Theorem: ContMDiffWithinAt.coordChange
File: Mathlib/Geometry/Manifold/VectorBundle/Basic.lean

Proof steps:
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
hf : ContMDiffWithinAt IM IB n f s x
hg : ContMDiffWithinAt IM 𝓘(𝕜, F) n g s x
he : f x ∈ e.baseSet
he' : f x ∈ e'.baseSet
⊢ ContMDiffWithinAt IM 𝓘(𝕜, F) n (fun y => e.coordChange e' (f y) (g y)) s x
state_after: case refine_1
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
hf : ContMDiffWithinAt IM IB n f s x
hg : ContMDiffWithinAt IM 𝓘(𝕜, F) n g s x
he : f x ∈ e.baseSet
he' : f x ∈ e'.baseSet
⊢ (fun y => e.coordChange e' (f y) (g y)) =ᶠ[𝓝[s] x] fun x => ↑(Trivialization.coordChangeL 𝕜 e e' (f x)) (g x)

case refine_2
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
hf : ContMDiffWithinAt IM IB n f s x
hg : ContMDiffWithinAt IM 𝓘(𝕜, F) n g s x
he : f x ∈ e.baseSet
he' : f x ∈ e'.baseSet
⊢ e.coordChange e' (f x) (g x) = ↑(Trivialization.coordChangeL 𝕜 e e' (f x)) (g x)
tactic: refine ((hf.coordChangeL he he').clm_apply hg).congr_of_eventuallyEq ?_ ?_