Theorem: MeasureTheory.Lp.ae_eq_zero_of_forall_setIntegral_eq_zero'
File: Mathlib/MeasureTheory/Function/ConditionalExpectation/Unique.lean

Proof steps:
state_before: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
⊢ ↑↑f =ᶠ[ae μ] 0
state_after: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
⊢ ↑↑f =ᶠ[ae μ] 0
tactic: let f_meas : lpMeas E' 𝕜 m p μ := ⟨f, hf_meas⟩
state_before: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
⊢ ↑↑f =ᶠ[ae μ] 0
state_after: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ↑↑f =ᶠ[ae μ] 0
tactic: have hf_f_meas : f =ᵐ[μ] f_meas := by simp only [Subtype.coe_mk]; rfl
state_before: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ↑↑f =ᶠ[ae μ] 0
state_after: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ↑↑↑f_meas =ᶠ[ae μ] 0
tactic: refine hf_f_meas.trans ?_
state_before: α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ↑↑↑f_meas =ᶠ[ae μ] 0
state_after: case refine_1
α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑↑f_meas) s μ

case refine_2
α : Type u_1
E' : Type u_2
F' : Type u_3
𝕜 : Type u_4
p : ℝ≥0∞
m m0 : MeasurableSpace α
μ : Measure α
inst✝⁸ : RCLike 𝕜
inst✝⁷ : NormedAddCommGroup E'
inst✝⁶ : InnerProductSpace 𝕜 E'
inst✝⁵ : CompleteSpace E'
inst✝⁴ : NormedSpace ℝ E'
inst✝³ : NormedAddCommGroup F'
inst✝² : NormedSpace 𝕜 F'
inst✝¹ : NormedSpace ℝ F'
inst✝ : CompleteSpace F'
hm : m ≤ m0
f : ↥(Lp E' p μ)
hp_ne_zero : p ≠ 0
hp_ne_top : p ≠ ⊤
hf_int_finite : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → IntegrableOn (↑↑f) s μ
hf_zero : ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑f x ∂μ = 0
hf_meas : AEStronglyMeasurable' m (↑↑f) μ
f_meas : ↥(lpMeas E' 𝕜 m p μ) := ⟨f, hf_meas⟩
hf_f_meas : ↑↑f =ᶠ[ae μ] ↑↑↑f_meas
⊢ ∀ (s : Set α), MeasurableSet s → μ s < ⊤ → ∫ (x : α) in s, ↑↑↑f_meas x ∂μ = 0
tactic: refine lpMeas.ae_eq_zero_of_forall_setIntegral_eq_zero hm f_meas hp_ne_zero hp_ne_top ?_ ?_