Theorem: Trivialization.contMDiffOn_symm_trans
File: Mathlib/Geometry/Manifold/VectorBundle/Basic.lean

tactic: have Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) (e.baseSet ∩ e'.baseSet) := fun x hx ↦
  ⟨e.mem_target.1 hx.1, e'.mem_target.1 hx.2⟩
state_before: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
⊢ ContMDiffOn (IB.prod 𝓘(𝕜, F)) (IB.prod 𝓘(𝕜, F)) n (↑(e.symm ≫ₕ e'.toPartialHomeomorph)) (e.target ∩ e'.target)
state_after: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) (e.baseSet ∩ e'.baseSet)
⊢ ContMDiffOn (IB.prod 𝓘(𝕜, F)) (IB.prod 𝓘(𝕜, F)) n (↑(e.symm ≫ₕ e'.toPartialHomeomorph)) (e.target ∩ e'.target)

tactic: rw [mapsTo_inter] at Hmaps
state_before: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) (e.baseSet ∩ e'.baseSet)
⊢ ContMDiffOn (IB.prod 𝓘(𝕜, F)) (IB.prod 𝓘(𝕜, F)) n (↑(e.symm ≫ₕ e'.toPartialHomeomorph)) (e.target ∩ e'.target)
state_after: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
⊢ ContMDiffOn (IB.prod 𝓘(𝕜, F)) (IB.prod 𝓘(𝕜, F)) n (↑(e.symm ≫ₕ e'.toPartialHomeomorph)) (e.target ∩ e'.target)

tactic: refine (contMDiffOn_fst.prod_mk
  (contMDiffOn_fst.coordChange contMDiffOn_snd Hmaps.1 Hmaps.2)).congr ?_
state_before: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
⊢ ContMDiffOn (IB.prod 𝓘(𝕜, F)) (IB.prod 𝓘(𝕜, F)) n (↑(e.symm ≫ₕ e'.toPartialHomeomorph)) (e.target ∩ e'.target)
state_after: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
⊢ ∀ y ∈ e.target ∩ e'.target, ↑(e.symm ≫ₕ e'.toPartialHomeomorph) y = (y.1, e.coordChange e' y.1 y.2)

tactic: rintro ⟨b, x⟩ hb
state_before: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
⊢ ∀ y ∈ e.target ∩ e'.target, ↑(e.symm ≫ₕ e'.toPartialHomeomorph) y = (y.1, e.coordChange e' y.1 y.2)
state_after: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
⊢ ↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x) = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2)

tactic: refine Prod.ext ?_ rfl
state_before: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
⊢ ↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x) = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2)
state_after: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
⊢ (↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x)).1 = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2).1

tactic: have : (e.toPartialHomeomorph.symm (b, x)).1 ∈ e'.baseSet := by
  simp_all only [Trivialization.mem_target, mfld_simps]
state_before: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
⊢ (↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x)).1 = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2).1
state_after: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
this : (↑e.symm (b, x)).proj ∈ e'.baseSet
⊢ (↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x)).1 = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2).1

tactic: exact (e'.coe_fst' this).trans (e.proj_symm_apply hb.1)
state_before: case mk
𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
this : (↑e.symm (b, x)).proj ∈ e'.baseSet
⊢ (↑(e.symm ≫ₕ e'.toPartialHomeomorph) (b, x)).1 = ((b, x).1, e.coordChange e' (b, x).1 (b, x).2).1
state_after: no goals

tactic: simp_all only [Trivialization.mem_target, mfld_simps]
state_before: 𝕜 : Type u_1
B : Type u_2
B' : Type u_3
F : Type u_4
M : Type u_5
E : B → Type u_6
inst✝²² : NontriviallyNormedField 𝕜
EB : Type u_7
inst✝²¹ : NormedAddCommGroup EB
inst✝²⁰ : NormedSpace 𝕜 EB
HB : Type u_8
inst✝¹⁹ : TopologicalSpace HB
IB : ModelWithCorners 𝕜 EB HB
inst✝¹⁸ : TopologicalSpace B
inst✝¹⁷ : ChartedSpace HB B
inst✝¹⁶ : SmoothManifoldWithCorners IB B
EM : Type u_9
inst✝¹⁵ : NormedAddCommGroup EM
inst✝¹⁴ : NormedSpace 𝕜 EM
HM : Type u_10
inst✝¹³ : TopologicalSpace HM
IM : ModelWithCorners 𝕜 EM HM
inst✝¹² : TopologicalSpace M
inst✝¹¹ : ChartedSpace HM M
Is : SmoothManifoldWithCorners IM M
n : ℕ∞
inst✝¹⁰ : (x : B) → AddCommMonoid (E x)
inst✝⁹ : (x : B) → Module 𝕜 (E x)
inst✝⁸ : NormedAddCommGroup F
inst✝⁷ : NormedSpace 𝕜 F
inst✝⁶ : TopologicalSpace (TotalSpace F E)
inst✝⁵ : (x : B) → TopologicalSpace (E x)
inst✝⁴ : FiberBundle F E
inst✝³ : VectorBundle 𝕜 F E
inst✝² : SmoothVectorBundle F E IB
e e' : Trivialization F TotalSpace.proj
inst✝¹ : MemTrivializationAtlas e
inst✝ : MemTrivializationAtlas e'
s : Set M
f : M → B
g : M → F
x✝ : M
Hmaps : MapsTo Prod.fst (e.target ∩ e'.target) e.baseSet ∧ MapsTo Prod.fst (e.target ∩ e'.target) e'.baseSet
b : B
x : F
hb : (b, x) ∈ e.target ∩ e'.target
⊢ (↑e.symm (b, x)).proj ∈ e'.baseSet
state_after: no goals