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Theorems · Theorem · measure theory

AEMeasurable.nnreal_tsum

Deprecated since 2026-04-30Mathlib marks this declaration as deprecated.

∀ {α : Type u_5} {x : MeasurableSpace α} {ι : Type u_6} [Countable ι] {f : ι → α → NNReal}
  {μ : MeasureTheory.Measure α}, (∀ (i : ι), AEMeasurable (f i) μ) → AEMeasurable (fun x => ∑' (i : ι), f i x) μ
Defined in
Mathlib.MeasureTheory.Constructions.BorelSpace.Real
Cited by
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Foundations
Depth 181 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
Countable

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