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Theorems · Theorem · measure theory

OrthonormalBasis.measurePreserving_measurableEquiv

∀ {ι : Type u_1} {F : Type u_3} [inst : NormedAddCommGroup F] [inst_1 : InnerProductSpace ℝ F]
  [inst_2 : MeasurableSpace F] [inst_3 : BorelSpace F] [inst_4 : Fintype ι] [inst_5 : FiniteDimensional ℝ F]
  (b : OrthonormalBasis ι ℝ F),
  MeasureTheory.MeasurePreserving (⇑b.measurableEquiv) MeasureTheory.volume MeasureTheory.volume

The measurable equivalence defined by an orthonormal basis is volume preserving.

Defined in
Mathlib.MeasureTheory.Measure.Haar.InnerProductSpace
Cited by
2 results in Mathlib
Foundations
Depth 265 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
NormedAddCommGroupInnerProductSpaceMeasurableSpaceBorelSpaceFintypeFiniteDimensional

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