mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.NumberTheory.NumberField.Ideal.Asymptotics

Goal state before:
pp: case convert_2
K : Type u_1
inst✝¹ : Field K
inst✝ : NumberField K
C : ClassGroup (𝓞 K)
h₁ :
  ∀ (s : ℝ),
    {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ s} =
      ⇑(toMixed K) ⁻¹' {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ s}
h₂ : {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ 1} = normLeOne K
J : ↥(Ideal (𝓞 K))⁰
hJ : ClassGroup.mk0 J = C⁻¹
h₃ : ↑(absNorm ↑J) ≠ 0
x✝¹ : euclidean.mixedSpace K
x✝ : ℝ
h : 0 ≤ x✝
⊢ mixedEmbedding.norm ((toMixed K) (x✝ • x✝¹)) =
    x✝ ^ Module.finrank ℝ (euclidean.mixedSpace K) * mixedEmbedding.norm ((toMixed K) x✝¹)

pp: case convert_3
K : Type u_1
inst✝¹ : Field K
inst✝ : NumberField K
C : ClassGroup (𝓞 K)
h₁ :
  ∀ (s : ℝ),
    {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ s} =
      ⇑(toMixed K) ⁻¹' {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ s}
h₂ : {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ 1} = normLeOne K
J : ↥(Ideal (𝓞 K))⁰
hJ : ClassGroup.mk0 J = C⁻¹
h₃ : ↑(absNorm ↑J) ≠ 0
⊢ MeasurableSet {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ 1}

pp: case convert_4
K : Type u_1
inst✝¹ : Field K
inst✝ : NumberField K
C : ClassGroup (𝓞 K)
h₁ :
  ∀ (s : ℝ),
    {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ s} =
      ⇑(toMixed K) ⁻¹' {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ s}
h₂ : {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ 1} = normLeOne K
J : ↥(Ideal (𝓞 K))⁰
hJ : ClassGroup.mk0 J = C⁻¹
h₃ : ↑(absNorm ↑J) ≠ 0
⊢ MeasureTheory.volume
      (frontier {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ 1}) =
    0

Tactic:
· rw [map_smul, mixedEmbedding.norm_smul, euclidean.finrank, abs_of_nonneg h]

Goal state after:
case convert_3
K : Type u_1
inst✝¹ : Field K
inst✝ : NumberField K
C : ClassGroup (𝓞 K)
h₁ :
  ∀ (s : ℝ),
    {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ s} =
      ⇑(toMixed K) ⁻¹' {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ s}
h₂ : {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ 1} = normLeOne K
J : ↥(Ideal (𝓞 K))⁰
hJ : ClassGroup.mk0 J = C⁻¹
h₃ : ↑(absNorm ↑J) ≠ 0
⊢ MeasurableSet {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ 1}

case convert_4
K : Type u_1
inst✝¹ : Field K
inst✝ : NumberField K
C : ClassGroup (𝓞 K)
h₁ :
  ∀ (s : ℝ),
    {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ s} =
      ⇑(toMixed K) ⁻¹' {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ s}
h₂ : {x | x ∈ fundamentalCone K ∧ mixedEmbedding.norm x ≤ 1} = normLeOne K
J : ↥(Ideal (𝓞 K))⁰
hJ : ClassGroup.mk0 J = C⁻¹
h₃ : ↑(absNorm ↑J) ≠ 0
⊢ MeasureTheory.volume
      (frontier {x | x ∈ ⇑(toMixed K) ⁻¹' fundamentalCone K ∧ mixedEmbedding.norm ((toMixed K) x) ≤ 1}) =
    0
Module: Mathlib.Topology.Algebra.Nonarchimedean.Completion

Goal state before:
pp: G : Type u_1
inst✝³ : AddGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformAddGroup G
inst✝ : NonarchimedeanAddGroup G
U : Set (Completion G)
⊢ U ∈ 𝓝 0 → ∃ V, ↑V ⊆ U

Tactic:
hU

Goal state after:
G : Type u_1
inst✝³ : AddGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformAddGroup G
inst✝ : NonarchimedeanAddGroup G
U : Set (Completion G)
hU : U ∈ 𝓝 0
⊢ ∃ V, ↑V ⊆ U
Module: Mathlib.Topology.Algebra.InfiniteSum.Nonarchimedean

Goal state before:
pp: α : Type u_1
G : Type u_2
inst✝³ : CommGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformGroup G
inst✝ : NonarchimedeanGroup G
f : α → G
hf : Tendsto f cofinite (𝓝 1)
U : Set G
⊢ U ∈ 𝓝 1 → ∃ s, ∀ (t : Finset α), Disjoint t s → ∏ b ∈ t, f b ∈ U

Tactic:
hU

Goal state after:
α : Type u_1
G : Type u_2
inst✝³ : CommGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformGroup G
inst✝ : NonarchimedeanGroup G
f : α → G
hf : Tendsto f cofinite (𝓝 1)
U : Set G
hU : U ∈ 𝓝 1
⊢ ∃ s, ∀ (t : Finset α), Disjoint t s → ∏ b ∈ t, f b ∈ U
Module: Mathlib.Topology.Algebra.InfiniteSum.Nonarchimedean

Goal state before:
pp: G : Type u_2
inst✝³ : CommGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformGroup G
inst✝ : NonarchimedeanGroup G
f : ℕ → G
hf : Tendsto (fun n ↦ f (n + 1) / f n) atTop (𝓝 1)
this : Tendsto (fun p ↦ f p.2 / f p.1) atTop (𝓝 1)
⊢ CauchySeq f

Tactic:
by simpa [CauchySeq,
      cauchy_map_iff, prod_atTop_atTop_eq, uniformity_eq_comap_nhds_one G, atTop_neBot]

Goal state after:
Module: Mathlib.Topology.Algebra.InfiniteSum.Nonarchimedean

Goal state before:
pp: G : Type u_2
inst✝³ : CommGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformGroup G
inst✝ : NonarchimedeanGroup G
f : ℕ → G
hf : Tendsto (fun n ↦ f (n + 1) / f n) atTop (𝓝 1)
⊢ ∀ s ∈ 𝓝 1, ∃ a, ∀ (b : ℕ × ℕ), a ≤ b → f b.2 / f b.1 ∈ s

Tactic:
intro s hs

Goal state after:
G : Type u_2
inst✝³ : CommGroup G
inst✝² : UniformSpace G
inst✝¹ : IsUniformGroup G
inst✝ : NonarchimedeanGroup G
f : ℕ → G
hf : Tendsto (fun n ↦ f (n + 1) / f n) atTop (𝓝 1)
s : Set G
hs : s ∈ 𝓝 1
⊢ ∃ a, ∀ (b : ℕ × ℕ), a ≤ b → f b.2 / f b.1 ∈ s
Module: Mathlib.NumberTheory.Padics.AddChar

Goal state before:
pp: p : ℕ
inst✝⁴ : Fact (Nat.Prime p)
R : Type u_1
inst✝³ : NormedRing R
inst✝² : Algebra ℤ_[p] R
inst✝¹ : IsBoundedSMul ℤ_[p] R
inst✝ : IsUltrametricDist R
κ : AddChar ℤ_[p] R
hκ : Continuous[_, PseudoMetricSpace.toUniformSpace.toTopologicalSpace] ⇑κ
⊢ Tendsto (fun n ↦ (κ 1 - 1) ^ n) atTop (𝓝 0)

Tactic:
refine (PadicInt.fwdDiff_tendsto_zero ⟨κ, hκ⟩).congr fun n ↦ ?_

Goal state after:
p : ℕ
inst✝⁴ : Fact (Nat.Prime p)
R : Type u_1
inst✝³ : NormedRing R
inst✝² : Algebra ℤ_[p] R
inst✝¹ : IsBoundedSMul ℤ_[p] R
inst✝ : IsUltrametricDist R
κ : AddChar ℤ_[p] R
hκ : Continuous[_, PseudoMetricSpace.toUniformSpace.toTopologicalSpace] ⇑κ
n : ℕ
⊢ Δ_[1]^[n] (⇑{ toFun := ⇑κ, continuous_toFun := hκ }) 0 = (κ 1 - 1) ^ n
Module: Mathlib.NumberTheory.Padics.AddChar

Goal state before:
pp: p : ℕ
inst✝⁶ : Fact (Nat.Prime p)
R : Type u_1
inst✝⁵ : NormedRing R
inst✝⁴ : Algebra ℤ_[p] R
inst✝³ : IsBoundedSMul ℤ_[p] R
inst✝² : IsUltrametricDist R
inst✝¹ : CompleteSpace R
inst✝ : NormMulClass R
⊢ (fun r ↦ Tendsto (fun x ↦ r ^ x) atTop (𝓝 0)) = fun r ↦ ‖r‖ < 1

Tactic:
simp only [tendsto_pow_atTop_nhds_zero_iff_norm_lt_one]

Goal state after:
Module: Mathlib.NumberTheory.Ostrowski

Goal state before:
pp: p : ℕ
inst✝ : Fact (Nat.Prime p)
c : ℝ
hc₀ : 0 < c
hc : (fun x ↦ real x ^ c) = ⇑(padic p)
⊢ False

Tactic:
apply_fun (· 2) at hc

Goal state after:
p : ℕ
inst✝ : Fact (Nat.Prime p)
c : ℝ
hc₀ : 0 < c
hc : (fun x ↦ real x ^ c) 2 = (padic p) 2
⊢ False
Module: Mathlib.NumberTheory.Padics.MahlerBasis

Goal state before:
pp: M : Type u_1
G : Type u_2
inst✝¹ : AddCommMonoidWithOne M
inst✝ : AddCommGroup G
f : M → G
n R : ℕ
hR : 1 ≤ R
aux : Δ_[1]^[n + R] f 0 = R.choose (R - 1 + 1) • Δ_[1]^[n + R] f 0
⊢ ∑ x ∈ range R, R.choose (x + 1) • Δ_[1]^[n + (x + 1)] f 0 =
    ∑ k ∈ range (n + 1), ((-1) ^ (n - k) * ↑(n.choose k)) • (f (↑k + ↑R) - f ↑k)

Tactic:
← sub_eq_iff_eq_add.mpr (sum_range_succ' (fun x ↦ R.choose x • Δ_[1]^[n + x] f 0) R),

Goal state after:
M : Type u_1
G : Type u_2
inst✝¹ : AddCommMonoidWithOne M
inst✝ : AddCommGroup G
f : M → G
n R : ℕ
hR : 1 ≤ R
aux : Δ_[1]^[n + R] f 0 = R.choose (R - 1 + 1) • Δ_[1]^[n + R] f 0
⊢ ∑ k ∈ range (R + 1), R.choose k • Δ_[1]^[n + k] f 0 - R.choose 0 • Δ_[1]^[n + 0] f 0 =
    ∑ k ∈ range (n + 1), ((-1) ^ (n - k) * ↑(n.choose k)) • (f (↑k + ↑R) - f ↑k)
Module: Mathlib.NumberTheory.Padics.HeightOneSpectrum

Goal state before:
pp: R : Type u_2
inst✝⁴ : CommRing R
inst✝³ : Algebra R ℚ
inst✝² : IsIntegralClosure R ℤ ℚ
inst✝¹ : IsDedekindDomain R
inst✝ : IsFractionRing R ℚ
v : HeightOneSpectrum R
⊢ (HeightOneSpectrum.valuation ℚ v).IsEquiv (padicValuation ↑(primesEquiv v))

Tactic:
simp [primesEquiv, Valuation.isEquiv_iff_val_le_one, valuation_le_one_iff_den,
    padicValuation_le_one_iff, natGenerator_dvd_iff,
    map_natCast (IsIntegralClosure.intEquiv R) _ ▸ Ideal.apply_mem_of_equiv_iff]

Goal state after:
Module: Mathlib.NumberTheory.Pell

Goal state before:
pp: b : ℤ
a : Solution₁ (b * b)
ha : 1 < a.x
hp : a.x ^ 2 - b * b * a.y ^ 2 = 1
⊢ False

Tactic:
← sq,

Goal state after:
b : ℤ
a : Solution₁ (b * b)
ha : 1 < a.x
hp : a.x ^ 2 - b ^ 2 * a.y ^ 2 = 1
⊢ False
Module: Mathlib.NumberTheory.Padics.Hensel

Goal state before:
pp: p : ℕ
inst✝² : Fact (Nat.Prime p)
R : Type u_1
inst✝¹ : CommSemiring R
inst✝ : Algebra R ℤ_[p]
F : Polynomial R
a : ℤ_[p]
hnorm : ‖(Polynomial.aeval a) F‖ < ‖(Polynomial.aeval a) (Polynomial.derivative F)‖ ^ 2
⊢ T_gen p F a < 1

Tactic:
by
  have h := (div_lt_one (deriv_sq_norm_pos hnorm)).2 hnorm
  rw [T_def]; exact h

Goal state after:
Module: Mathlib.NumberTheory.Pell

Goal state before:
pp: d : ℤ
h₀ : 0 < d
hd : ¬IsSquare d
ξ : ℝ := √↑d
hξ : Irrational ξ
M : ℤ
hM₁ : 2 * |ξ| + 1 < ↑M
hM : {q | |q.num ^ 2 - d * ↑q.den ^ 2| < M}.Infinite
m : ℤ
hm : {q | q.num ^ 2 - d * ↑q.den ^ 2 = m}.Infinite
hm₀ : m ≠ 0
this : NeZero m.natAbs
f : ℚ → ZMod m.natAbs × ZMod m.natAbs := fun q ↦ (↑q.num, ↑q.den)
q₁ : ℚ
h₁ : q₁.num ^ 2 - d * ↑q₁.den ^ 2 = m
q₂ : ℚ
h₂ : q₂.num ^ 2 - d * ↑q₂.den ^ 2 = m
hne : q₁ ≠ q₂
hqf : f q₁ = f q₂
hq1 : ↑q₁.num = ↑q₂.num
hq2 : ↑q₁.den = ↑q₂.den
⊢ ↑q₂.num * ↑q₂.num - ↑d * (↑q₂.den * ↑q₂.den) = 0

Tactic:
← sq,

Goal state after:
d : ℤ
h₀ : 0 < d
hd : ¬IsSquare d
ξ : ℝ := √↑d
hξ : Irrational ξ
M : ℤ
hM₁ : 2 * |ξ| + 1 < ↑M
hM : {q | |q.num ^ 2 - d * ↑q.den ^ 2| < M}.Infinite
m : ℤ
hm : {q | q.num ^ 2 - d * ↑q.den ^ 2 = m}.Infinite
hm₀ : m ≠ 0
this : NeZero m.natAbs
f : ℚ → ZMod m.natAbs × ZMod m.natAbs := fun q ↦ (↑q.num, ↑q.den)
q₁ : ℚ
h₁ : q₁.num ^ 2 - d * ↑q₁.den ^ 2 = m
q₂ : ℚ
h₂ : q₂.num ^ 2 - d * ↑q₂.den ^ 2 = m
hne : q₁ ≠ q₂
hqf : f q₁ = f q₂
hq1 : ↑q₁.num = ↑q₂.num
hq2 : ↑q₁.den = ↑q₂.den
⊢ ↑q₂.num ^ 2 - ↑d * (↑q₂.den * ↑q₂.den) = 0
Module: Mathlib.NumberTheory.Pell

Goal state before:
pp: x y : ℤ
hy : y ≠ 0
a : ℤ
h₀ : 0 < a * a
hxy : x ^ 2 - a * a * y ^ 2 = 1
⊢ False

Tactic:
← sq,

Goal state after:
x y : ℤ
hy : y ≠ 0
a : ℤ
h₀ : 0 < a * a
hxy : x ^ 2 - a ^ 2 * y ^ 2 = 1
⊢ False
Module: Mathlib.NumberTheory.Pell

Goal state before:
pp: case calc.step
d : ℤ
a₁ : Solution₁ d
h : IsFundamental a₁
a : Solution₁ d
hax : 1 < a.x
hay : 0 < a.y
⊢ a.y * (a₁.x * a₁.x) < a₁.y * (d * (a.y * a₁.y) + a.x)

Tactic:
← sq,

Goal state after:
case calc.step
d : ℤ
a₁ : Solution₁ d
h : IsFundamental a₁
a : Solution₁ d
hax : 1 < a.x
hay : 0 < a.y
⊢ a.y * a₁.x ^ 2 < a₁.y * (d * (a.y * a₁.y) + a.x)
Module: Mathlib.NumberTheory.RamificationInertia.Basic

Goal state before:
pp: R : Type u
inst✝¹⁶ : CommRing R
S : Type v
inst✝¹⁵ : CommRing S
inst✝¹⁴ : Algebra R S
p : Ideal R
K : Type u_1
inst✝¹³ : Field K
inst✝¹² : Algebra R K
L : Type u_2
inst✝¹¹ : Field L
inst✝¹⁰ : Algebra S L
inst✝⁹ : IsFractionRing S L
inst✝⁸ : IsDomain R
inst✝⁷ : IsDomain S
inst✝⁶ : Algebra K L
inst✝⁵ : Module.Finite R S
inst✝⁴ : Algebra R L
inst✝³ : IsScalarTower R S L
inst✝² : IsScalarTower R K L
inst✝¹ : Algebra.IsAlgebraic R S
inst✝ : IsTorsionFree R K
hp : p ≠ ⊤
b : Set S
hb' : Submodule.span R b ⊔ Submodule.restrictScalars R (map f p) = ⊤
hRL : Function.Injective ⇑(algebraMap R L)
M : Submodule R S := Submodule.span R b
n : ℕ
a : Fin n → S ⧸ M
ha : Submodule.span R (Set.range a) = ⊤
smul_top_eq : p • ⊤ = ⊤
exists_sum : ∀ (x : S ⧸ M), ∃ a', (∀ (i : Fin n), a' i ∈ p) ∧ ∑ i, a' i • a i = x
A' : Fin n → Fin n → R
hA'p : ∀ (i i_1 : Fin n), A' i i_1 ∈ p
hA' : ∀ (i : Fin n), ∑ i_1, A' i i_1 • a i_1 = a i
A : Matrix (Fin n) (Fin n) R := Matrix.of A' - 1
B : Matrix (Fin n) (Fin n) R := A.adjugate
A_smul : ∀ (i : Fin n), ∑ j, A i j • a j = 0
d_smul : ∀ (i : Fin n), A.det • a i = 0
x : S
hx : x ∈ Submodule.restrictScalars R (S ∙ f A.det)
⊢ x ∈ M

Tactic:
Submodule.restrictScalars_mem

Goal state after:
R : Type u
inst✝¹⁶ : CommRing R
S : Type v
inst✝¹⁵ : CommRing S
inst✝¹⁴ : Algebra R S
p : Ideal R
K : Type u_1
inst✝¹³ : Field K
inst✝¹² : Algebra R K
L : Type u_2
inst✝¹¹ : Field L
inst✝¹⁰ : Algebra S L
inst✝⁹ : IsFractionRing S L
inst✝⁸ : IsDomain R
inst✝⁷ : IsDomain S
inst✝⁶ : Algebra K L
inst✝⁵ : Module.Finite R S
inst✝⁴ : Algebra R L
inst✝³ : IsScalarTower R S L
inst✝² : IsScalarTower R K L
inst✝¹ : Algebra.IsAlgebraic R S
inst✝ : IsTorsionFree R K
hp : p ≠ ⊤
b : Set S
hb' : Submodule.span R b ⊔ Submodule.restrictScalars R (map f p) = ⊤
hRL : Function.Injective ⇑(algebraMap R L)
M : Submodule R S := Submodule.span R b
n : ℕ
a : Fin n → S ⧸ M
ha : Submodule.span R (Set.range a) = ⊤
smul_top_eq : p • ⊤ = ⊤
exists_sum : ∀ (x : S ⧸ M), ∃ a', (∀ (i : Fin n), a' i ∈ p) ∧ ∑ i, a' i • a i = x
A' : Fin n → Fin n → R
hA'p : ∀ (i i_1 : Fin n), A' i i_1 ∈ p
hA' : ∀ (i : Fin n), ∑ i_1, A' i i_1 • a i_1 = a i
A : Matrix (Fin n) (Fin n) R := Matrix.of A' - 1
B : Matrix (Fin n) (Fin n) R := A.adjugate
A_smul : ∀ (i : Fin n), ∑ j, A i j • a j = 0
d_smul : ∀ (i : Fin n), A.det • a i = 0
x : S
hx : x ∈ S ∙ f A.det
⊢ x ∈ M
Module: Mathlib.NumberTheory.Padics.Hensel

Goal state before:
pp: p : ℕ
inst✝² : Fact (Nat.Prime p)
R : Type u_1
inst✝¹ : CommSemiring R
inst✝ : Algebra R ℤ_[p]
F : Polynomial R
a : ℤ_[p]
hnorm : ‖(Polynomial.aeval a) F‖ < ‖(Polynomial.aeval a) (Polynomial.derivative F)‖ ^ 2
ha : (Polynomial.aeval a) F = 0
⊢ ‖a - a‖ < ‖(Polynomial.aeval a) (Polynomial.derivative F)‖

Tactic:
by simp [deriv_ne_zero hnorm]

Goal state after:
Module: Mathlib.NumberTheory.RamificationInertia.Basic

Goal state before:
pp: R : Type u
inst✝¹⁶ : CommRing R
S : Type v
inst✝¹⁵ : CommRing S
inst✝¹⁴ : Algebra R S
p : Ideal R
K : Type u_1
inst✝¹³ : Field K
inst✝¹² : Algebra R K
L : Type u_2
inst✝¹¹ : Field L
inst✝¹⁰ : Algebra S L
inst✝⁹ : IsFractionRing S L
inst✝⁸ : IsDomain R
inst✝⁷ : IsDomain S
inst✝⁶ : Algebra K L
inst✝⁵ : Module.Finite R S
inst✝⁴ : Algebra R L
inst✝³ : IsScalarTower R S L
inst✝² : IsScalarTower R K L
inst✝¹ : Algebra.IsAlgebraic R S
inst✝ : IsTorsionFree R K
hp : p ≠ ⊤
b : Set S
hb' : Submodule.span R b ⊔ Submodule.restrictScalars R (map f p) = ⊤
hRL : Function.Injective ⇑(algebraMap R L)
M : Submodule R S := Submodule.span R b
n : ℕ
a : Fin n → S ⧸ M
ha : Submodule.span R (Set.range a) = ⊤
smul_top_eq : p • ⊤ = ⊤
exists_sum : ∀ (x : S ⧸ M), ∃ a', (∀ (i : Fin n), a' i ∈ p) ∧ ∑ i, a' i • a i = x
A' : Fin n → Fin n → R
hA'p : ∀ (i i_1 : Fin n), A' i i_1 ∈ p
hA' : ∀ (i : Fin n), ∑ i_1, A' i i_1 • a i_1 = a i
A : Matrix (Fin n) (Fin n) R := Matrix.of A' - 1
B : Matrix (Fin n) (Fin n) R := A.adjugate
A_smul : ∀ (i : Fin n), ∑ j, A i j • a j = 0
d_smul : ∀ (i : Fin n), A.det • a i = 0
span_d : Submodule.restrictScalars R (S ∙ f A.det) ≤ M
this : Nontrivial (R ⧸ p)
⊢ (-1).det = (-1) ^ n

Tactic:
Matrix.det_neg,

Goal state after:
R : Type u
inst✝¹⁶ : CommRing R
S : Type v
inst✝¹⁵ : CommRing S
inst✝¹⁴ : Algebra R S
p : Ideal R
K : Type u_1
inst✝¹³ : Field K
inst✝¹² : Algebra R K
L : Type u_2
inst✝¹¹ : Field L
inst✝¹⁰ : Algebra S L
inst✝⁹ : IsFractionRing S L
inst✝⁸ : IsDomain R
inst✝⁷ : IsDomain S
inst✝⁶ : Algebra K L
inst✝⁵ : Module.Finite R S
inst✝⁴ : Algebra R L
inst✝³ : IsScalarTower R S L
inst✝² : IsScalarTower R K L
inst✝¹ : Algebra.IsAlgebraic R S
inst✝ : IsTorsionFree R K
hp : p ≠ ⊤
b : Set S
hb' : Submodule.span R b ⊔ Submodule.restrictScalars R (map f p) = ⊤
hRL : Function.Injective ⇑(algebraMap R L)
M : Submodule R S := Submodule.span R b
n : ℕ
a : Fin n → S ⧸ M
ha : Submodule.span R (Set.range a) = ⊤
smul_top_eq : p • ⊤ = ⊤
exists_sum : ∀ (x : S ⧸ M), ∃ a', (∀ (i : Fin n), a' i ∈ p) ∧ ∑ i, a' i • a i = x
A' : Fin n → Fin n → R
hA'p : ∀ (i i_1 : Fin n), A' i i_1 ∈ p
hA' : ∀ (i : Fin n), ∑ i_1, A' i i_1 • a i_1 = a i
A : Matrix (Fin n) (Fin n) R := Matrix.of A' - 1
B : Matrix (Fin n) (Fin n) R := A.adjugate
A_smul : ∀ (i : Fin n), ∑ j, A i j • a j = 0
d_smul : ∀ (i : Fin n), A.det • a i = 0
span_d : Submodule.restrictScalars R (S ∙ f A.det) ≤ M
this : Nontrivial (R ⧸ p)
⊢ (-1) ^ Fintype.card (Fin n) * Matrix.det 1 = (-1) ^ n
Module: Mathlib.NumberTheory.SumFourSquares

Goal state before:
pp: a b c d x y z w : ℕ
⊢ (↑a * ↑x - ↑b * ↑y - ↑c * ↑z - ↑d * ↑w).natAbs ^ 2 + (↑a * ↑y + ↑b * ↑x + ↑c * ↑w - ↑d * ↑z).natAbs ^ 2 +
        (↑a * ↑z - ↑b * ↑w + ↑c * ↑x + ↑d * ↑y).natAbs ^ 2 +
      (↑a * ↑w + ↑b * ↑z - ↑c * ↑y + ↑d * ↑x).natAbs ^ 2 =
    (a ^ 2 + b ^ 2 + c ^ 2 + d ^ 2) * (x ^ 2 + y ^ 2 + z ^ 2 + w ^ 2)

Tactic:
by
  rw [← Int.natCast_inj]
  push_cast
  simp only [sq_abs, _root_.euler_four_squares]

Goal state after:
Module: Mathlib.NumberTheory.SumTwoSquares

Goal state before:
pp: p n : ℕ
hp : p ∈ n.primeFactors
hs : IsSquare (-1)
y : ZMod p
h : -1 = y * y
⊢ p % 4 ≠ 3

Tactic:
← sq,

Goal state after:
p n : ℕ
hp : p ∈ n.primeFactors
hs : IsSquare (-1)
y : ZMod p
h : -1 = y ^ 2
⊢ p % 4 ≠ 3
Module: Mathlib.NumberTheory.SumTwoSquares

Goal state before:
pp: n x y : ℕ
h : n = x ^ 2 + y ^ 2
hxy : ¬(x = 0 ∧ y = 0)
hg : 0 < x.gcd y
g x₁ y₁ : ℕ
left✝ : 0 < g
h₂ : x₁.Coprime y₁
h₃ : x = x₁ * g
h₄ : y = y₁ * g
⊢ n = g ^ 2 * (x₁ ^ 2 + y₁ ^ 2)

Tactic:
rw [h, h₃, h₄]; ring

Goal state after:
Module: Mathlib.NumberTheory.RamificationInertia.Basic

Goal state before:
pp: R : Type u
inst✝² : CommRing R
S : Type v
inst✝¹ : CommRing S
inst✝ : Algebra R S
p : Ideal R
P : Ideal S
i : ℕ
a : S
a_mem : a ∈ P ^ i
x : S
⊢ p.quotientToQuotientRangePowQuotSuccAux P a_mem (Submodule.Quotient.mk x) =
    Submodule.Quotient.mk ⟨(Quotient.mk (P ^ e)) (a * x), ⋯⟩

Tactic:
apply Quotient.map'_mk''

Goal state after:
Module: Mathlib.NumberTheory.RamificationInertia.Basic

Goal state before:
pp: R : Type u
inst✝⁵ : CommRing R
S : Type v
inst✝⁴ : CommRing S
inst✝³ : Algebra R S
p : Ideal R
P : Ideal S
inst✝² : IsDedekindDomain S
inst✝¹ : p.IsMaximal
inst✝ : P.IsPrime
hP0 : P ≠ ⊥
he : e ≠ 0
this✝ : NeZero e := { out := he }
this : Module.rank (R ⧸ p) ↥(map (Quotient.mk (P ^ e)) (P ^ 0)) = (e - 0) • Module.rank (R ⧸ p) (S ⧸ P)
⊢ Module.rank (R ⧸ p) (S ⧸ P ^ e) = e • Module.rank (R ⧸ p) (S ⧸ P)

Tactic:
rw [pow_zero, Nat.sub_zero, Ideal.one_eq_top, Ideal.map_top] at this

Goal state after:
R : Type u
inst✝⁵ : CommRing R
S : Type v
inst✝⁴ : CommRing S
inst✝³ : Algebra R S
p : Ideal R
P : Ideal S
inst✝² : IsDedekindDomain S
inst✝¹ : p.IsMaximal
inst✝ : P.IsPrime
hP0 : P ≠ ⊥
he : e ≠ 0
this✝ : NeZero e := { out := he }
this : Module.rank (R ⧸ p) ↥⊤ = e • Module.rank (R ⧸ p) (S ⧸ P)
⊢ Module.rank (R ⧸ p) (S ⧸ P ^ e) = e • Module.rank (R ⧸ p) (S ⧸ P)
Module: Mathlib.NumberTheory.Transcendental.Liouville.Residual

Goal state before:
pp: ⊢ IsGδ {x | Liouville x}

Tactic:
setOfPred_liouville_eq_iInter_iUnion

Goal state after:
⊢ IsGδ (⋂ n, ⋃ a, ⋃ b, ⋃ (_ : 1 < b), ball (↑a / ↑b) (1 / ↑b ^ n) \ {↑a / ↑b})
Module: Mathlib.NumberTheory.Transcendental.Liouville.Residual

Goal state before:
pp: case refine_1
⊢ {x | Liouville x} ⊆ ⋂ n, ⋃ a, ⋃ b, ⋃ (_ : 1 < b), ball (↑a / ↑b) (1 / ↑b ^ n)

Tactic:
setOfPred_liouville_eq_iInter_iUnion

Goal state after:
case refine_1
⊢ ⋂ n, ⋃ a, ⋃ b, ⋃ (_ : 1 < b), ball (↑a / ↑b) (1 / ↑b ^ n) \ {↑a / ↑b} ⊆
    ⋂ n, ⋃ a, ⋃ b, ⋃ (_ : 1 < b), ball (↑a / ↑b) (1 / ↑b ^ n)
Module: Mathlib.NumberTheory.Wilson

Goal state before:
pp: n : ℕ
h : n ≠ 1
⊢ Prime n ↔ ↑(n - 1)! = -1

Tactic:
by
  refine ⟨fun h1 => ?_, fun h2 => prime_of_fac_equiv_neg_one h2 h⟩
  have := Fact.mk h1
  exact ZMod.wilsons_lemma n

Goal state after:
Module: Mathlib.NumberTheory.Transcendental.Liouville.LiouvilleWith

Goal state before:
pp: x : ℝ
hx : Liouville x
n : ℕ
H : ∀ᶠ (x_1 : ℕ) in atTop, ∀ (a : ℤ), x ≠ ↑a / ↑x_1 → 1 / ↑x_1 ^ n ≤ |x - ↑a / ↑x_1|
⊢ False

Tactic:
simp only [eventually_atTop] at H

Goal state after:
x : ℝ
hx : Liouville x
n : ℕ
H : ∃ a, ∀ (b : ℕ), a ≤ b → ∀ (a : ℤ), x ≠ ↑a / ↑b → 1 / ↑b ^ n ≤ |x - ↑a / ↑b|
⊢ False
Module: Mathlib.NumberTheory.WellApproximable

Goal state before:
pp: A : Type u_1
inst✝ : SeminormedCommGroup A
m : ℕ
δ : ℝ
n : ℕ
hm : 0 < m
a : A
ha : a ∈ approxOrderOf A (n * m) δ
b : A
hb : orderOf b = n * m
hab : a ∈ ball b δ
⊢ (fun y ↦ y ^ m) a ∈ approxOrderOf A n (↑m * δ)

Tactic:
replace hb : b ^ m ∈ {y : A | orderOf y = n} := by
    rw [mem_ofPred_eq, orderOf_pow' b hm.ne', hb, Nat.gcd_mul_left_left, n.mul_div_cancel hm]

Goal state after:
A : Type u_1
inst✝ : SeminormedCommGroup A
m : ℕ
δ : ℝ
n : ℕ
hm : 0 < m
a : A
ha : a ∈ approxOrderOf A (n * m) δ
b : A
hab : a ∈ ball b δ
hb : b ^ m ∈ {y | orderOf y = n}
⊢ (fun y ↦ y ^ m) a ∈ approxOrderOf A n (↑m * δ)
Module: Mathlib.Order.Concept

Goal state before:
pp: α : Type u_2
β : Type u_3
r : α → β → Prop
c d : Concept α β r
⊢ c.intent ⊆ d.intent ↔ d ≤ c

Tactic:
refine ⟨fun h => ?_, fun h => ?_⟩
  · rw [← extent_subset_extent_iff, ← c.lowerPolar_intent, ← d.lowerPolar_intent]
    exact lowerPolar_anti _ h
  · rw [← c.upperPolar_extent, ← d.upperPolar_extent]
    exact upperPolar_anti _ h

Goal state after:
Module: Mathlib.Order.Filter.CardinalInter

Goal state before:
pp: α : Type u
l : Filter α
⊢ ∀ (S : Set (Set α)), #↑S < ℵ₀ → (∀ s ∈ S, s ∈ l) → ⋂₀ S ∈ l

Tactic:
simp_all only [lt_aleph0_iff_subtype_finite, ofPred_mem_eq, sInter_mem,
      implies_true]

Goal state after:
Module: Mathlib.Order.Filter.CardinalInter

Goal state before:
pp: case refine_1
ι α β : Type u
c : Cardinal.{u}
l✝ : Filter α
inst✝ : CardinalInterFilter l✝ c
l : Set (Set α)
hc : 2 < c
hUnion : ∀ (S : Set (Set α)), #↑S < c → (∀ s ∈ S, s ∈ l) → ⋃₀ S ∈ l
hmono : ∀ t ∈ l, ∀ s ⊆ t, s ∈ l
S : Set (Set α)
hSc : #↑S < c
hSp : S ⊆ {s | sᶜ ∈ l}
⊢ ∀ s ∈ compl '' S, s ∈ l

Tactic:
intro s hs

Goal state after:
case refine_1
ι α β : Type u
c : Cardinal.{u}
l✝ : Filter α
inst✝ : CardinalInterFilter l✝ c
l : Set (Set α)
hc : 2 < c
hUnion : ∀ (S : Set (Set α)), #↑S < c → (∀ s ∈ S, s ∈ l) → ⋃₀ S ∈ l
hmono : ∀ t ∈ l, ∀ s ⊆ t, s ∈ l
S : Set (Set α)
hSc : #↑S < c
hSp : S ⊆ {s | sᶜ ∈ l}
s : Set α
hs : s ∈ compl '' S
⊢ s ∈ l
Module: Mathlib.Order.Filter.CardinalInter

Goal state before:
pp: case mpr
α : Type u
c : Cardinal.{u}
g : Set (Set α)
f : Filter α
inst✝ : CardinalInterFilter f c
hc : 2 < c
h : g ⊆ f.sets
⊢ f ≤ cardinalGenerate g hc

Tactic:
intro s hs

Goal state after:
case mpr
α : Type u
c : Cardinal.{u}
g : Set (Set α)
f : Filter α
inst✝ : CardinalInterFilter f c
hc : 2 < c
h : g ⊆ f.sets
s : Set α
hs : s ∈ cardinalGenerate g hc
⊢ s ∈ f
Module: Mathlib.Order.Heyting.Regular

Goal state before:
pp: α : Type u_1
inst✝ : HeytingAlgebra α
a✝ b✝ : α
a b : Regular α
c : α
⊢ c ⊓ ↑a ≤ ↑b ↔ Disjoint (↑b)ᶜ (c ⊓ ↑a)

Tactic:
rw [b.prop.disjoint_compl_left_iff]

Goal state after:
Module: Mathlib.Order.PrimeIdeal

Goal state before:
pp: P : Type u_1
inst✝ : Preorder P
IF : Ideal.PrimePair P
⊢ IsIdeal (↑IF.F)ᶜ

Tactic:
IF.compl_F_eq_I

Goal state after:
P : Type u_1
inst✝ : Preorder P
IF : Ideal.PrimePair P
⊢ IsIdeal ↑IF.I
Module: Mathlib.Order.PrimeSeparator

Goal state before:
pp: case h
α : Type u_1
inst✝ : DistribLattice α
F : PFilter α
I : Ideal α
hFI : Disjoint ↑F ↑I
S : Set (Set α) := {J | IsIdeal J ∧ ↑I ⊆ J ∧ Disjoint (↑F) J}
Jset : Set α
left✝ : ↑I ⊆ Jset
hmax : Maximal (fun x ↦ x ∈ S) Jset
Jidl : IsIdeal Jset
IJ : ↑I ⊆ Jset
JF : Disjoint (↑F) Jset
J : Ideal α := Jidl.toIdeal
IJ' : I ≤ J
Jpr : J.IsProper
a₁ a₂ : α
ha₁ : a₁ ∉ J
ha₂ : a₂ ∉ J
J₁ : Ideal α := J ⊔ principal a₁
J₂ : Ideal α := J ⊔ principal a₂
a₁J₁ : a₁ ∈ J₁
a₂J₂ : a₂ ∈ J₂
J₁J : ↑J₁ ≠ Jset
J₂J : ↑J₂ ≠ Jset
J₁S : ↑J₁ ∉ S
J₂S : ↑J₂ ∉ S
J₁F : ¬Disjoint ↑F ↑J₁
⊢ a₁ ⊓ a₂ ∉ J

Tactic:
have J₂F : ¬ (Disjoint (F : Set α) J₂) := by
    intro hdis
    apply J₂S
    simp only [mem_ofPred_eq, SetLike.coe_subset_coe, S]
    exact ⟨J₂.isIdeal, le_trans IJ' le_sup_left, hdis⟩

Goal state after:
case h
α : Type u_1
inst✝ : DistribLattice α
F : PFilter α
I : Ideal α
hFI : Disjoint ↑F ↑I
S : Set (Set α) := {J | IsIdeal J ∧ ↑I ⊆ J ∧ Disjoint (↑F) J}
Jset : Set α
left✝ : ↑I ⊆ Jset
hmax : Maximal (fun x ↦ x ∈ S) Jset
Jidl : IsIdeal Jset
IJ : ↑I ⊆ Jset
JF : Disjoint (↑F) Jset
J : Ideal α := Jidl.toIdeal
IJ' : I ≤ J
Jpr : J.IsProper
a₁ a₂ : α
ha₁ : a₁ ∉ J
ha₂ : a₂ ∉ J
J₁ : Ideal α := J ⊔ principal a₁
J₂ : Ideal α := J ⊔ principal a₂
a₁J₁ : a₁ ∈ J₁
a₂J₂ : a₂ ∈ J₂
J₁J : ↑J₁ ≠ Jset
J₂J : ↑J₂ ≠ Jset
J₁S : ↑J₁ ∉ S
J₂S : ↑J₂ ∉ S
J₁F : ¬Disjoint ↑F ↑J₁
J₂F : ¬Disjoint ↑F ↑J₂
⊢ a₁ ⊓ a₂ ∉ J
Module: Mathlib.Order.Partition.Basic

Goal state before:
pp: α : Type u_1
x : α
u : Set α
P : Partition u
⊢ P.Rel x x ↔ x ∈ u

Tactic:
refine ⟨fun ⟨t, ht, hxP, _⟩ ↦ subset_of_mem ht hxP, fun hx ↦ ?_⟩
  obtain ⟨t, ⟨ht, hxt⟩, -⟩ := P.mem_iff_unique.mp hx
  exact ⟨t, ht, hxt, hxt⟩

Goal state after: