mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case inr
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁵ : Field R
inst✝⁴ : LinearOrder R
inst✝³ : IsStrictOrderedRing R
inst✝² : AddCommGroup V
inst✝¹ : Module R V
inst✝ : AddTorsor V P
s : AffineSubspace R P
x y : P
h : s.SSameSide x y
ho : s.WOppSide x y
hy : y ∈ s
⊢ False

Tactic:
· exact h.2.2 hy

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case mp.inl
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁵ : Field R
inst✝⁴ : LinearOrder R
inst✝³ : IsStrictOrderedRing R
inst✝² : AddCommGroup V
inst✝¹ : Module R V
inst✝ : AddTorsor V P
s : AffineSubspace R P
x p : P
hx : x ∉ s
hp : p ∈ s
y p₂ : P
hp₂ : p₂ ∈ s
h : x -ᵥ p = 0
⊢ ∃ a, 0 ≤ a ∧ ∃ b ∈ ↑s, a • (x -ᵥ p) +ᵥ b = y

Tactic:
rw [vsub_eq_zero_iff_eq] at h
      exact False.elim (hx (h.symm ▸ hp))

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case mp.inl
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁵ : Field R
inst✝⁴ : LinearOrder R
inst✝³ : IsStrictOrderedRing R
inst✝² : AddCommGroup V
inst✝¹ : Module R V
inst✝ : AddTorsor V P
s : AffineSubspace R P
x p : P
hx : x ∉ s
hp : p ∈ s
y : P
hy : y ∉ s
p₂ : P
hp₂ : p₂ ∈ s
h : x -ᵥ p = 0
⊢ ∃ a, 0 < a ∧ ∃ b ∈ ↑s, a • (x -ᵥ p) +ᵥ b = y

Tactic:
rw [vsub_eq_zero_iff_eq] at h
      exact False.elim (hx (h.symm ▸ hp))

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case mp.inl
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁵ : Field R
inst✝⁴ : LinearOrder R
inst✝³ : IsStrictOrderedRing R
inst✝² : AddCommGroup V
inst✝¹ : Module R V
inst✝ : AddTorsor V P
s : AffineSubspace R P
x p : P
hx : x ∉ s
hp : p ∈ s
y p₂ : P
hp₂ : p₂ ∈ s
h : x -ᵥ p = 0
⊢ ∃ a ≤ 0, ∃ b ∈ ↑s, a • (x -ᵥ p) +ᵥ b = y

Tactic:
rw [vsub_eq_zero_iff_eq] at h
      exact False.elim (hx (h.symm ▸ hp))

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case mp.inl
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁵ : Field R
inst✝⁴ : LinearOrder R
inst✝³ : IsStrictOrderedRing R
inst✝² : AddCommGroup V
inst✝¹ : Module R V
inst✝ : AddTorsor V P
s : AffineSubspace R P
x p : P
hx : x ∉ s
hp : p ∈ s
y : P
hy : y ∉ s
p₂ : P
hp₂ : p₂ ∈ s
h : x -ᵥ p = 0
⊢ ∃ a < 0, ∃ b ∈ ↑s, a • (x -ᵥ p) +ᵥ b = y

Tactic:
rw [vsub_eq_zero_iff_eq] at h
      exact False.elim (hx (h.symm ▸ hp))

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).SSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : w₁ i ≠ 0
⊢ SignType.sign (w₁ i) = SignType.sign (w₂ i)

Tactic:
have h0' : w₂ i ≠ 0 :=
    (s.affineCombination_mem_affineSpan_faceOpposite_iff hw₂).not.1 h.right_notMem

Goal state after:
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).SSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : w₁ i ≠ 0
h0' : w₂ i ≠ 0
⊢ SignType.sign (w₁ i) = SignType.sign (w₂ i)
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).SOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
      ((Finset.affineCombination R Finset.univ s.points) w₂) ↔
    SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∧ w₁ i ≠ 0

Tactic:
refine ⟨fun h ↦ ?_, fun ⟨hs, h0⟩ ↦ ?_⟩
  · have h0 : w₁ i ≠ 0 :=
      (s.affineCombination_mem_affineSpan_faceOpposite_iff hw₁).not.1 h.left_notMem
    refine ⟨?_, h0⟩
    have h0' : w₂ i ≠ 0 :=
      (s.affineCombination_mem_affineSpan_faceOpposite_iff hw₂).not.1 h.right_notMem
    rcases sign_eq_sign_or_eq_neg h0 h0' with hs | hs
    · exfalso
      exact (s.sSameSide_affineSpan_faceOpposite_of_sign_eq hw₁ hw₂ hs h0).wSameSide.not_sOppSide h
    · exact hs
  · rcases h0.lt_or_gt with h' | h'
    · rw [sign_neg h', neg_inj, eq_comm, sign_eq_one_iff] at hs
      exact (s.sOppSide_affineSpan_faceOpposite_of_pos_of_neg hw₂ hw₁ hs h').symm
    · rw [sign_pos h', eq_comm, neg_eq_iff_eq_neg, sign_eq_neg_one_iff] at hs
      exact s.sOppSide_affineSpan_faceOpposite_of_pos_of_neg hw₁ hw₂ h' hs

Goal state after:
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case refine_1
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
⊢ SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0

Tactic:
by_cases h0 : w₁ i = 0

Goal state after:
case pos
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : w₁ i = 0
⊢ SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0

case neg
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : ¬w₁ i = 0
⊢ SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case refine_2
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)

Tactic:
by_cases h0 : w₁ i = 0

Goal state after:
case pos
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
h0 : w₁ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)

case neg
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
h0 : ¬w₁ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WSameSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
Module: Mathlib.MeasureTheory.Integral.Layercake

Goal state before:
pp: α : Type u_1
inst✝¹ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
inst✝ : SFinite μ
f_nn : 0 ≤ f
f_mble : Measurable f
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_mble : Measurable g
g_nn : ∀ t > 0, 0 ≤ g t
g_intble' : ∀ (t : ℝ), 0 ≤ t → IntervalIntegrable g volume 0 t
integrand_eq : ∀ (ω : α), ENNReal.ofReal (∫ (t : ℝ) in 0..f ω, g t) = ∫⁻ (t : ℝ) in Ioc 0 (f ω), ENNReal.ofReal (g t)
⊢ (fun y ↦ ∫⁻ (x : α), (Ioc 0 (f x)).indicator (fun t ↦ ENNReal.ofReal (g t)) y ∂μ) = fun a ↦
    (Ioi 0).indicator (fun t ↦ μ {a | t ≤ f a} * ENNReal.ofReal (g t)) a

Tactic:
funext s

Goal state after:
α : Type u_1
inst✝¹ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
inst✝ : SFinite μ
f_nn : 0 ≤ f
f_mble : Measurable f
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_mble : Measurable g
g_nn : ∀ t > 0, 0 ≤ g t
g_intble' : ∀ (t : ℝ), 0 ≤ t → IntervalIntegrable g volume 0 t
integrand_eq : ∀ (ω : α), ENNReal.ofReal (∫ (t : ℝ) in 0..f ω, g t) = ∫⁻ (t : ℝ) in Ioc 0 (f ω), ENNReal.ofReal (g t)
s : ℝ
⊢ ∫⁻ (x : α), (Ioc 0 (f x)).indicator (fun t ↦ ENNReal.ofReal (g t)) s ∂μ =
    (Ioi 0).indicator (fun t ↦ μ {a | t ≤ f a} * ENNReal.ofReal (g t)) s
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case refine_1
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
⊢ SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0

Tactic:
by_cases h0 : w₁ i = 0

Goal state after:
case pos
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : w₁ i = 0
⊢ SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0

case neg
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h :
  (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
h0 : ¬w₁ i = 0
⊢ SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
Module: Mathlib.Analysis.Convex.Side

Goal state before:
pp: case refine_2
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)

Tactic:
by_cases h0 : w₁ i = 0

Goal state after:
case pos
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
h0 : w₁ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)

case neg
R : Type u_1
V : Type u_2
P : Type u_4
inst✝⁶ : Field R
inst✝⁵ : LinearOrder R
inst✝⁴ : IsStrictOrderedRing R
inst✝³ : AddCommGroup V
inst✝² : Module R V
inst✝¹ : AffineSpace V P
n : ℕ
inst✝ : NeZero n
s : Simplex R P n
w₁ w₂ : Fin (n + 1) → R
hw₁ : ∑ j, w₁ j = 1
hw₂ : ∑ j, w₂ j = 1
i : Fin (n + 1)
h : SignType.sign (w₁ i) = -SignType.sign (w₂ i) ∨ w₁ i = 0 ∨ w₂ i = 0
h0 : ¬w₁ i = 0
⊢ (affineSpan R (Set.range (s.faceOpposite i).points)).WOppSide ((Finset.affineCombination R Finset.univ s.points) w₁)
    ((Finset.affineCombination R Finset.univ s.points) w₂)
Module: Mathlib.Analysis.SpecialFunctions.JapaneseBracket

Goal state before:
pp: case h₁
E : Type u_1
inst✝ : NormedAddCommGroup E
r : ℝ
x : E
hr : 0 < r
⊢ 1 + ‖x‖ ≤ √2 * √(1 + ‖x‖ ^ 2)

Tactic:
apply one_add_norm_le_sqrt_two_mul_sqrt

Goal state after:
Module: Mathlib.Analysis.SpecialFunctions.JapaneseBracket

Goal state before:
pp: case ha
r : ℝ
n : ℕ
hnr : ↑n < r
hr : 0 < r
x : ℝ
hx : x ∈ Ioc 0 1
⊢ 1 ≤ x ^ (-r⁻¹)

Tactic:
exact Real.one_le_rpow_of_pos_of_le_one_of_nonpos hx.1 hx.2 (by simpa using hr.le)

Goal state after:
Module: Mathlib.MeasureTheory.Integral.Layercake

Goal state before:
pp: case pos
α : Type u_1
inst✝¹ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
inst✝ : SFinite μ
f_nn : 0 ≤ f
f_mble : Measurable f
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_mble : Measurable g
g_nn : ∀ t > 0, 0 ≤ g t
g_intble' : ∀ (t : ℝ), 0 ≤ t → IntervalIntegrable g volume 0 t
integrand_eq : ∀ (ω : α), ENNReal.ofReal (∫ (t : ℝ) in 0..f ω, g t) = ∫⁻ (t : ℝ) in Ioc 0 (f ω), ENNReal.ofReal (g t)
p_fst : α
p_snd : ℝ
h : p_snd ∈ Ioc 0 (f p_fst)
⊢ (Ioc 0 (f p_fst)).indicator (fun t ↦ ENNReal.ofReal (g t)) p_snd =
    {p | p.2 ∈ Ioc 0 (f p.1)}.indicator (fun p ↦ ENNReal.ofReal (g p.2)) (p_fst, p_snd)

Tactic:
have h' : (p_fst, p_snd) ∈ {p : α × ℝ | p.snd ∈ Ioc 0 (f p.fst)} := h
      rw [Set.indicator_of_mem h', Set.indicator_of_mem h]

Goal state after:
Module: Mathlib.Analysis.SpecialFunctions.JapaneseBracket

Goal state before:
pp: case e_6
E : Type u_1
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace ℝ E
inst✝³ : FiniteDimensional ℝ E
inst✝² : MeasurableSpace E
inst✝¹ : BorelSpace E
μ : Measure E
inst✝ : μ.IsAddHaarMeasure
r : ℝ
hnr : ↑(finrank ℝ E) < r
hr : 0 < r
h_meas : Measurable fun ω ↦ (1 + ‖ω‖) ^ (-r)
h_pos : ∀ (x : E), 0 ≤ (1 + ‖x‖) ^ (-r)
t : ℝ
ht : 0 < t
x : E
⊢ x ∈ {a | t ≤ (1 + ‖a‖) ^ (-r)} ↔ x ∈ Metric.closedBall 0 (t ^ (-r⁻¹) - 1)

Tactic:
simp only [mem_ofPred_eq, mem_closedBall_zero_iff]

Goal state after:
case e_6
E : Type u_1
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace ℝ E
inst✝³ : FiniteDimensional ℝ E
inst✝² : MeasurableSpace E
inst✝¹ : BorelSpace E
μ : Measure E
inst✝ : μ.IsAddHaarMeasure
r : ℝ
hnr : ↑(finrank ℝ E) < r
hr : 0 < r
h_meas : Measurable fun ω ↦ (1 + ‖ω‖) ^ (-r)
h_pos : ∀ (x : E), 0 ≤ (1 + ‖x‖) ^ (-r)
t : ℝ
ht : 0 < t
x : E
⊢ t ≤ (1 + ‖x‖) ^ (-r) ↔ ‖x‖ ≤ t ^ (-r⁻¹) - 1
Module: Mathlib.MeasureTheory.Integral.Layercake

Goal state before:
pp: α : Type u_1
inst✝ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
f_nn : 0 ≤ f
f_mble : Measurable f
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_mble : Measurable g
g_nn : ∀ t > 0, 0 ≤ g t
f_nonneg : ∀ (ω : α), 0 ≤ f ω
H1 : ¬g =ᵐ[volume.restrict (Ioi 0)] 0
s : ℝ
s_pos : s > 0
hs : 0 < ∫ (x : ℝ) in Ioc 0 s, g x ∂volume
h's : μ {a | s < f a} = ∞
A : ∫⁻ (t : ℝ) in Ioi 0, μ {a | t ≤ f a} * ENNReal.ofReal (g t) = ∞
⊢ ∫⁻ (x : α) in {a | s < f a}, ENNReal.ofReal (∫ (t : ℝ) in 0..s, g t) ∂μ ≤
    ∫⁻ (ω : α) in {a | s < f a}, ENNReal.ofReal (∫ (t : ℝ) in 0..f ω, g t) ∂μ

Tactic:
apply setLIntegral_mono' (measurableSet_lt measurable_const f_mble) (fun a ha ↦ ?_)
          apply ENNReal.ofReal_le_ofReal
          apply intervalIntegral.integral_mono_interval le_rfl s_pos.le (le_of_lt ha)
          · filter_upwards [ae_restrict_mem measurableSet_Ioc] with t ht using g_nn _ ht.1
          · exact g_intble _ (s_pos.trans ha)

Goal state after:
Module: Mathlib.MeasureTheory.Integral.Layercake

Goal state before:
pp: α : Type u_1
inst✝ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
f_nn : 0 ≤ᵐ[μ] f
f_mble : AEMeasurable f μ
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_nn : ∀ᵐ (t : ℝ) ∂volume.restrict (Ioi 0), 0 ≤ g t
G : ℝ → ℝ
G_mble : Measurable G
G_nn : 0 ≤ G
g_eq_G : g =ᵐ[volume.restrict (Ioi 0)] G
g_eq_G_on : ∀ (t : ℝ), g =ᵐ[volume.restrict (Ioc 0 t)] G
G_intble : ∀ t > 0, IntervalIntegrable G volume 0 t
F : α → ℝ
F_mble : Measurable F
F_nn : 0 ≤ F
f_eq_F : f =ᵐ[μ] F
eq₁ :
  ∫⁻ (t : ℝ) in Ioi 0, μ {a | t ≤ f a} * ENNReal.ofReal (g t) =
    ∫⁻ (t : ℝ) in Ioi 0, μ {a | t ≤ F a} * ENNReal.ofReal (G t)
ω : α
fω_nn : f ω = F ω
⊢ ENNReal.ofReal (∫ (t : ℝ) in 0..f ω, g t) = ENNReal.ofReal (∫ (t : ℝ) in 0..F ω, G t)

Tactic:
rw [fω_nn]

Goal state after:
α : Type u_1
inst✝ : MeasurableSpace α
f : α → ℝ
g : ℝ → ℝ
μ : Measure α
f_nn : 0 ≤ᵐ[μ] f
f_mble : AEMeasurable f μ
g_intble : ∀ t > 0, IntervalIntegrable g volume 0 t
g_nn : ∀ᵐ (t : ℝ) ∂volume.restrict (Ioi 0), 0 ≤ g t
G : ℝ → ℝ
G_mble : Measurable G
G_nn : 0 ≤ G
g_eq_G : g =ᵐ[volume.restrict (Ioi 0)] G
g_eq_G_on : ∀ (t : ℝ), g =ᵐ[volume.restrict (Ioc 0 t)] G
G_intble : ∀ t > 0, IntervalIntegrable G volume 0 t
F : α → ℝ
F_mble : Measurable F
F_nn : 0 ≤ F
f_eq_F : f =ᵐ[μ] F
eq₁ :
  ∫⁻ (t : ℝ) in Ioi 0, μ {a | t ≤ f a} * ENNReal.ofReal (g t) =
    ∫⁻ (t : ℝ) in Ioi 0, μ {a | t ≤ F a} * ENNReal.ofReal (G t)
ω : α
fω_nn : f ω = F ω
⊢ ENNReal.ofReal (∫ (t : ℝ) in 0..F ω, g t) = ENNReal.ofReal (∫ (t : ℝ) in 0..F ω, G t)
Module: Mathlib.Analysis.Distribution.TemperateGrowth

Goal state before:
pp: case hg₂
D : Type u_4
E : Type u_5
F : Type u_6
inst✝⁵ : NormedAddCommGroup E
inst✝⁴ : NormedSpace ℝ E
inst✝³ : NormedAddCommGroup F
inst✝² : NormedSpace ℝ F
inst✝¹ : NormedAddCommGroup D
inst✝ : NormedSpace ℝ D
g : E → F
f : D → E
hg : HasTemperateGrowth g
hf : HasTemperateGrowth f
⊢ ∀ (N : ℕ), ∃ k C, ∃ (_ : 0 ≤ C), ∀ n ≤ N, ∀ x ∈ Set.univ, ‖iteratedFDerivWithin ℝ n g Set.univ x‖ ≤ C * (1 + ‖x‖) ^ k

Tactic:
· simpa [iteratedFDerivWithin_univ] using hg.norm_iteratedFDeriv_le_uniform

Goal state after:
Module: Mathlib.Analysis.Distribution.TestFunction

Goal state before:
pp: 𝕜 : Type u_1
𝕂 : Type u_2
inst✝¹⁷ : NontriviallyNormedField 𝕜
E : Type u_3
inst✝¹⁶ : NormedAddCommGroup E
inst✝¹⁵ : NormedSpace ℝ E
Ω Ω₁ Ω₂ : Opens E
F : Type u_4
inst✝¹⁴ : NormedAddCommGroup F
inst✝¹³ : NormedSpace ℝ F
inst✝¹² : NormedSpace 𝕜 F
F' : Type u_5
inst✝¹¹ : NormedAddCommGroup F'
inst✝¹⁰ : NormedSpace ℝ F'
inst✝⁹ : NormedSpace 𝕜 F'
n n₁ n₂ k : ℕ∞
V : Type u_6
inst✝⁸ : AddCommGroup V
inst✝⁷ : Module ℝ V
t : TopologicalSpace V
inst✝⁶ : IsTopologicalAddGroup V
inst✝⁵ : ContinuousSMul ℝ V
inst✝⁴ : LocallyConvexSpace ℝ V
inst✝³ : Algebra ℝ 𝕜
inst✝² : IsScalarTower ℝ 𝕜 F
inst✝¹ : Module 𝕜 V
inst✝ : IsScalarTower ℝ 𝕜 V
toFun : 𝓓^{n}(Ω, F) → V
T : (K : Compacts E) → ↑K ⊆ ↑Ω → 𝓓^{n}_{K}(E, F) →L[𝕜] V
toFun_eq_T :
  ∀ (K : Compacts E) (K_sub_Ω : ↑K ⊆ ↑Ω) (f : 𝓓^{n}_{K}(E, F)), toFun (ofSupportedIn K_sub_Ω f) = (T K K_sub_Ω) f
toFun_add : ∀ (f g : 𝓓^{n}(Ω, F)), toFun (f + g) = toFun f + toFun g
c : 𝕜
f : 𝓓^{n}(Ω, F)
K : Compacts E := { carrier := tsupport ⇑f, isCompact' := ⋯ }
⊢ toFun (c • f) = c • toFun f

Tactic:
have K_sub_Ω : (K : Set E) ⊆ Ω := f.tsupport_subset

Goal state after:
𝕜 : Type u_1
𝕂 : Type u_2
inst✝¹⁷ : NontriviallyNormedField 𝕜
E : Type u_3
inst✝¹⁶ : NormedAddCommGroup E
inst✝¹⁵ : NormedSpace ℝ E
Ω Ω₁ Ω₂ : Opens E
F : Type u_4
inst✝¹⁴ : NormedAddCommGroup F
inst✝¹³ : NormedSpace ℝ F
inst✝¹² : NormedSpace 𝕜 F
F' : Type u_5
inst✝¹¹ : NormedAddCommGroup F'
inst✝¹⁰ : NormedSpace ℝ F'
inst✝⁹ : NormedSpace 𝕜 F'
n n₁ n₂ k : ℕ∞
V : Type u_6
inst✝⁸ : AddCommGroup V
inst✝⁷ : Module ℝ V
t : TopologicalSpace V
inst✝⁶ : IsTopologicalAddGroup V
inst✝⁵ : ContinuousSMul ℝ V
inst✝⁴ : LocallyConvexSpace ℝ V
inst✝³ : Algebra ℝ 𝕜
inst✝² : IsScalarTower ℝ 𝕜 F
inst✝¹ : Module 𝕜 V
inst✝ : IsScalarTower ℝ 𝕜 V
toFun : 𝓓^{n}(Ω, F) → V
T : (K : Compacts E) → ↑K ⊆ ↑Ω → 𝓓^{n}_{K}(E, F) →L[𝕜] V
toFun_eq_T :
  ∀ (K : Compacts E) (K_sub_Ω : ↑K ⊆ ↑Ω) (f : 𝓓^{n}_{K}(E, F)), toFun (ofSupportedIn K_sub_Ω f) = (T K K_sub_Ω) f
toFun_add : ∀ (f g : 𝓓^{n}(Ω, F)), toFun (f + g) = toFun f + toFun g
c : 𝕜
f : 𝓓^{n}(Ω, F)
K : Compacts E := { carrier := tsupport ⇑f, isCompact' := ⋯ }
K_sub_Ω : ↑K ⊆ ↑Ω
⊢ toFun (c • f) = c • toFun f
Module: Mathlib.Analysis.InnerProductSpace.Rayleigh

Goal state before:
pp: F : Type u_3
inst✝² : NormedAddCommGroup F
inst✝¹ : InnerProductSpace ℝ F
inst✝ : CompleteSpace F
T : F →L[ℝ] F
hT : IsSelfAdjoint T
x₀ : F
hextr : IsLocalExtrOn T.reApplyInnerSelf (sphere 0 ‖x₀‖) x₀
a b : ℝ
h₁ : (a, b) ≠ 0
h₂ : a • x₀ + b • T x₀ = 0
hx₀ : ¬x₀ = 0
hb : b = 0
⊢ a ≠ 0

Tactic:
simpa [hb] using! h₁

Goal state after:
Module: Mathlib.Analysis.Distribution.TemperateGrowth

Goal state before:
pp: E : Type u_5
F : Type u_6
inst✝³ : NormedAddCommGroup E
inst✝² : MeasurableSpace E
inst✝¹ : NormedAddCommGroup F
μ : Measure E
inst✝ : μ.HasTemperateGrowth
f : E → F
C₁ C₂ : ℝ
k : ℕ
hf : ∀ (x : E), ‖f x‖ ≤ C₁
h'f : ∀ (x : E), ‖x‖ ^ (k + μ.integrablePower) * ‖f x‖ ≤ C₂
⊢ ∫ (x : E), ‖x‖ ^ k * ‖f x‖ ∂μ ≤ ∫ (a : E), 2 ^ μ.integrablePower * (1 + ‖a‖) ^ (-↑μ.integrablePower) * (C₁ + C₂) ∂μ

Tactic:
apply integral_mono_of_nonneg

Goal state after:
case hf
E : Type u_5
F : Type u_6
inst✝³ : NormedAddCommGroup E
inst✝² : MeasurableSpace E
inst✝¹ : NormedAddCommGroup F
μ : Measure E
inst✝ : μ.HasTemperateGrowth
f : E → F
C₁ C₂ : ℝ
k : ℕ
hf : ∀ (x : E), ‖f x‖ ≤ C₁
h'f : ∀ (x : E), ‖x‖ ^ (k + μ.integrablePower) * ‖f x‖ ≤ C₂
⊢ 0 ≤ᵐ[μ] fun a ↦ ‖a‖ ^ k * ‖f a‖

case hgi
E : Type u_5
F : Type u_6
inst✝³ : NormedAddCommGroup E
inst✝² : MeasurableSpace E
inst✝¹ : NormedAddCommGroup F
μ : Measure E
inst✝ : μ.HasTemperateGrowth
f : E → F
C₁ C₂ : ℝ
k : ℕ
hf : ∀ (x : E), ‖f x‖ ≤ C₁
h'f : ∀ (x : E), ‖x‖ ^ (k + μ.integrablePower) * ‖f x‖ ≤ C₂
⊢ Integrable (fun a ↦ 2 ^ μ.integrablePower * (1 + ‖a‖) ^ (-↑μ.integrablePower) * (C₁ + C₂)) μ

case h
E : Type u_5
F : Type u_6
inst✝³ : NormedAddCommGroup E
inst✝² : MeasurableSpace E
inst✝¹ : NormedAddCommGroup F
μ : Measure E
inst✝ : μ.HasTemperateGrowth
f : E → F
C₁ C₂ : ℝ
k : ℕ
hf : ∀ (x : E), ‖f x‖ ≤ C₁
h'f : ∀ (x : E), ‖x‖ ^ (k + μ.integrablePower) * ‖f x‖ ≤ C₂
⊢ (fun a ↦ ‖a‖ ^ k * ‖f a‖) ≤ᵐ[μ] fun a ↦ 2 ^ μ.integrablePower * (1 + ‖a‖) ^ (-↑μ.integrablePower) * (C₁ + C₂)
Module: Mathlib.Data.Fin.Tuple.Sort

Goal state before:
pp: n : ℕ
σ : Equiv.Perm (Fin n)
⊢ ∀ (i j : Fin n), i < j → σ (σ⁻¹ i) = σ (σ⁻¹ j) → σ⁻¹ i < σ⁻¹ j

Tactic:
· intro _ _ hij h
    exact (hij.ne (by simpa using h)).elim

Goal state after:
Module: Mathlib.Analysis.Normed.Operator.Compact.FredholmAlternative

Goal state before:
pp: case succ
𝕜 : Type u_1
X : Type u_2
inst✝² : NontriviallyNormedField 𝕜
inst✝¹ : NormedAddCommGroup X
inst✝ : NormedSpace 𝕜 X
S : End 𝕜 X
hS_not_surj : ¬Function.Surjective ⇑S
hS_anti : Topology.IsClosedEmbedding ⇑S
c : 𝕜
hc : 1 < ‖c‖
R : ℝ
hR : ‖c‖ < R
V : ℕ → Submodule 𝕜 X := fun n ↦ (LinearMap.iterateRange S) n
hV_succ : ∀ (n : ℕ), V (n + 1) = Submodule.map S (V n)
n : ℕ
ih : IsClosed ↑(V n)
⊢ IsClosed ↑(V (n + 1))

Tactic:
rw [hV_succ]
      apply hS_anti.isClosedMap _ ih

Goal state after: