case h
α : Type u_1
β : Type ?u.1771367
γ : Type ?u.1771370
δ : Type ?u.1771373
m : MeasurableSpace α
μ ν : Measure α
s : Set α
hs : MeasurableSet s
f : α → ℝ≥0∞
t : Set α
ht : MeasurableSet t
⊢ ↑↑(Measure.restrict (withDensity μ f) s) t = ↑↑(withDensity (Measure.restrict μ s) f) t
α : Type u_1
β : Type ?u.1771367
γ : Type ?u.1771370
δ : Type ?u.1771373
m : MeasurableSpace α
μ ν : Measure α
s : Set α
hs : MeasurableSet s
f : α → ℝ≥0∞
⊢ Measure.restrict (withDensity μ f) s = withDensity (Measure.restrict μ s) f
ext1 t ht
no goals
case h
α : Type u_1
β : Type ?u.1771367
γ : Type ?u.1771370
δ : Type ?u.1771373
m : MeasurableSpace α
μ ν : Measure α
s : Set α
hs : MeasurableSet s
f : α → ℝ≥0∞
t : Set α
ht : MeasurableSet t
⊢ ↑↑(Measure.restrict (withDensity μ f) s) t = ↑↑(withDensity (Measure.restrict μ s) f) t
rw [restrict_apply ht, withDensity_apply _ ht, withDensity_apply _ (ht.inter hs),
  restrict_restrict ht]