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Merge master into nightly-testing
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leanprover-community-mathlib4-bot committed Dec 6, 2023
2 parents da80ad9 + a357dd5 commit e7aebe0
Showing 1 changed file with 2 additions and 2 deletions.
4 changes: 2 additions & 2 deletions Mathlib/MeasureTheory/Measure/FiniteMeasureProd.lean
Original file line number Diff line number Diff line change
Expand Up @@ -89,7 +89,7 @@ lemma map_prod_map {α' : Type*} [MeasurableSpace α'] {β' : Type*} [Measurable
(μ.map f).prod (ν.map g) = (μ.prod ν).map (Prod.map f g) := by
apply Subtype.ext
simp only [val_eq_toMeasure, toMeasure_prod, toMeasure_map]
rw [Measure.map_prod_map _ _ f_mble g_mble] <;> infer_instance
rw [Measure.map_prod_map _ _ f_mble g_mble]

lemma prod_swap : (μ.prod ν).map Prod.swap = ν.prod μ := by
apply Subtype.ext
Expand Down Expand Up @@ -142,7 +142,7 @@ lemma map_prod_map {α' : Type*} [MeasurableSpace α'] {β' : Type*} [Measurable
= (μ.prod ν).map (f_mble.prod_map g_mble).aemeasurable := by
apply Subtype.ext
simp only [val_eq_to_measure, toMeasure_prod, toMeasure_map]
rw [Measure.map_prod_map _ _ f_mble g_mble] <;> infer_instance
rw [Measure.map_prod_map _ _ f_mble g_mble]

lemma prod_swap : (μ.prod ν).map measurable_swap.aemeasurable = ν.prod μ := by
apply Subtype.ext
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