mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Geometry.Manifold.LocalInvariantProperties

Goal state before:
pp: H₁ : Type u_6
inst✝⁷ : TopologicalSpace H₁
H₂ : Type u_7
inst✝⁶ : TopologicalSpace H₂
H₃ : Type u_8
inst✝⁵ : TopologicalSpace H₃
inst✝⁴ : ChartedSpace H₁ H₂
inst✝³ : ChartedSpace H₂ H₃
G₁ : StructureGroupoid H₁
inst✝² : HasGroupoid H₂ G₁
inst✝¹ : ClosedUnderRestriction G₁
G₂ : StructureGroupoid H₂
inst✝ : HasGroupoid H₃ G₂
H : ∀ e ∈ G₂, LiftPropOn G₁.IsLocalStructomorphWithinAt (↑e) e.source
x✝ : ChartedSpace H₁ H₃ := ChartedSpace.comp H₁ H₂ H₃
e : OpenPartialHomeomorph H₃ H₂
he : e ∈ atlas H₂ H₃
f : OpenPartialHomeomorph H₂ H₁
hf : f ∈ atlas H₁ H₂
e' : OpenPartialHomeomorph H₃ H₂
he' : e' ∈ atlas H₂ H₃
f' : OpenPartialHomeomorph H₂ H₁
hf' : f' ∈ atlas H₁ H₂
x : H₁
hx : (x ∈ f.target ∧ ↑f.symm x ∈ e.target) ∧ ↑e.symm (↑f.symm x) ∈ e'.source ∧ ↑e' (↑e.symm (↑f.symm x)) ∈ f'.source
hxs : x ∈ ↑f.symm ⁻¹' (e.symm ≫ₕ e').source
hxs' : x ∈ f.target ∩ ↑f.symm ⁻¹' ((e.symm ≫ₕ e').source ∩ ↑(e.symm ≫ₕ e') ⁻¹' f'.source)
φ : OpenPartialHomeomorph H₁ H₁
hφG₁ : φ ∈ G₁
hφ : EqOn (↑((f.symm ≫ₕ e.symm ≫ₕ e') ≫ₕ f')) (↑φ.toPartialEquiv) (↑f.symm ⁻¹' (e.symm ≫ₕ e').source ∩ φ.source)
hφ_dom : x ∈ φ.source
⊢ ∃ s, IsOpen[inst✝⁷] s ∧ x ∈ s ∧ ((e ≫ₕ f).symm ≫ₕ e' ≫ₕ f').restr s ∈ G₁

Tactic:
OpenPartialHomeomorph.trans_assoc

Goal state after:
H₁ : Type u_6
inst✝⁷ : TopologicalSpace H₁
H₂ : Type u_7
inst✝⁶ : TopologicalSpace H₂
H₃ : Type u_8
inst✝⁵ : TopologicalSpace H₃
inst✝⁴ : ChartedSpace H₁ H₂
inst✝³ : ChartedSpace H₂ H₃
G₁ : StructureGroupoid H₁
inst✝² : HasGroupoid H₂ G₁
inst✝¹ : ClosedUnderRestriction G₁
G₂ : StructureGroupoid H₂
inst✝ : HasGroupoid H₃ G₂
H : ∀ e ∈ G₂, LiftPropOn G₁.IsLocalStructomorphWithinAt (↑e) e.source
x✝ : ChartedSpace H₁ H₃ := ChartedSpace.comp H₁ H₂ H₃
e : OpenPartialHomeomorph H₃ H₂
he : e ∈ atlas H₂ H₃
f : OpenPartialHomeomorph H₂ H₁
hf : f ∈ atlas H₁ H₂
e' : OpenPartialHomeomorph H₃ H₂
he' : e' ∈ atlas H₂ H₃
f' : OpenPartialHomeomorph H₂ H₁
hf' : f' ∈ atlas H₁ H₂
x : H₁
hx : (x ∈ f.target ∧ ↑f.symm x ∈ e.target) ∧ ↑e.symm (↑f.symm x) ∈ e'.source ∧ ↑e' (↑e.symm (↑f.symm x)) ∈ f'.source
hxs : x ∈ ↑f.symm ⁻¹' (e.symm ≫ₕ e').source
hxs' : x ∈ f.target ∩ ↑f.symm ⁻¹' ((e.symm ≫ₕ e').source ∩ ↑(e.symm ≫ₕ e') ⁻¹' f'.source)
φ : OpenPartialHomeomorph H₁ H₁
hφG₁ : φ ∈ G₁
hφ_dom : x ∈ φ.source
hφ : EqOn (↑(f.symm ≫ₕ e.symm ≫ₕ e' ≫ₕ f')) (↑φ.toPartialEquiv) (↑f.symm ⁻¹' (e.symm ≫ₕ e').source ∩ φ.source)
⊢ ∃ s, IsOpen[inst✝⁷] s ∧ x ∈ s ∧ ((e ≫ₕ f).symm ≫ₕ e' ≫ₕ f').restr s ∈ G₁
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
t : Set M
inst✝ : ChartedSpace H M
x x' : M
h : x' ∈ (extChartAt I x).source
ht : t ∈ 𝓝 x'
⊢ x' ∈ (chartAt H x).source

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
t : Set M
inst✝ : ChartedSpace H M
x : M
ht : t ∈ 𝓝 x
⊢ ↑(extChartAt I x).symm ⁻¹' t ∈ 𝓝 (↑(extChartAt I x) x)

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
s t : Set M
inst✝ : ChartedSpace H M
x : M
⊢ ↑(extChartAt I x).symm ⁻¹' (s ∩ t) ∩ range ↑I = ↑(extChartAt I x).symm ⁻¹' s ∩ range ↑I ∩ ↑(extChartAt I x).symm ⁻¹' t

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.LocalInvariantProperties

Goal state before:
pp: H₁ : Type u_6
inst✝⁷ : TopologicalSpace H₁
H₂ : Type u_7
inst✝⁶ : TopologicalSpace H₂
H₃ : Type u_8
inst✝⁵ : TopologicalSpace H₃
inst✝⁴ : ChartedSpace H₁ H₂
inst✝³ : ChartedSpace H₂ H₃
G₁ : StructureGroupoid H₁
inst✝² : HasGroupoid H₂ G₁
inst✝¹ : ClosedUnderRestriction G₁
G₂ : StructureGroupoid H₂
inst✝ : HasGroupoid H₃ G₂
H : ∀ e ∈ G₂, LiftPropOn G₁.IsLocalStructomorphWithinAt (↑e) e.source
x✝ : ChartedSpace H₁ H₃ := ChartedSpace.comp H₁ H₂ H₃
e : OpenPartialHomeomorph H₃ H₂
he : e ∈ atlas H₂ H₃
f : OpenPartialHomeomorph H₂ H₁
hf : f ∈ atlas H₁ H₂
e' : OpenPartialHomeomorph H₃ H₂
he' : e' ∈ atlas H₂ H₃
f' : OpenPartialHomeomorph H₂ H₁
hf' : f' ∈ atlas H₁ H₂
x : H₁
hx : (x ∈ f.target ∧ ↑f.symm x ∈ e.target) ∧ ↑e.symm (↑f.symm x) ∈ e'.source ∧ ↑e' (↑e.symm (↑f.symm x)) ∈ f'.source
hxs : x ∈ ↑f.symm ⁻¹' (e.symm ≫ₕ e').source
hxs' : x ∈ f.target ∩ ↑f.symm ⁻¹' ((e.symm ≫ₕ e').source ∩ ↑(e.symm ≫ₕ e') ⁻¹' f'.source)
φ : OpenPartialHomeomorph H₁ H₁
hφG₁ : φ ∈ G₁
hφ_dom : x ∈ φ.source
hφ : EqOn (↑(f.symm ≫ₕ e.symm ≫ₕ e' ≫ₕ f')) (↑φ.toPartialEquiv) (↑f.symm ⁻¹' (e.symm ≫ₕ e').source ∩ φ.source)
⊢ ∃ s, IsOpen[inst✝⁷] s ∧ x ∈ s ∧ ((f.symm ≫ₕ e.symm) ≫ₕ e' ≫ₕ f').restr s ∈ G₁

Tactic:
OpenPartialHomeomorph.trans_assoc

Goal state after:
H₁ : Type u_6
inst✝⁷ : TopologicalSpace H₁
H₂ : Type u_7
inst✝⁶ : TopologicalSpace H₂
H₃ : Type u_8
inst✝⁵ : TopologicalSpace H₃
inst✝⁴ : ChartedSpace H₁ H₂
inst✝³ : ChartedSpace H₂ H₃
G₁ : StructureGroupoid H₁
inst✝² : HasGroupoid H₂ G₁
inst✝¹ : ClosedUnderRestriction G₁
G₂ : StructureGroupoid H₂
inst✝ : HasGroupoid H₃ G₂
H : ∀ e ∈ G₂, LiftPropOn G₁.IsLocalStructomorphWithinAt (↑e) e.source
x✝ : ChartedSpace H₁ H₃ := ChartedSpace.comp H₁ H₂ H₃
e : OpenPartialHomeomorph H₃ H₂
he : e ∈ atlas H₂ H₃
f : OpenPartialHomeomorph H₂ H₁
hf : f ∈ atlas H₁ H₂
e' : OpenPartialHomeomorph H₃ H₂
he' : e' ∈ atlas H₂ H₃
f' : OpenPartialHomeomorph H₂ H₁
hf' : f' ∈ atlas H₁ H₂
x : H₁
hx : (x ∈ f.target ∧ ↑f.symm x ∈ e.target) ∧ ↑e.symm (↑f.symm x) ∈ e'.source ∧ ↑e' (↑e.symm (↑f.symm x)) ∈ f'.source
hxs : x ∈ ↑f.symm ⁻¹' (e.symm ≫ₕ e').source
hxs' : x ∈ f.target ∩ ↑f.symm ⁻¹' ((e.symm ≫ₕ e').source ∩ ↑(e.symm ≫ₕ e') ⁻¹' f'.source)
φ : OpenPartialHomeomorph H₁ H₁
hφG₁ : φ ∈ G₁
hφ_dom : x ∈ φ.source
hφ : EqOn (↑(f.symm ≫ₕ e.symm ≫ₕ e' ≫ₕ f')) (↑φ.toPartialEquiv) (↑f.symm ⁻¹' (e.symm ≫ₕ e').source ∩ φ.source)
⊢ ∃ s, IsOpen[inst✝⁷] s ∧ x ∈ s ∧ (f.symm ≫ₕ e.symm ≫ₕ e' ≫ₕ f').restr s ∈ G₁
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝¹⁰ : NontriviallyNormedField 𝕜
inst✝⁹ : NormedAddCommGroup E
inst✝⁸ : NormedSpace 𝕜 E
inst✝⁷ : TopologicalSpace H
inst✝⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝⁵ : NormedAddCommGroup E'
inst✝⁴ : NormedSpace 𝕜 E'
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
s : Set M
inst✝¹ : ChartedSpace H M
inst✝ : ChartedSpace H' M'
f : M → M'
x : M
hc : ContinuousWithinAt f s x
⊢ 𝓝[↑(extChartAt I x).symm ⁻¹' s ∩ range ↑I] ↑(extChartAt I x) x =
    𝓝[(extChartAt I x).target ∩ ↑(extChartAt I x).symm ⁻¹' (s ∩ f ⁻¹' (extChartAt I' (f x)).source)] ↑(extChartAt I x) x

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.Basic

Goal state before:
pp: 𝕜 : Type u_1
inst✝¹² : NontriviallyNormedField 𝕜
E : Type u_2
inst✝¹¹ : NormedAddCommGroup E
inst✝¹⁰ : NormedSpace 𝕜 E
H : Type u_3
inst✝⁹ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
M : Type u_4
inst✝⁸ : TopologicalSpace M
inst✝⁷ : ChartedSpace H M
E' : Type u_5
inst✝⁶ : NormedAddCommGroup E'
inst✝⁵ : NormedSpace 𝕜 E'
H' : Type u_6
inst✝⁴ : TopologicalSpace H'
I' : ModelWithCorners 𝕜 E' H'
n : ℕ∞ω
M' : Type u_7
inst✝³ : TopologicalSpace M'
inst✝² : ChartedSpace H' M'
inst✝¹ : IsManifold I n M
inst✝ : IsManifold I' n M'
e : OpenPartialHomeomorph M H
he : e ∈ maximalAtlas I n M
e' : OpenPartialHomeomorph M' H'
he' : e' ∈ maximalAtlas I' n M'
⊢ e.prod e' ∈ maximalAtlas (I.prod I') n (M × M')

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝¹⁰ : NontriviallyNormedField 𝕜
inst✝⁹ : NormedAddCommGroup E
inst✝⁸ : NormedSpace 𝕜 E
inst✝⁷ : TopologicalSpace H
inst✝⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝⁵ : NormedAddCommGroup E'
inst✝⁴ : NormedSpace 𝕜 E'
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
s : Set M
inst✝¹ : ChartedSpace H M
inst✝ : ChartedSpace H' M'
f : M → M'
x : M
hc : ContinuousWithinAt f s x
⊢ ↑(extChartAt I x).symm ⁻¹' s ∩ range ↑I =ᶠ[𝓝 (↑(extChartAt I x) x)]
    (extChartAt I x).target ∩ ↑(extChartAt I x).symm ⁻¹' (s ∩ f ⁻¹' (extChartAt I' (f x)).source)

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝ : ChartedSpace H M
x : M
y : E
h : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt I I x (↑(chartAt H x)) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝ : ChartedSpace H M
x : M
y : E
h : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt I I (↑(chartAt H x) x) (↑(chartAt H x).symm) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝ : ChartedSpace H M
x : M
y : E
h : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt I 𝓘(𝕜, E) x (↑(extChartAt I x)) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
inst✝⁵ : NontriviallyNormedField 𝕜
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
inst✝² : TopologicalSpace H
inst✝¹ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝ : ChartedSpace H M
x : M
y : E
h : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt 𝓘(𝕜, E) I (↑(extChartAt I x) x) (↑(extChartAt I x).symm) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝¹⁰ : NontriviallyNormedField 𝕜
inst✝⁹ : NormedAddCommGroup E
inst✝⁸ : NormedSpace 𝕜 E
inst✝⁷ : TopologicalSpace H
inst✝⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝⁵ : NormedAddCommGroup E'
inst✝⁴ : NormedSpace 𝕜 E'
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
inst✝¹ : ChartedSpace H M
inst✝ : ChartedSpace H' M'
x : M
f : M → M'
x' : E
hx' : x' ∈ (extChartAt I x).target ∩ f ∘ ↑(extChartAt I x).symm ⁻¹' (extChartAt I' (f x)).source
⊢ f (↑(chartAt H x).symm (↑I.symm x')) ∈ (chartAt H' (f x)).source

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝¹⁰ : NontriviallyNormedField 𝕜
inst✝⁹ : NormedAddCommGroup E
inst✝⁸ : NormedSpace 𝕜 E
inst✝⁷ : TopologicalSpace H
inst✝⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝⁵ : NormedAddCommGroup E'
inst✝⁴ : NormedSpace 𝕜 E'
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
inst✝¹ : ChartedSpace H M
inst✝ : ChartedSpace H' M'
x : M
f : M → M'
⊢ MapsTo (writtenInExtChartAt I I' x f)
    ((extChartAt I x).target ∩ f ∘ ↑(extChartAt I x).symm ⁻¹' (extChartAt I' (f x)).source) (extChartAt I' (f x)).target

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝²⁰ : NontriviallyNormedField 𝕜
inst✝¹⁹ : NormedAddCommGroup E
inst✝¹⁸ : NormedSpace 𝕜 E
inst✝¹⁷ : TopologicalSpace H
inst✝¹⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝¹⁵ : NormedAddCommGroup E'
inst✝¹⁴ : NormedSpace 𝕜 E'
inst✝¹³ : TopologicalSpace H'
inst✝¹² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
inst✝¹¹ : ChartedSpace H M
inst✝¹⁰ : ChartedSpace H' M'
G : Type u_8
G' : Type u_9
F : Type u_10
F' : Type u_11
N : Type u_12
N' : Type u_13
inst✝⁹ : NormedAddCommGroup F
inst✝⁸ : NormedSpace 𝕜 F
inst✝⁷ : NormedAddCommGroup F'
inst✝⁶ : NormedSpace 𝕜 F'
inst✝⁵ : TopologicalSpace G
inst✝⁴ : TopologicalSpace N
inst✝³ : TopologicalSpace G'
inst✝² : TopologicalSpace N'
J : ModelWithCorners 𝕜 F G
J' : ModelWithCorners 𝕜 F' G'
inst✝¹ : ChartedSpace G N
inst✝ : ChartedSpace G' N'
f : M → N
g : M' → N'
x : M
x' : M'
⊢ writtenInExtChartAt (I.prod I') (J.prod J') (x, x') (Prod.map f g) =
    Prod.map (writtenInExtChartAt I J x f) (writtenInExtChartAt I' J' x' g)

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
inst✝² : NontriviallyNormedField 𝕜
inst✝¹ : NormedAddCommGroup E
inst✝ : NormedSpace 𝕜 E
x : E
⊢ extChartAt 𝓘(𝕜, E) x = PartialEquiv.refl E

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
M : Type u_3
H : Type u_4
E' : Type u_5
M' : Type u_6
H' : Type u_7
inst✝¹⁰ : NontriviallyNormedField 𝕜
inst✝⁹ : NormedAddCommGroup E
inst✝⁸ : NormedSpace 𝕜 E
inst✝⁷ : TopologicalSpace H
inst✝⁶ : TopologicalSpace M
I : ModelWithCorners 𝕜 E H
inst✝⁵ : NormedAddCommGroup E'
inst✝⁴ : NormedSpace 𝕜 E'
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
I' : ModelWithCorners 𝕜 E' H'
inst✝¹ : ChartedSpace H M
inst✝ : ChartedSpace H' M'
x : M × M'
⊢ extChartAt (I.prod I') x = (extChartAt I x.1).prod (extChartAt I' x.2)

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
H : Type u_4
M' : Type u_6
H' : Type u_7
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
inst✝⁴ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
inst✝¹ : ChartedSpace H' M'
inst✝ : ChartedSpace H H'
x : M'
y : E
hy : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt I I x (↑(chartAt H' x)) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.Basic

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁷ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
H : Type u_3
inst✝⁴ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
n : ℕ∞ω
M : Type u_4
inst✝³ : TopologicalSpace M
inst✝² : ChartedSpace H M
M' : Type u_5
inst✝¹ : TopologicalSpace M'
inst✝ : ChartedSpace H M'
hM : IsManifold I n M
hM' : IsManifold I n M'
e e' : OpenPartialHomeomorph (M ⊕ M') H
he : e ∈ atlas H (M ⊕ M')
he' : e' ∈ atlas H (M ⊕ M')
h : Nonempty H
f : OpenPartialHomeomorph M H
hf : f ∈ atlas H M
hef : e = f.lift_openEmbedding ⋯
f' : OpenPartialHomeomorph M' H
hf' : f' ∈ atlas H M'
he'f' : e' = f'.lift_openEmbedding ⋯
x : H
x✝ : x ∈ ((f.lift_openEmbedding ⋯).symm ≫ₕ f'.lift_openEmbedding ⋯).source
hx₁ : x ∈ (f.lift_openEmbedding ⋯).symm.symm.target
hx₂ : x ∈ ↑(f.lift_openEmbedding ⋯).symm.symm.symm ⁻¹' (f'.lift_openEmbedding ⋯).source
⊢ x ∈ ∅

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
H : Type u_4
M' : Type u_6
H' : Type u_7
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
inst✝⁴ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
inst✝³ : TopologicalSpace H'
inst✝² : TopologicalSpace M'
inst✝¹ : ChartedSpace H' M'
inst✝ : ChartedSpace H H'
x : M'
y : E
hy : y ∈ (extChartAt I x).target
⊢ writtenInExtChartAt I I (↑(chartAt H' x) x) (↑(chartAt H' x).symm) y = y

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: E : Type u_8
𝕜 : Type u_9
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
H : Type u_10
inst✝⁴ : TopologicalSpace H
M : Type u_11
inst✝³ : TopologicalSpace M
inst✝² : ChartedSpace H M
I : ModelWithCorners 𝕜 E H
inst✝¹ : LocallyCompactSpace 𝕜
inst✝ : FiniteDimensional 𝕜 E
⊢ LocallyCompactSpace M

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: E : Type u_8
𝕜 : Type u_9
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
H : Type u_10
inst✝³ : TopologicalSpace H
M : Type u_11
inst✝² : TopologicalSpace M
inst✝¹ : ChartedSpace H M
I : ModelWithCorners 𝕜 E H
h : Nonempty M
inst✝ : LocallyCompactSpace M
⊢ LocallyCompactSpace E

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.ExtChartAt

Goal state before:
pp: E : Type u_8
𝕜 : Type u_9
inst✝⁸ : NontriviallyNormedField 𝕜
inst✝⁷ : NormedAddCommGroup E
inst✝⁶ : NormedSpace 𝕜 E
H : Type u_10
inst✝⁵ : TopologicalSpace H
M : Type u_11
inst✝⁴ : TopologicalSpace M
inst✝³ : ChartedSpace H M
inst✝² : CompleteSpace 𝕜
I : ModelWithCorners 𝕜 E H
inst✝¹ : Nonempty M
inst✝ : LocallyCompactSpace M
⊢ FiniteDimensional 𝕜 E

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.Basic

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁷ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
H : Type u_3
inst✝⁴ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
n : ℕ∞ω
M : Type u_4
inst✝³ : TopologicalSpace M
inst✝² : ChartedSpace H M
M' : Type u_5
inst✝¹ : TopologicalSpace M'
inst✝ : ChartedSpace H M'
hM : IsManifold I n M
hM' : IsManifold I n M'
e e' : OpenPartialHomeomorph (M ⊕ M') H
he : e ∈ atlas H (M ⊕ M')
he' : e' ∈ atlas H (M ⊕ M')
h : Nonempty H
f : OpenPartialHomeomorph M' H
hf : f ∈ atlas H M'
hef : e = f.lift_openEmbedding ⋯
f' : OpenPartialHomeomorph M H
hf' : f' ∈ atlas H M
he'f' : e' = f'.lift_openEmbedding ⋯
x : H
x✝ : x ∈ ((f.lift_openEmbedding ⋯).symm ≫ₕ f'.lift_openEmbedding ⋯).source
hx₁ : x ∈ (f.lift_openEmbedding ⋯).symm.symm.target
hx₂ : x ∈ ↑(f.lift_openEmbedding ⋯).symm.symm.symm ⁻¹' (f'.lift_openEmbedding ⋯).source
⊢ x ∈ ∅

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.LocalInvariantProperties

Goal state before:
pp: H₁ : Type u_6
inst✝⁷ : TopologicalSpace H₁
H₂ : Type u_7
inst✝⁶ : TopologicalSpace H₂
H₃ : Type u_8
inst✝⁵ : TopologicalSpace H₃
inst✝⁴ : ChartedSpace H₁ H₂
inst✝³ : ChartedSpace H₂ H₃
G₁ : StructureGroupoid H₁
inst✝² : HasGroupoid H₂ G₁
inst✝¹ : ClosedUnderRestriction G₁
G₂ : StructureGroupoid H₂
inst✝ : HasGroupoid H₃ G₂
H : ∀ e ∈ G₂, LiftPropOn G₁.IsLocalStructomorphWithinAt (↑e) e.source
x✝ : ChartedSpace H₁ H₃ := ChartedSpace.comp H₁ H₂ H₃
⊢ ∀ {e e' : OpenPartialHomeomorph H₃ H₁}, e ∈ atlas H₁ H₃ → e' ∈ atlas H₁ H₃ → e.symm ≫ₕ e' ∈ G₁

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.ContMDiff.Defs

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁵ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁴ : NormedAddCommGroup E
inst✝³ : NormedSpace 𝕜 E
E' : Type u_5
inst✝² : NormedAddCommGroup E'
inst✝¹ : NormedSpace 𝕜 E'
H' : Type u_6
inst✝ : TopologicalSpace H'
I' : ModelWithCorners 𝕜 E' H'
n : ℕ∞ω
f : E → H'
s : Set E
x : E
⊢ ContDiffWithinAtProp 𝓘(𝕜, E) I' n f s x ↔ ContDiffWithinAt 𝕜 n (↑I' ∘ f) s x

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.ContMDiff.Defs

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁶ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
H : Type u_3
inst✝³ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
E' : Type u_5
inst✝² : NormedAddCommGroup E'
inst✝¹ : NormedSpace 𝕜 E'
H' : Type u_6
inst✝ : TopologicalSpace H'
I' : ModelWithCorners 𝕜 E' H'
n m : ℕ∞ω
hmn : m ≤ n
s : Set H
x : H
u : Set H
f : H → H'
u_open : IsOpen[inst✝³] u
xu : x ∈ u
⊢ ↑I.symm ⁻¹' (s ∩ u) ∩ range ↑I = ↑I.symm ⁻¹' s ∩ range ↑I ∩ ↑I.symm ⁻¹' u

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.ContMDiff.Basic

Goal state before:
pp: 𝕜 : Type u_1
inst✝¹⁵ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝¹⁴ : NormedAddCommGroup E
inst✝¹³ : NormedSpace 𝕜 E
H : Type u_3
inst✝¹² : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
M : Type u_4
inst✝¹¹ : TopologicalSpace M
E' : Type u_5
inst✝¹⁰ : NormedAddCommGroup E'
inst✝⁹ : NormedSpace 𝕜 E'
H' : Type u_6
inst✝⁸ : TopologicalSpace H'
I' : ModelWithCorners 𝕜 E' H'
M' : Type u_7
inst✝⁷ : TopologicalSpace M'
E'' : Type u_8
inst✝⁶ : NormedAddCommGroup E''
inst✝⁵ : NormedSpace 𝕜 E''
H'' : Type u_9
inst✝⁴ : TopologicalSpace H''
I'' : ModelWithCorners 𝕜 E'' H''
M'' : Type u_10
inst✝³ : TopologicalSpace M''
inst✝² : ChartedSpace H M
inst✝¹ : ChartedSpace H' M'
inst✝ : ChartedSpace H'' M''
f : M → M'
s : Set M
n : ℕ∞ω
t : Set M'
g : M' → M''
x : M
st : MapsTo f s t
e : PartialEquiv M E := extChartAt I x
e' : PartialEquiv M' E' := extChartAt I' (f x)
hg :
  ContinuousWithinAt g t (f x) ∧
    ContDiffWithinAt 𝕜 n (↑(extChartAt I'' (g (f x))) ∘ g ∘ ↑e'.symm) (↑e'.symm ⁻¹' t ∩ range ↑I') (↑e' (f x))
hf : ContinuousWithinAt f s x ∧ ContDiffWithinAt 𝕜 n (↑e' ∘ f ∘ ↑e.symm) (↑e.symm ⁻¹' s ∩ range ↑I) (↑e x)
⊢ ↑e' (f x) = writtenInExtChartAt I I' x f (↑e x)

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.ContMDiff.Defs

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁶ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
H : Type u_3
inst✝³ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
E' : Type u_5
inst✝² : NormedAddCommGroup E'
inst✝¹ : NormedSpace 𝕜 E'
H' : Type u_6
inst✝ : TopologicalSpace H'
I' : ModelWithCorners 𝕜 E' H'
n m : ℕ∞ω
hmn : m ≤ n
s : Set H
x : H
u : Set H
f : H → H'
u_open : IsOpen[inst✝³] u
xu : x ∈ u
this : ↑I.symm ⁻¹' (s ∩ u) ∩ range ↑I = ↑I.symm ⁻¹' s ∩ range ↑I ∩ ↑I.symm ⁻¹' u
⊢ u ∈ 𝓝 (↑I.symm (↑I x))

Tactic:
by

Goal state after:
Module: Mathlib.Geometry.Manifold.IsManifold.Basic

Goal state before:
pp: case inr.inr
𝕜 : Type u_1
inst✝⁷ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁶ : NormedAddCommGroup E
inst✝⁵ : NormedSpace 𝕜 E
H : Type u_3
inst✝⁴ : TopologicalSpace H
I : ModelWithCorners 𝕜 E H
n : ℕ∞ω
M : Type u_4
inst✝³ : TopologicalSpace M
inst✝² : ChartedSpace H M
M' : Type u_5
inst✝¹ : TopologicalSpace M'
inst✝ : ChartedSpace H M'
hM : IsManifold I n M
hM' : IsManifold I n M'
e e' : OpenPartialHomeomorph (M ⊕ M') H
he : e ∈ atlas H (M ⊕ M')
he' : e' ∈ atlas H (M ⊕ M')
h : Nonempty H
f : OpenPartialHomeomorph M' H
hf : f ∈ atlas H M'
hef : e = f.lift_openEmbedding ⋯
⊢ e.symm ≫ₕ e' ∈ contDiffGroupoid n I

Tactic:
· -- Analogous argument to the first case: is there a way to deduplicate?
      obtain (⟨f', hf', he'f'⟩ | ⟨f', hf', he'f'⟩) := ChartedSpace.mem_atlas_sum he'
      · rw [hef, he'f']
        apply ContDiffGroupoid.mem_of_source_eq_empty
        ext x
        exact ⟨fun ⟨hx₁, hx₂⟩ ↦ by simp_all, fun hx ↦ hx.elim⟩
      · rw [hef, he'f', f.lift_openEmbedding_trans f' IsOpenEmbedding.inr]
        exact hM'.compatible hf hf'

Goal state after: