mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Analysis.Analytic.OfScalars

Goal state before:
pp: case refine_1
𝕜 : Type u_1
E : Type u_2
inst✝³ : NontriviallyNormedField 𝕜
inst✝² : NormedRing E
inst✝¹ : NormedAlgebra 𝕜 E
c : ℕ → 𝕜
inst✝ : NormOneClass E
r : ℝ≥0
hr : ↑r < (ofScalars E c).radius
this : 0 < r
hc : ∀ᶠ (x : ℕ) in atTop, ‖‖ofScalars E c x‖ * ↑r ^ x‖ = 0
⊢ ¬Tendsto (fun n ↦ ‖c n.succ‖ / ‖c n‖) atTop atTop

Tactic:
apply not_tendsto_atTop_of_tendsto_nhds (a := 0)

Goal state after:
case refine_1
𝕜 : Type u_1
E : Type u_2
inst✝³ : NontriviallyNormedField 𝕜
inst✝² : NormedRing E
inst✝¹ : NormedAlgebra 𝕜 E
c : ℕ → 𝕜
inst✝ : NormOneClass E
r : ℝ≥0
hr : ↑r < (ofScalars E c).radius
this : 0 < r
hc : ∀ᶠ (x : ℕ) in atTop, ‖‖ofScalars E c x‖ * ↑r ^ x‖ = 0
⊢ Tendsto (fun n ↦ ‖c n.succ‖ / ‖c n‖) atTop (𝓝 0)
Module: Mathlib.Analysis.Analytic.Composition

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
n : ℕ
q : FormalMultilinearSeries 𝕜 F G
p : FormalMultilinearSeries 𝕜 E F
c : Composition n
⊢ ↑‖q.compAlongComposition p c‖₊ ≤ ↑(‖q c.length‖₊ * ∏ i, ‖p (c.blocksFun i)‖₊)

Tactic:
push_cast

Goal state after:
𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
inst✝⁶ : NontriviallyNormedField 𝕜
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
n : ℕ
q : FormalMultilinearSeries 𝕜 F G
p : FormalMultilinearSeries 𝕜 E F
c : Composition n
⊢ ‖q.compAlongComposition p c‖ ≤ ‖q c.length‖ * ∏ a, ‖p (c.blocksFun a)‖
Module: Mathlib.Analysis.Analytic.Composition

Goal state before:
pp: case inr
𝕜 : Type u_1
E : Type u_2
F : Type u_3
inst✝⁴ : NontriviallyNormedField 𝕜
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
p : FormalMultilinearSeries 𝕜 E F
v0 : Fin 0 → E
n : ℕ
n_pos : n > 0
⊢ (id 𝕜 F ((p 0) v0)).compAlongComposition p (Composition.single n n_pos) = p n

Tactic:
show compAlongComposition (id 𝕜 F (p 0 v0)) p (Composition.single n n_pos) = p n

Goal state after:
case inr
𝕜 : Type u_1
E : Type u_2
F : Type u_3
inst✝⁴ : NontriviallyNormedField 𝕜
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
p : FormalMultilinearSeries 𝕜 E F
v0 : Fin 0 → E
n : ℕ
n_pos : n > 0
⊢ (id 𝕜 F ((p 0) v0)).compAlongComposition p (Composition.single n n_pos) = p n
Module: Mathlib.Analysis.Analytic.CPolynomial

Goal state before:
pp: 𝕜 : Type u_1
F : Type u_3
G : Type u_4
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup F
inst✝⁵ : NormedSpace 𝕜 F
inst✝⁴ : NormedAddCommGroup G
inst✝³ : NormedSpace 𝕜 G
ι : Type u_5
Em : ι → Type u_6
inst✝² : (i : ι) → NormedAddCommGroup (Em i)
inst✝¹ : (i : ι) → NormedSpace 𝕜 (Em i)
inst✝ : Fintype ι
f : G →L[𝕜] ContinuousMultilinearMap 𝕜 Em F
⊢ ∀ y ∈ Metric.eball 0 ∞,
    (∑ i ∈ Finset.range (Fintype.card (Option ι) + 1), (f.toFormalMultilinearSeriesOfMultilinear i) fun x ↦ y) =
      (f (0 + y).1) (0 + y).2

Tactic:
intro y _

Goal state after:
𝕜 : Type u_1
F : Type u_3
G : Type u_4
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup F
inst✝⁵ : NormedSpace 𝕜 F
inst✝⁴ : NormedAddCommGroup G
inst✝³ : NormedSpace 𝕜 G
ι : Type u_5
Em : ι → Type u_6
inst✝² : (i : ι) → NormedAddCommGroup (Em i)
inst✝¹ : (i : ι) → NormedSpace 𝕜 (Em i)
inst✝ : Fintype ι
f : G →L[𝕜] ContinuousMultilinearMap 𝕜 Em F
y : G × ((i : ι) → Em i)
a✝ : y ∈ Metric.eball 0 ∞
⊢ (∑ i ∈ Finset.range (Fintype.card (Option ι) + 1), (f.toFormalMultilinearSeriesOfMultilinear i) fun x ↦ y) =
    (f (0 + y).1) (0 + y).2
Module: Mathlib.Analysis.Analytic.CPolynomial

Goal state before:
pp: 𝕜 : Type u_1
F : Type u_3
G : Type u_4
inst✝⁷ : NontriviallyNormedField 𝕜
inst✝⁶ : NormedAddCommGroup F
inst✝⁵ : NormedSpace 𝕜 F
inst✝⁴ : NormedAddCommGroup G
inst✝³ : NormedSpace 𝕜 G
ι : Type u_5
Em : ι → Type u_6
inst✝² : (i : ι) → NormedAddCommGroup (Em i)
inst✝¹ : (i : ι) → NormedSpace 𝕜 (Em i)
inst✝ : Fintype ι
f : G →L[𝕜] ContinuousMultilinearMap 𝕜 Em F
y : G × ((i : ι) → Em i)
a✝ : y ∈ Metric.eball 0 ∞
⊢ ∀ b ∈ Finset.range (Fintype.card (Option ι) + 1),
    b ≠ Fintype.card (Option ι) → ((f.toFormalMultilinearSeriesOfMultilinear b) fun x ↦ y) = 0

Tactic:
intro m _ ne; rw [toFormalMultilinearSeriesOfMultilinear, dif_neg ne.symm]; rfl

Goal state after:
Module: Mathlib.Analysis.Analytic.Inverse

Goal state before:
pp: n : ℕ
p : ℕ → ℝ
hp : ∀ (k : ℕ), 0 ≤ p k
r a : ℝ
hr : 0 ≤ r
ha : 0 ≤ a
⊢ ∑ e ∈ compPartialSumSource 2 (n + 1) n, ∏ j, r * (a ^ e.snd j * p (e.snd j)) =
    ∑ d ∈ compPartialSumTarget 2 (n + 1) n, ∏ j, r * (a ^ d.snd.blocksFun j * p (d.snd.blocksFun j))

Tactic:
apply compChangeOfVariables_sum

Goal state after:
n : ℕ
p : ℕ → ℝ
hp : ∀ (k : ℕ), 0 ≤ p k
r a : ℝ
hr : 0 ≤ r
ha : 0 ≤ a
⊢ ∀ (e : (n : ℕ) × (Fin n → ℕ)) (he : e ∈ compPartialSumSource 2 (n + 1) n),
    ∏ j, r * (a ^ e.snd j * p (e.snd j)) =
      ∏ j,
        r *
          (a ^ (compChangeOfVariables 2 (n + 1) n e he).snd.blocksFun j *
            p ((compChangeOfVariables 2 (n + 1) n e he).snd.blocksFun j))
Module: Mathlib.Analysis.Analytic.Within

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
F : Type u_3
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
x : E
h : {x} ∈ 𝓝[s] x
t : Set E
ot : IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] t
xt : x ∈ t
r : ℝ
r0 : r > 0
rt : ball x r ⊆ t
y : E
ys : x + y ∈ insert x s
yr : y ∈ eball 0 (ENNReal.ofReal r)
st : ∀ y ∈ t, y ∈ s → y = x
⊢ HasSum (fun n ↦ (constFormalMultilinearSeries 𝕜 E (f x) n) fun x ↦ y) (f (x + y))

Tactic:
simp only [mem_insert_iff, add_eq_left] at ys

Goal state after:
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
F : Type u_3
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
x : E
h : {x} ∈ 𝓝[s] x
t : Set E
ot : IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] t
xt : x ∈ t
r : ℝ
r0 : r > 0
rt : ball x r ⊆ t
y : E
yr : y ∈ eball 0 (ENNReal.ofReal r)
st : ∀ y ∈ t, y ∈ s → y = x
ys : y = 0 ∨ x + y ∈ s
⊢ HasSum (fun n ↦ (constFormalMultilinearSeries 𝕜 E (f x) n) fun x ↦ y) (f (x + y))
Module: Mathlib.Analysis.Analytic.Inverse

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
p : FormalMultilinearSeries 𝕜 E F
i : E ≃L[𝕜] F
x : E
hp : 0 < p.radius
C r : ℝ
Cpos : 0 < C
rpos : 0 < r
ple : ∀ (n : ℕ), ‖p n‖ ≤ C * r ^ n
I : ℝ := ‖↑i.symm‖
a : ℝ
apos : 0 < a
ha1 : 2 * I * C * r ^ 2 * (I + 1) ^ 2 * a ≤ 1
ha2 : r * (I + 1) * a ≤ 1 / 2
S : ℕ → ℝ := fun n ↦ ∑ k ∈ Ico 1 n, a ^ k * ‖p.rightInv i x k‖
n : ℕ
one_le_n : 1 ≤ n
hn : S n ≤ (I + 1) * a
In : 2 ≤ n + 1
rSn : r * S n ≤ 1 / 2
⊢ I * a + I * C * ∑ k ∈ Ico 2 (n + 1), (r * S n) ^ k =
    I * a + I * C * (((r * S n) ^ 2 - (r * S n) ^ (n + 1)) / (1 - r * S n))

Tactic:
rw [geom_sum_Ico' _ In]; exact ne_of_lt (rSn.trans_lt (by norm_num))

Goal state after:
Module: Mathlib.Analysis.Analytic.Within

Goal state before:
pp: case a
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
F : Type u_3
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
h : ∀ x ∈ s, ∃ u, IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] u ∧ x ∈ u ∧ AnalyticOn 𝕜 f (s ∩ u)
x : E
m : x ∈ s
u : Set E
ou : IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] u
xu : x ∈ u
fu : AnalyticOn 𝕜 f (s ∩ u)
r : ℝ
r0 : r > 0
ru : ball x r ⊆ u
p : FormalMultilinearSeries 𝕜 E F
t : ℝ≥0∞
fp : HasFPowerSeriesWithinOnBall f p (s ∩ u) x t
y : E
ys : x + y ∈ insert x s
yr : ‖y‖ < r ∧ edist y 0 < t
⊢ x + y ∈ insert x (s ∩ u)

Tactic:
simp only [mem_insert_iff, add_eq_left] at ys

Goal state after:
case a
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
F : Type u_3
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
h : ∀ x ∈ s, ∃ u, IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] u ∧ x ∈ u ∧ AnalyticOn 𝕜 f (s ∩ u)
x : E
m : x ∈ s
u : Set E
ou : IsOpen[PseudoMetricSpace.toUniformSpace.toTopologicalSpace] u
xu : x ∈ u
fu : AnalyticOn 𝕜 f (s ∩ u)
r : ℝ
r0 : r > 0
ru : ball x r ⊆ u
p : FormalMultilinearSeries 𝕜 E F
t : ℝ≥0∞
fp : HasFPowerSeriesWithinOnBall f p (s ∩ u) x t
y : E
yr : ‖y‖ < r ∧ edist y 0 < t
ys : y = 0 ∨ x + y ∈ s
⊢ x + y ∈ insert x (s ∩ u)
Module: Mathlib.Analysis.Analytic.Composition

Goal state before:
pp: n : ℕ
i j : (a : Composition n) × Composition a.length
⊢ i = j → i.fst.blocks = j.fst.blocks ∧ i.snd.blocks = j.snd.blocks

Tactic:
rintro rfl

Goal state after:
n : ℕ
i : (a : Composition n) × Composition a.length
⊢ i.fst.blocks = i.fst.blocks ∧ i.snd.blocks = i.snd.blocks
Module: Mathlib.Analysis.Analytic.Composition

Goal state before:
pp: 𝕜 : Type u_1
E : Type u_2
F : Type u_3
G : Type u_4
H : Type u_5
inst✝⁸ : NontriviallyNormedField 𝕜
inst✝⁷ : NormedAddCommGroup E
inst✝⁶ : NormedSpace 𝕜 E
inst✝⁵ : NormedAddCommGroup F
inst✝⁴ : NormedSpace 𝕜 F
inst✝³ : NormedAddCommGroup G
inst✝² : NormedSpace 𝕜 G
inst✝¹ : NormedAddCommGroup H
inst✝ : NormedSpace 𝕜 H
n : ℕ
a : Composition n
b : Composition a.length
i : Fin (a.gather b).length
⊢ ↑i < (a.blocks.splitWrtComposition b).length

Tactic:
by
      rw [length_splitWrtComposition, ← length_gather]; exact i.2

Goal state after:
Module: Mathlib.Analysis.Calculus.FDeriv.Comp

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
F : Type u_3
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
G : Type u_4
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
g : F → G
f : E → F
x : E
s : Set E
t : Set F
hf : DifferentiableWithinAt 𝕜 f s x
h : MapsTo f s t
hxs : UniqueDiffWithinAt 𝕜 s x
v : E
hg : DifferentiableWithinAt 𝕜 g t (f x)
⊢ (fderivWithin 𝕜 g t (f x)) ((fderivWithin 𝕜 f s x) v) = (fderivWithin 𝕜 g t (f x) ∘SL fderivWithin 𝕜 f s x) v

Tactic:
comp_apply

Goal state after:
𝕜 : Type u_1
inst✝⁶ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace 𝕜 E
F : Type u_3
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace 𝕜 F
G : Type u_4
inst✝¹ : NormedAddCommGroup G
inst✝ : NormedSpace 𝕜 G
g : F → G
f : E → F
x : E
s : Set E
t : Set F
hf : DifferentiableWithinAt 𝕜 f s x
h : MapsTo f s t
hxs : UniqueDiffWithinAt 𝕜 s x
v : E
hg : DifferentiableWithinAt 𝕜 g t (f x)
⊢ (fderivWithin 𝕜 g t (f x)) ((fderivWithin 𝕜 f s x) v) = (fderivWithin 𝕜 g t (f x)) ((fderivWithin 𝕜 f s x) v)
Module: Mathlib.Analysis.Analytic.Constructions

Goal state before:
pp: 𝕜 : Type u_2
inst✝² : NontriviallyNormedField 𝕜
𝕝 : Type u_8
inst✝¹ : NormedDivisionRing 𝕝
inst✝ : NormedAlgebra 𝕜 𝕝
⊢ AnalyticOnNhd 𝕜 (fun z ↦ z⁻¹) {z | z ≠ 0}

Tactic:
intro z m

Goal state after:
𝕜 : Type u_2
inst✝² : NontriviallyNormedField 𝕜
𝕝 : Type u_8
inst✝¹ : NormedDivisionRing 𝕝
inst✝ : NormedAlgebra 𝕜 𝕝
z : 𝕝
m : z ∈ {z | z ≠ 0}
⊢ AnalyticAt 𝕜 (fun z ↦ z⁻¹) z
Module: Mathlib.Analysis.Analytic.Inverse

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : OpenPartialHomeomorph E F
a : E
i : E ≃L[𝕜] F
h0 : a ∈ f.source
p : FormalMultilinearSeries 𝕜 E F
h : HasFPowerSeriesAt (↑f) p a
hp : p 1 = (continuousMultilinearCurryFin1 𝕜 E F).symm ↑i
A : HasFPowerSeriesAt (↑f.symm ∘ ↑f) ((p.leftInv i a).comp p) a
B : ∀ᶠ (y : E) in 𝓝 0, HasSum (fun n ↦ (p.leftInv i a n) fun x ↦ ↑f (a + y) - ↑f a) (↑f.symm (↑f (a + y)))
⊢ ∀ᶠ (y : E) in 𝓝 a, HasSum (fun n ↦ (p.leftInv i a n) fun x ↦ ↑f y - ↑f a) (↑f.symm (↑f y))

Tactic:
← sub_eq_zero_of_eq (a := a) rfl

Goal state after:
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : OpenPartialHomeomorph E F
a : E
i : E ≃L[𝕜] F
h0 : a ∈ f.source
p : FormalMultilinearSeries 𝕜 E F
h : HasFPowerSeriesAt (↑f) p a
hp : p 1 = (continuousMultilinearCurryFin1 𝕜 E F).symm ↑i
A : HasFPowerSeriesAt (↑f.symm ∘ ↑f) ((p.leftInv i a).comp p) a
B : ∀ᶠ (y : E) in 𝓝 (a - a), HasSum (fun n ↦ (p.leftInv i a n) fun x ↦ ↑f (a + y) - ↑f a) (↑f.symm (↑f (a + y)))
⊢ ∀ᶠ (y : E) in 𝓝 a, HasSum (fun n ↦ (p.leftInv i a n) fun x ↦ ↑f y - ↑f a) (↑f.symm (↑f y))
Module: Mathlib.Analysis.Analytic.Constructions

Goal state before:
pp: case mpr
𝕜 : Type u_2
inst✝⁹ : NontriviallyNormedField 𝕜
E : Type u_3
F : Type u_4
inst✝⁸ : NormedAddCommGroup E
inst✝⁷ : NormedSpace 𝕜 E
inst✝⁶ : NormedAddCommGroup F
inst✝⁵ : NormedSpace 𝕜 F
𝕝 : Type u_8
inst✝⁴ : NormedDivisionRing 𝕝
inst✝³ : NormedAlgebra 𝕜 𝕝
inst✝² : Module 𝕝 F
inst✝¹ : IsBoundedSMul 𝕝 F
inst✝ : IsScalarTower 𝕜 𝕝 F
f : E → 𝕝
g : E → F
z : E
h₁f : AnalyticAt 𝕜 f z
h₂f : f z ≠ 0
⊢ AnalyticAt 𝕜 (fun z ↦ f z • g z) z → AnalyticAt 𝕜 g z

Tactic:
intro hprod

Goal state after:
case mpr
𝕜 : Type u_2
inst✝⁹ : NontriviallyNormedField 𝕜
E : Type u_3
F : Type u_4
inst✝⁸ : NormedAddCommGroup E
inst✝⁷ : NormedSpace 𝕜 E
inst✝⁶ : NormedAddCommGroup F
inst✝⁵ : NormedSpace 𝕜 F
𝕝 : Type u_8
inst✝⁴ : NormedDivisionRing 𝕝
inst✝³ : NormedAlgebra 𝕜 𝕝
inst✝² : Module 𝕝 F
inst✝¹ : IsBoundedSMul 𝕝 F
inst✝ : IsScalarTower 𝕜 𝕝 F
f : E → 𝕝
g : E → F
z : E
h₁f : AnalyticAt 𝕜 f z
h₂f : f z ≠ 0
hprod : AnalyticAt 𝕜 (fun z ↦ f z • g z) z
⊢ AnalyticAt 𝕜 g z
Module: Mathlib.Analysis.Analytic.Constructions

Goal state before:
pp: case neg
𝕜 : Type u_2
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_3
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
α : Type u_9
A : Type u_10
inst✝¹ : NormedCommRing A
inst✝ : NormedAlgebra 𝕜 A
f : α → E → A
c : E
h : ∀ (a : α), AnalyticAt 𝕜 (f a) c
hf : ¬(Function.mulSupport f).Finite
⊢ AnalyticAt 𝕜 1 c

Tactic:
apply analyticAt_const

Goal state after:
Module: Mathlib.Analysis.Calculus.FDeriv.Equiv

Goal state before:
pp: case inl
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
f' : E →L[𝕜] F
x : E
s : Set E
h : HasFDerivWithinAt f f' s x
hf' : ∃ C, AntilipschitzWith C ⇑f'
⊢ ∀ᶠ (x_1 : F) in 𝓝[≠] f x, x_1 ≠ f x

Tactic:
exact eventually_mem_nhdsWithin

Goal state after:
Module: Mathlib.Analysis.Calculus.FDeriv.Equiv

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
f' : E →L[𝕜] F
x : E
h : HasFDerivWithinAt f f' s x
hs : UniqueDiffWithinAt 𝕜 s x
h' : DenseRange ⇑f'
⊢ MapsTo ⇑f' ↑(Submodule.span 𝕜 (tangentConeAt 𝕜 s x)) ↑(Submodule.span 𝕜 (tangentConeAt 𝕜 (f '' s) (f x)))

Tactic:
change
    Submodule.span 𝕜 (tangentConeAt 𝕜 s x) ≤
      (Submodule.span 𝕜 (tangentConeAt 𝕜 (f '' s) (f x))).comap f'.toLinearMap

Goal state after:
𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u_2
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type u_3
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
s : Set E
f' : E →L[𝕜] F
x : E
h : HasFDerivWithinAt f f' s x
hs : UniqueDiffWithinAt 𝕜 s x
h' : DenseRange ⇑f'
⊢ Submodule.span 𝕜 (tangentConeAt 𝕜 s x) ≤ Submodule.comap (↑f') (Submodule.span 𝕜 (tangentConeAt 𝕜 (f '' s) (f x)))
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: 𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
N : ℕ∞ω
p : E → FormalMultilinearSeries 𝕜 E F
hN : ∞ ≤ N
k : ℕ
⊢ HasFTaylorSeriesUpToOn N f p s ↔ ∀ (n : ℕ), HasFTaylorSeriesUpToOn (↑(n + k)) f p s

Tactic:
constructor
  · intro H n
    apply H.of_le (natCast_le_of_coe_top_le_withTop hN _)
  · intro H
    constructor
    · exact (H 0).zero_eq
    · intro m _
      apply (H m.succ).fderivWithin m (by norm_cast; lia)
    · intro m _
      apply (H m).cont m (by simp)

Goal state after:
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: case mpr
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
p : E → FormalMultilinearSeries 𝕜 E F
n : ℕ
⊢ (∀ x ∈ s, (p x 0).curry0 = f x) ∧
      (∀ x ∈ s, HasFDerivWithinAt (fun y ↦ p y 0) (p x 1).curryLeft s x) ∧
        HasFTaylorSeriesUpToOn (↑n) (fun x ↦ (continuousMultilinearCurryFin1 𝕜 E F) (p x 1)) (fun x ↦ (p x).shift) s →
    HasFTaylorSeriesUpToOn (↑(n + 1)) f p s

Tactic:
· rintro ⟨Hzero_eq, Hfderiv_zero, Htaylor⟩
    constructor
    · exact Hzero_eq
    · intro m (hm : (m : ℕ∞ω) < n.succ) x (hx : x ∈ s)
      rcases m with - | m
      · exact Hfderiv_zero x hx
      · have A : (m : ℕ∞ω) < n := by
          rw [Nat.cast_lt] at hm ⊢
          exact Nat.lt_of_succ_lt_succ hm
        have :
          HasFDerivWithinAt (𝕜 := 𝕜) (continuousMultilinearCurryRightEquiv' 𝕜 m E F ∘ (p · m.succ))
            ((p x).shift m.succ).curryLeft s x := Htaylor.fderivWithin _ A x hx
        rw [LinearIsometryEquiv.comp_hasFDerivWithinAt_iff'
            (f' := ((p x).shift m.succ).curryLeft)] at this
        convert! this
        ext y v
        change
          (p x (Nat.succ (Nat.succ m))) (cons y v) =
            (p x m.succ.succ) (snoc (cons y (init v)) (v (last _)))
        rw [← cons_snoc_eq_snoc_cons, snoc_init_self]
    · intro m (hm : (m : ℕ∞ω) ≤ n.succ)
      rcases m with - | m
      · have : DifferentiableOn 𝕜 (fun x => p x 0) s := fun x hx =>
          (Hfderiv_zero x hx).differentiableWithinAt
        exact this.continuousOn
      · refine (continuousMultilinearCurryRightEquiv' 𝕜 m E F).comp_continuousOn_iff.mp ?_
        refine Htaylor.cont _ ?_
        rw [Nat.cast_le] at hm ⊢
        exact Nat.lt_succ_iff.mp hm

Goal state after:
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: 𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
hs : UniqueDiffOn 𝕜 s
n : ℕ
IH :
  ∀ {x : E},
    x ∈ s →
      ∀ (m : Fin (n + 1) → E),
        (iteratedFDerivWithin 𝕜 (n + 1) f s x) m =
          ((iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s x) (init m)) (m (last n))
x : E
hx : x ∈ s
m : Fin (n + 1 + 1) → E
I : (E [×n]→L[𝕜] E →L[𝕜] F) ≃ₗᵢ[𝕜] E [×n.succ]→L[𝕜] F := (continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm
y : E
hy : y ∈ s
⊢ iteratedFDerivWithin 𝕜 n.succ f s y = (⇑I ∘ iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s) y

Tactic:
ext m

Goal state after:
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
hs : UniqueDiffOn 𝕜 s
n : ℕ
IH :
  ∀ {x : E},
    x ∈ s →
      ∀ (m : Fin (n + 1) → E),
        (iteratedFDerivWithin 𝕜 (n + 1) f s x) m =
          ((iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s x) (init m)) (m (last n))
x : E
hx : x ∈ s
m✝ : Fin (n + 1 + 1) → E
I : (E [×n]→L[𝕜] E →L[𝕜] F) ≃ₗᵢ[𝕜] E [×n.succ]→L[𝕜] F := (continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm
y : E
hy : y ∈ s
m : Fin n.succ → E
⊢ (iteratedFDerivWithin 𝕜 n.succ f s y) m = ((⇑I ∘ iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s) y) m
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: 𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
x : E
n : ℕ
hs : UniqueDiffOn 𝕜 s
hx : x ∈ s
⊢ iteratedFDerivWithin 𝕜 (n + 1) f s x =
    (⇑(continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm ∘ iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s)
      x

Tactic:
ext m

Goal state after:
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
x : E
n : ℕ
hs : UniqueDiffOn 𝕜 s
hx : x ∈ s
m : Fin (n + 1) → E
⊢ (iteratedFDerivWithin 𝕜 (n + 1) f s x) m =
    ((⇑(continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm ∘ iteratedFDerivWithin 𝕜 n (fun y ↦ fderivWithin 𝕜 f s y) s)
        x)
      m
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: case zero
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
n : ℕ∞ω
p : E → FormalMultilinearSeries 𝕜 E F
h : HasFTaylorSeriesUpToOn n f p s
hs : UniqueDiffOn 𝕜 s
x : E
hmn : ↑0 ≤ n
hx : x ∈ s
⊢ (continuousMultilinearCurryFin0 𝕜 E F).symm (f x) = (⇑(continuousMultilinearCurryFin0 𝕜 E F).symm ∘ f) x

Tactic:
comp_apply

Goal state after:
case zero
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
s : Set E
f : E → F
n : ℕ∞ω
p : E → FormalMultilinearSeries 𝕜 E F
h : HasFTaylorSeriesUpToOn n f p s
hs : UniqueDiffOn 𝕜 s
x : E
hmn : ↑0 ≤ n
hx : x ∈ s
⊢ (continuousMultilinearCurryFin0 𝕜 E F).symm (f x) = (continuousMultilinearCurryFin0 𝕜 E F).symm (f x)
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: 𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f f₁ : E → F
x : E
h : f₁ =ᶠ[𝓝 x] f
⊢ ftaylorSeries 𝕜 f₁ =ᶠ[𝓝 x] ftaylorSeries 𝕜 f

Tactic:
filter_upwards [eventually_eventuallyEq_nhds.2 h] with e₁ he₁
  ext n : 1
  exact (he₁.iteratedFDeriv 𝕜 n).eq_of_nhds

Goal state after:
Module: Mathlib.Analysis.Calculus.ContDiff.FTaylorSeries

Goal state before:
pp: 𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
x : E
n : ℕ
⊢ iteratedFDeriv 𝕜 (n + 1) f x =
    (⇑(continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm ∘ iteratedFDeriv 𝕜 n fun y ↦ fderiv 𝕜 f y) x

Tactic:
ext m

Goal state after:
𝕜 : Type u
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type uE
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type uF
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : E → F
x : E
n : ℕ
m : Fin (n + 1) → E
⊢ (iteratedFDeriv 𝕜 (n + 1) f x) m =
    ((⇑(continuousMultilinearCurryRightEquiv' 𝕜 n E F).symm ∘ iteratedFDeriv 𝕜 n fun y ↦ fderiv 𝕜 f y) x) m
Module: Mathlib.Analysis.Calculus.Deriv.Mul

Goal state before:
pp: 𝕜 : Type u
inst✝² : NontriviallyNormedField 𝕜
x : 𝕜
s : Set 𝕜
𝔸 : Type u_3
inst✝¹ : NormedRing 𝔸
inst✝ : NormedAlgebra 𝕜 𝔸
c d : 𝕜 → 𝔸
hc : DifferentiableWithinAt 𝕜 c s x
hd : DifferentiableWithinAt 𝕜 d s x
⊢ derivWithin (fun y ↦ c y * d y) s x = derivWithin c s x * d x + c x * derivWithin d s x

Tactic:
by
  by_cases hsx : UniqueDiffWithinAt 𝕜 s x
  · exact (hc.hasDerivWithinAt.mul hd.hasDerivWithinAt).derivWithin hsx
  · simp [derivWithin_zero_of_not_uniqueDiffWithinAt hsx]

Goal state after:
Module: Mathlib.Analysis.Calculus.FDeriv.Analytic

Goal state before:
pp: 𝕜 : Type u_1
inst✝⁴ : NontriviallyNormedField 𝕜
E : Type u
inst✝³ : NormedAddCommGroup E
inst✝² : NormedSpace 𝕜 E
F : Type v
inst✝¹ : NormedAddCommGroup F
inst✝ : NormedSpace 𝕜 F
f : OpenPartialHomeomorph E F
a : F
i : E ≃L[𝕜] F
h0 : a ∈ f.target
h : AnalyticAt 𝕜 (↑f) (↑f.symm a)
h' : fderiv 𝕜 (↑f) (↑f.symm a) = ↑i
⊢ AnalyticAt 𝕜 (↑f.symm) a

Tactic:
by
  have : a = f (f.symm a) := by simp [h0]
  rw [this]
  exact f.analyticAt_symm' (by simp [h0]) h h'

Goal state after: