdelta_…MeasureTheory.Measure.IsEverywherePos.smul_measure · cited by 1IsEverywherePos.smul_meas…MeasureTheory.Measure.measure_isHaarMeasure_eq_smul_of_isEverywherePos · cited by 1Measure.measure_isHaarMea…MeasureTheory.Measure.isEverywherePos_everywherePosSubset · cited by 0Measure.isEverywherePos_e…MeasureTheory.Measure.isEverywherePos_iff_of_forall_exists_nhds_eq · cited by 0Measure.isEverywherePos_i…DFunLike.coe · cited by 62936DFunLike.coeSet · cited by 53352SetTopologicalSpace · cited by 24529TopologicalSpaceMeasurableSpace · cited by 13106MeasurableSpaceMeasureTheory.Measure · cited by 10939MeasureTheory.MeasurenhdsWithin · cited by 1912nhdsWithinMeasure.IsEverywherePosCITED BYCITES

Cites6

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Cited by13

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