mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Algebra.Lie.LieTheorem

Goal state before:
pp: case inr
R : Type u_1
L : Type u_2
A : Type u_3
V : Type u_4
inst✝¹⁹ : CommRing R
inst✝¹⁸ : IsPrincipalIdealRing R
inst✝¹⁷ : IsDomain R
inst✝¹⁶ : CharZero R
inst✝¹⁵ : LieRing L
inst✝¹⁴ : LieAlgebra R L
inst✝¹³ : LieRing A
inst✝¹² : LieAlgebra R A
inst✝¹¹ : Bracket L A
inst✝¹⁰ : Bracket A L
inst✝⁹ : AddCommGroup V
inst✝⁸ : Module R V
inst✝⁷ : Module.Free R V
inst✝⁶ : Module.Finite R V
inst✝⁵ : LieRingModule L V
inst✝⁴ : LieModule R L V
inst✝³ : LieRingModule A V
inst✝² : LieModule R A V
inst✝¹ : IsLieTower L A V
inst✝ : IsLieTower A L V
χ : A → R
z : L
v : V
hv : ∀ (x : A), ⁅x, v⁆ = χ x • v
a : A
hv' : v ≠ 0
U' : ℕ →o Submodule R V :=
  { toFun := fun n ↦ Submodule.span R {x | ∃ i < n, ((toEnd R L V) z ^ i) v = x}, monotone' := ⋯ }
map_U'_le : ∀ (n : ℕ), Submodule.map ((toEnd R L V) z) (U' n) ≤ U' (n + 1)
n : ℕ
hn :
  ∀ (w : A),
    ∀ a < n + 1, (T χ w) (((toEnd R L V) z ^ a) v) ∈ Submodule.span R {x | ∃ i < n, ((toEnd R L V) z ^ i) v = x}
w : A
hm : n + 1 < n + 1 + 1
H : ∀ (w : A), ⁅w, ((toEnd R L V) z ^ n) v⁆ = (T χ w) (((toEnd R L V) z ^ n) v) + χ w • ((toEnd R L V) z ^ n) v
⊢ -((T χ ⁅z, w⁆) (((toEnd R L V) z ^ n) v) + χ ⁅z, w⁆ • ((toEnd R L V) z ^ n) v) +
        ⁅z, (T χ w) (((toEnd R L V) z ^ n) v) + χ w • ((toEnd R L V) z ^ n) v⁆ -
      χ w • ⁅z, ((toEnd R L V) z ^ n) v⁆ ∈
    Submodule.span R {x | ∃ i < n + 1, ((toEnd R L V) z ^ i) v = x}

Tactic:
lie_add,

Goal state after:
case inr
R : Type u_1
L : Type u_2
A : Type u_3
V : Type u_4
inst✝¹⁹ : CommRing R
inst✝¹⁸ : IsPrincipalIdealRing R
inst✝¹⁷ : IsDomain R
inst✝¹⁶ : CharZero R
inst✝¹⁵ : LieRing L
inst✝¹⁴ : LieAlgebra R L
inst✝¹³ : LieRing A
inst✝¹² : LieAlgebra R A
inst✝¹¹ : Bracket L A
inst✝¹⁰ : Bracket A L
inst✝⁹ : AddCommGroup V
inst✝⁸ : Module R V
inst✝⁷ : Module.Free R V
inst✝⁶ : Module.Finite R V
inst✝⁵ : LieRingModule L V
inst✝⁴ : LieModule R L V
inst✝³ : LieRingModule A V
inst✝² : LieModule R A V
inst✝¹ : IsLieTower L A V
inst✝ : IsLieTower A L V
χ : A → R
z : L
v : V
hv : ∀ (x : A), ⁅x, v⁆ = χ x • v
a : A
hv' : v ≠ 0
U' : ℕ →o Submodule R V :=
  { toFun := fun n ↦ Submodule.span R {x | ∃ i < n, ((toEnd R L V) z ^ i) v = x}, monotone' := ⋯ }
map_U'_le : ∀ (n : ℕ), Submodule.map ((toEnd R L V) z) (U' n) ≤ U' (n + 1)
n : ℕ
hn :
  ∀ (w : A),
    ∀ a < n + 1, (T χ w) (((toEnd R L V) z ^ a) v) ∈ Submodule.span R {x | ∃ i < n, ((toEnd R L V) z ^ i) v = x}
w : A
hm : n + 1 < n + 1 + 1
H : ∀ (w : A), ⁅w, ((toEnd R L V) z ^ n) v⁆ = (T χ w) (((toEnd R L V) z ^ n) v) + χ w • ((toEnd R L V) z ^ n) v
⊢ -((T χ ⁅z, w⁆) (((toEnd R L V) z ^ n) v) + χ ⁅z, w⁆ • ((toEnd R L V) z ^ n) v) +
        (⁅z, (T χ w) (((toEnd R L V) z ^ n) v)⁆ + ⁅z, χ w • ((toEnd R L V) z ^ n) v⁆) -
      χ w • ⁅z, ((toEnd R L V) z ^ n) v⁆ ∈
    Submodule.span R {x | ∃ i < n + 1, ((toEnd R L V) z ^ i) v = x}
Module: Mathlib.Algebra.Lie.Extension

Goal state before:
pp: R : Type u_1
N : Type u_2
L : Type u_3
M : Type u_4
inst✝⁷ : CommRing R
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra R L
inst✝⁴ : LieRing M
inst✝³ : LieAlgebra R M
inst✝² : IsLieAbelian M
inst✝¹ : LieRingModule L M
inst✝ : LieModule R L M
c : ↥(twoCocycle R L M)
⊢ { toFun := fun x ↦ ((ofProd c).symm x).1, map_add' := ⋯, map_smul' := ⋯, map_lie' := ⋯ }.range = ⊤

Tactic:
LieHom.range_eq_top

Goal state after:
R : Type u_1
N : Type u_2
L : Type u_3
M : Type u_4
inst✝⁷ : CommRing R
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra R L
inst✝⁴ : LieRing M
inst✝³ : LieAlgebra R M
inst✝² : IsLieAbelian M
inst✝¹ : LieRingModule L M
inst✝ : LieModule R L M
c : ↥(twoCocycle R L M)
⊢ Surjective ⇑{ toFun := fun x ↦ ((ofProd c).symm x).1, map_add' := ⋯, map_smul' := ⋯, map_lie' := ⋯ }
Module: Mathlib.Algebra.Lie.Extension

Goal state before:
pp: R : Type u_1
N : Type u_2
L : Type u_3
M : Type u_4
inst✝⁵ : CommRing R
inst✝⁴ : LieRing L
inst✝³ : LieAlgebra R L
inst✝² : LieRing M
inst✝¹ : LieAlgebra R M
inst✝ : IsLieAbelian M
E : Extension R M L
s : L →ₗ[R] E.L
hs : LeftInverse ⇑E.proj ⇑s
x y z : L
this :
  ⁅s x, ⁅s y, s z⁆⁆ - ⁅s x, s ⁅y, z⁆⁆ - (⁅s y, ⁅s x, s z⁆⁆ - ⁅s y, s ⁅x, z⁆⁆) + (⁅s z, ⁅s x, s y⁆⁆ - ⁅s z, s ⁅x, y⁆⁆) -
          (⁅s ⁅x, y⁆, s z⁆ - (s ⁅x, ⁅y, z⁆⁆ - s ⁅y, ⁅x, z⁆⁆)) +
        (⁅s ⁅x, z⁆, s y⁆ - (s ⁅x, ⁅z, y⁆⁆ - s ⁅z, ⁅x, y⁆⁆)) -
      (⁅s ⁅y, z⁆, s x⁆ - (s ⁅y, ⁅z, x⁆⁆ - s ⁅z, ⁅y, x⁆⁆)) =
    0
h : HasRightInverse ⇑E.proj := Surjective.hasRightInverse (proj_surjective E)
u : L
v : ↥E.proj.ker
⊢ ⁅s (E.proj (Exists.choose h u)), v⁆ = ⁅s u, v⁆

Tactic:
h.choose_spec _

Goal state after:
R : Type u_1
N : Type u_2
L : Type u_3
M : Type u_4
inst✝⁵ : CommRing R
inst✝⁴ : LieRing L
inst✝³ : LieAlgebra R L
inst✝² : LieRing M
inst✝¹ : LieAlgebra R M
inst✝ : IsLieAbelian M
E : Extension R M L
s : L →ₗ[R] E.L
hs : LeftInverse ⇑E.proj ⇑s
x y z : L
this :
  ⁅s x, ⁅s y, s z⁆⁆ - ⁅s x, s ⁅y, z⁆⁆ - (⁅s y, ⁅s x, s z⁆⁆ - ⁅s y, s ⁅x, z⁆⁆) + (⁅s z, ⁅s x, s y⁆⁆ - ⁅s z, s ⁅x, y⁆⁆) -
          (⁅s ⁅x, y⁆, s z⁆ - (s ⁅x, ⁅y, z⁆⁆ - s ⁅y, ⁅x, z⁆⁆)) +
        (⁅s ⁅x, z⁆, s y⁆ - (s ⁅x, ⁅z, y⁆⁆ - s ⁅z, ⁅x, y⁆⁆)) -
      (⁅s ⁅y, z⁆, s x⁆ - (s ⁅y, ⁅z, x⁆⁆ - s ⁅z, ⁅y, x⁆⁆)) =
    0
h : HasRightInverse ⇑E.proj := Surjective.hasRightInverse (proj_surjective E)
u : L
v : ↥E.proj.ker
⊢ ⁅s u, v⁆ = ⁅s u, v⁆
Module: Mathlib.LinearAlgebra.Matrix.Determinant.Bird.Correctness

Goal state before:
pp: R : Type u_1
inst✝ : CommRing R
n : ℕ
A : Matrix (Fin n) (Fin n) R
p : ℕ
i : Fin n
hEq1 : Eq1 A p
⊢ (-1) ^ (p + 1) * ∑ k > i, ∑ α ∈ S p k, bminor A k k α =
    (-1) ^ (p + 1) * ∑ α ∈ (Finset.Ioi i).biUnion fun k ↦ Finset.image (Fin.cons k) (S p k), pminor A α

Tactic:
Finset.sum_biUnion

Goal state after:
R : Type u_1
inst✝ : CommRing R
n : ℕ
A : Matrix (Fin n) (Fin n) R
p : ℕ
i : Fin n
hEq1 : Eq1 A p
⊢ (-1) ^ (p + 1) * ∑ k > i, ∑ α ∈ S p k, bminor A k k α =
    (-1) ^ (p + 1) * ∑ x > i, ∑ i ∈ Finset.image (Fin.cons x) (S p x), pminor A i

R : Type u_1
inst✝ : CommRing R
n : ℕ
A : Matrix (Fin n) (Fin n) R
p : ℕ
i : Fin n
hEq1 : Eq1 A p
⊢ (↑(Finset.Ioi i)).PairwiseDisjoint fun k ↦ Finset.image (Fin.cons k) (S p k)
Module: Mathlib.LinearAlgebra.Matrix.Determinant.Bird.Correctness

Goal state before:
pp: case succ
R : Type u_1
inst✝ : CommRing R
n : ℕ
A : Matrix (Fin n) (Fin n) R
p✝ p : ℕ
ih : Eq1 A p
i j : Fin n
⊢ (Spec.stepEntry A)^[p + 1] A i j = (-1) ^ (p + 1) * ∑ α ∈ S (p + 1) i, bminor A i j α

Tactic:
paper_eq3 A i j ih,

Goal state after:
case succ
R : Type u_1
inst✝ : CommRing R
n : ℕ
A : Matrix (Fin n) (Fin n) R
p✝ p : ℕ
ih : Eq1 A p
i j : Fin n
⊢ (-1) ^ (p + 1) * (∑ α ∈ S (p + 1) i, pminor A α * A i j - ∑ k > i, ∑ α ∈ S p i, bminor A i k α * A k j) =
    (-1) ^ (p + 1) * ∑ α ∈ S (p + 1) i, bminor A i j α
Module: Mathlib.Algebra.Lie.Weights.IsSimple

Goal state before:
pp: K : Type u_1
L : Type u_2
inst✝⁷ : Field K
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra K L
inst✝⁴ : FiniteDimensional K L
H : LieSubalgebra K L
inst✝³ : H.IsCartanSubalgebra
inst✝² : CharZero K
inst✝¹ : IsKilling K L
inst✝ : IsTriangularizable K (↥H) L
I : LieIdeal K L
α β : ↥LieSubalgebra.root
S : RootPairing (↥LieSubalgebra.root) K (Dual K ↥H) ↥H := rootSystem H
γ δ : ↥LieSubalgebra.root
hδ : rootSpace H ⇑↑δ ≤ LieSubmodule.restr I H
hp : ¬S.pairing δ γ = 0
hγ : rootSpace H ⇑(S.root' γ) ≤ LieSubmodule.restr I H
⊢ S.pairing ((S.reflectionPerm γ) δ) γ ≠ 0

Tactic:
← S.pairing_reflectionPerm γ δ γ,

Goal state after:
K : Type u_1
L : Type u_2
inst✝⁷ : Field K
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra K L
inst✝⁴ : FiniteDimensional K L
H : LieSubalgebra K L
inst✝³ : H.IsCartanSubalgebra
inst✝² : CharZero K
inst✝¹ : IsKilling K L
inst✝ : IsTriangularizable K (↥H) L
I : LieIdeal K L
α β : ↥LieSubalgebra.root
S : RootPairing (↥LieSubalgebra.root) K (Dual K ↥H) ↥H := rootSystem H
γ δ : ↥LieSubalgebra.root
hδ : rootSpace H ⇑↑δ ≤ LieSubmodule.restr I H
hp : ¬S.pairing δ γ = 0
hγ : rootSpace H ⇑(S.root' γ) ≤ LieSubmodule.restr I H
⊢ S.pairing δ ((S.reflectionPerm γ) γ) ≠ 0
Module: Mathlib.RingTheory.ChainOfDivisors

Goal state before:
pp: M : Type u_1
inst✝¹ : CommMonoidWithZero M
inst✝ : UniqueFactorizationMonoid M
q r : Associates M
n : ℕ
hn : n ≠ 0
c : Fin (n + 1) → Associates M
h₁ : StrictMono c
h₂ : ∀ {r : Associates M}, r ≤ q ↔ ∃ i, r = c i
hr : r ∣ q
hq : q ≠ 0
i : ℕ := (normalizedFactors r).card
hi : normalizedFactors r = Multiset.replicate i (c 1)
H : r = c 1 ^ i
this : (Finset.image (fun m ↦ c 1 ^ ↑m) Finset.univ).card = i + 1
a : Fin (i + 1)
left✝ : a ∈ Finset.univ
⊢ c 1 ^ ↑a ≤ q

Tactic:
refine dvd_trans ?_ hr

Goal state after:
M : Type u_1
inst✝¹ : CommMonoidWithZero M
inst✝ : UniqueFactorizationMonoid M
q r : Associates M
n : ℕ
hn : n ≠ 0
c : Fin (n + 1) → Associates M
h₁ : StrictMono c
h₂ : ∀ {r : Associates M}, r ≤ q ↔ ∃ i, r = c i
hr : r ∣ q
hq : q ≠ 0
i : ℕ := (normalizedFactors r).card
hi : normalizedFactors r = Multiset.replicate i (c 1)
H : r = c 1 ^ i
this : (Finset.image (fun m ↦ c 1 ^ ↑m) Finset.univ).card = i + 1
a : Fin (i + 1)
left✝ : a ∈ Finset.univ
⊢ c 1 ^ ↑a ∣ r
Module: Mathlib.RingTheory.ChainOfDivisors

Goal state before:
pp: case h
M : Type u_1
inst✝¹ : CommMonoidWithZero M
inst✝ : UniqueFactorizationMonoid M
q r : Associates M
n : ℕ
hn : n ≠ 0
c : Fin (n + 1) → Associates M
h₁ : StrictMono c
h₂ : ∀ {r : Associates M}, r ≤ q ↔ ∃ i, r = c i
hr : r ∣ q
hq : q ≠ 0
i : ℕ := ⋯
hi : normalizedFactors r = Multiset.replicate i (c 1)
H : r = c 1 ^ i
this : (Finset.image (fun m ↦ c 1 ^ ↑m) Finset.univ).card = i + 1
a : Fin (i + 1)
left✝ : a ∈ Finset.univ
⊢ r = c 1 ^ ↑a * c 1 ^ (i - ↑a)

Tactic:
pow_mul_pow_sub (c 1)

Goal state after:
case h
M : Type u_1
inst✝¹ : CommMonoidWithZero M
inst✝ : UniqueFactorizationMonoid M
q r : Associates M
n : ℕ
hn : n ≠ 0
c : Fin (n + 1) → Associates M
h₁ : StrictMono c
h₂ : ∀ {r : Associates M}, r ≤ q ↔ ∃ i, r = c i
hr : r ∣ q
hq : q ≠ 0
i : ℕ := (normalizedFactors r).card
hi : normalizedFactors r = Multiset.replicate i (c 1)
H : r = c 1 ^ i
this : (Finset.image (fun m ↦ c 1 ^ ↑m) Finset.univ).card = i + 1
a : Fin (i + 1)
left✝ : a ∈ Finset.univ
⊢ r = c 1 ^ i

case h
M : Type u_1
inst✝¹ : CommMonoidWithZero M
inst✝ : UniqueFactorizationMonoid M
q r : Associates M
n : ℕ
hn : n ≠ 0
c : Fin (n + 1) → Associates M
h₁ : StrictMono c
h₂ : ∀ {r : Associates M}, r ≤ q ↔ ∃ i, r = c i
hr : r ∣ q
hq : q ≠ 0
i : ℕ := (normalizedFactors r).card
hi : normalizedFactors r = Multiset.replicate i (c 1)
H : r = c 1 ^ i
this : (Finset.image (fun m ↦ c 1 ^ ↑m) Finset.univ).card = i + 1
a : Fin (i + 1)
left✝ : a ∈ Finset.univ
⊢ ↑a ≤ i
Module: Mathlib.RingTheory.FractionalIdeal.Basic

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
S : Submonoid R
P : Type u_2
inst✝¹ : CommRing P
inst✝ : Algebra R P
I J : FractionalIdeal S P
x : P
⊢ x ∈ ↑(I + J) ↔ ∃ i ∈ I, ∃ j ∈ J, i + j = x

Tactic:
coe_add,

Goal state after:
R : Type u_1
inst✝² : CommRing R
S : Submonoid R
P : Type u_2
inst✝¹ : CommRing P
inst✝ : Algebra R P
I J : FractionalIdeal S P
x : P
⊢ x ∈ ↑I + ↑J ↔ ∃ i ∈ I, ∃ j ∈ J, i + j = x
Module: Mathlib.RingTheory.ChainOfDivisors

Goal state before:
pp: M : Type u_1
inst✝⁴ : CommMonoidWithZero M
inst✝³ : IsCancelMulZero M
N : Type u_2
inst✝² : CommMonoidWithZero N
inst✝¹ : UniqueFactorizationMonoid N
inst✝ : UniqueFactorizationMonoid M
m p : Associates M
n : Associates N
hn : n ≠ 0
hp : p ∈ normalizedFactors m
d : ↑(Set.Iic m) ≃o ↑(Set.Iic n)
b : Associates N
this✝² : b ≤ n
x : ↑(Set.Iic m)
hb : ↑(d x) < ↑(d ⟨p, ⋯⟩)
hx : d x = ⟨b, this✝²⟩
this✝¹ : OrderBot { l // l ≤ m } := Subtype.orderBot ⋯
this✝ : OrderBot { l // l ≤ n } := Subtype.orderBot ⋯
this : x = ⊥
⊢ b = ⊥

Tactic:
this,

Goal state after:
M : Type u_1
inst✝⁴ : CommMonoidWithZero M
inst✝³ : IsCancelMulZero M
N : Type u_2
inst✝² : CommMonoidWithZero N
inst✝¹ : UniqueFactorizationMonoid N
inst✝ : UniqueFactorizationMonoid M
m p : Associates M
n : Associates N
hn : n ≠ 0
hp : p ∈ normalizedFactors m
d : ↑(Set.Iic m) ≃o ↑(Set.Iic n)
b : Associates N
this✝² : b ≤ n
x : ↑(Set.Iic m)
hb : ↑(d x) < ↑(d ⟨p, ⋯⟩)
hx : d ⊥ = ⟨b, this✝²⟩
this✝¹ : OrderBot { l // l ≤ m } := Subtype.orderBot ⋯
this✝ : OrderBot { l // l ≤ n } := Subtype.orderBot ⋯
this : x = ⊥
⊢ b = ⊥
Module: Mathlib.LinearAlgebra.Matrix.Cartan

Goal state before:
pp: case mp
ι : Type u_1
inst✝ : LinearOrder ι
A : Matrix ι ι ℤ
hA : A.IsSymm
h : A.IsSimplyLaced
i j : ι
hij : j < i
⊢ A i j = 0 ∨ A i j = -1

Tactic:
exact h hij.ne'

Goal state after:
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Basic

Goal state before:
pp: A : Type u_2
inst✝¹ : CommRing A
inst✝ : IsDedekindDomain A
hNF : ¬IsField A
I : Ideal A
hI0 : I ≠ ⊥
Z₀ : Multiset (PrimeSpectrum A)
hZ₀ : (Multiset.map asIdeal Z₀).prod ≤ I ∧ (Multiset.map asIdeal Z₀).prod ≠ ⊥
Z : Multiset (PrimeSpectrum A)
h_eraseZ : ∀ x ∈ {Z | (Multiset.map asIdeal Z).prod ≤ I ∧ (Multiset.map asIdeal Z).prod ≠ ⊥}, ¬x < Z
hZI : (Multiset.map asIdeal Z).prod ≤ I
hprodZ : (Multiset.map asIdeal Z).prod ≠ ⊥
P : PrimeSpectrum A
hPZ : P ∈ Z
hPZ' : P.asIdeal ∈ Multiset.map asIdeal Z
this : Multiset.map asIdeal (Z.erase P) = (Multiset.map asIdeal Z).erase P.asIdeal
hP0 : P.asIdeal ≠ ⊥
hZP0 : (Multiset.map asIdeal (Z.erase P)).prod ≠ ⊥
hIM : I ≤ P.asIdeal
hM : P.asIdeal.IsMaximal
hPM : P.asIdeal ≤ P.asIdeal
⊢ P.asIdeal ::ₘ Multiset.map asIdeal (Z.erase P) = Multiset.map asIdeal Z

Tactic:
this,

Goal state after:
A : Type u_2
inst✝¹ : CommRing A
inst✝ : IsDedekindDomain A
hNF : ¬IsField A
I : Ideal A
hI0 : I ≠ ⊥
Z₀ : Multiset (PrimeSpectrum A)
hZ₀ : (Multiset.map asIdeal Z₀).prod ≤ I ∧ (Multiset.map asIdeal Z₀).prod ≠ ⊥
Z : Multiset (PrimeSpectrum A)
h_eraseZ : ∀ x ∈ {Z | (Multiset.map asIdeal Z).prod ≤ I ∧ (Multiset.map asIdeal Z).prod ≠ ⊥}, ¬x < Z
hZI : (Multiset.map asIdeal Z).prod ≤ I
hprodZ : (Multiset.map asIdeal Z).prod ≠ ⊥
P : PrimeSpectrum A
hPZ : P ∈ Z
hPZ' : P.asIdeal ∈ Multiset.map asIdeal Z
this : Multiset.map asIdeal (Z.erase P) = (Multiset.map asIdeal Z).erase P.asIdeal
hP0 : P.asIdeal ≠ ⊥
hZP0 : (Multiset.map asIdeal (Z.erase P)).prod ≠ ⊥
hIM : I ≤ P.asIdeal
hM : P.asIdeal.IsMaximal
hPM : P.asIdeal ≤ P.asIdeal
⊢ P.asIdeal ::ₘ (Multiset.map asIdeal Z).erase P.asIdeal = Multiset.map asIdeal Z
Module: Mathlib.Algebra.Lie.Weights.IsSimple

Goal state before:
pp: case refine_2
K : Type u_1
L : Type u_2
inst✝⁷ : Field K
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra K L
inst✝⁴ : FiniteDimensional K L
H : LieSubalgebra K L
inst✝³ : H.IsCartanSubalgebra
inst✝² : CharZero K
inst✝¹ : IsKilling K L
inst✝ : IsTriangularizable K (↥H) L
I : LieIdeal K L
α : ↥LieSubalgebra.root
hα : α ∈ I.rootSet
⊢ genWeightSpace L (-⇑↑α) ≤ LieSubmodule.restr I H

pp: case refine_3
K : Type u_1
L : Type u_2
inst✝⁷ : Field K
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra K L
inst✝⁴ : FiniteDimensional K L
H : LieSubalgebra K L
inst✝³ : H.IsCartanSubalgebra
inst✝² : CharZero K
inst✝¹ : IsKilling K L
inst✝ : IsTriangularizable K (↥H) L
I : LieIdeal K L
α : ↥LieSubalgebra.root
hα : α ∈ I.rootSet
⊢ corootSubmodule ↑α ≤ LieSubmodule.restr I H

Tactic:
· apply I.rootSpace_le_of_apply_coroot_ne_zero hα
        simp [Pi.neg_apply, root_apply_coroot (H.isNonZero_coe_root α)]

Goal state after:
case refine_3
K : Type u_1
L : Type u_2
inst✝⁷ : Field K
inst✝⁶ : LieRing L
inst✝⁵ : LieAlgebra K L
inst✝⁴ : FiniteDimensional K L
H : LieSubalgebra K L
inst✝³ : H.IsCartanSubalgebra
inst✝² : CharZero K
inst✝¹ : IsKilling K L
inst✝ : IsTriangularizable K (↥H) L
I : LieIdeal K L
α : ↥LieSubalgebra.root
hα : α ∈ I.rootSet
⊢ corootSubmodule ↑α ≤ LieSubmodule.restr I H
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Basic

Goal state before:
pp: R : Type u_1
A : Type u_2
K✝ : Type u_3
inst✝⁵ : CommRing R
inst✝⁴ : CommRing A
inst✝³ : Field K✝
inst✝² : IsDedekindDomain A
inst✝¹ : Algebra A K✝
inst✝ : IsFractionRing A K✝
I : { x // 0 < x }
J K : Ideal A
e : (fun x1 x2 ↦ x1 ≤ x2) ((fun x y ↦ ↑x * y) I J) ((fun x y ↦ ↑x * y) I K)
⊢ ↑↑I * ↑J ≤ ↑↑I * ↑K

Tactic:
← FractionalIdeal.coeIdeal_mul,

Goal state after:
R : Type u_1
A : Type u_2
K✝ : Type u_3
inst✝⁵ : CommRing R
inst✝⁴ : CommRing A
inst✝³ : Field K✝
inst✝² : IsDedekindDomain A
inst✝¹ : Algebra A K✝
inst✝ : IsFractionRing A K✝
I : { x // 0 < x }
J K : Ideal A
e : (fun x1 x2 ↦ x1 ≤ x2) ((fun x y ↦ ↑x * y) I J) ((fun x y ↦ ↑x * y) I K)
⊢ ↑(↑I * J) ≤ ↑↑I * ↑K
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Basic

Goal state before:
pp: R : Type u_1
A : Type u_2
K✝ : Type u_3
inst✝⁵ : CommRing R
inst✝⁴ : CommRing A
inst✝³ : Field K✝
inst✝² : IsDedekindDomain A
inst✝¹ : Algebra A K✝
inst✝ : IsFractionRing A K✝
I : { x // 0 < x }
J K : Ideal A
e : (fun x1 x2 ↦ x1 ≤ x2) ((fun x y ↦ ↑x * y) I J) ((fun x y ↦ ↑x * y) I K)
⊢ ↑(↑I * J) ≤ ↑↑I * ↑K

Tactic:
← FractionalIdeal.coeIdeal_mul,

Goal state after:
R : Type u_1
A : Type u_2
K✝ : Type u_3
inst✝⁵ : CommRing R
inst✝⁴ : CommRing A
inst✝³ : Field K✝
inst✝² : IsDedekindDomain A
inst✝¹ : Algebra A K✝
inst✝ : IsFractionRing A K✝
I : { x // 0 < x }
J K : Ideal A
e : (fun x1 x2 ↦ x1 ≤ x2) ((fun x y ↦ ↑x * y) I J) ((fun x y ↦ ↑x * y) I K)
⊢ ↑(↑I * J) ≤ ↑(↑I * K)
Module: Mathlib.Algebra.Module.DedekindDomain

Goal state before:
pp: R : Type u
inst✝³ : CommRing R
inst✝² : IsDedekindDomain R
M : Type v
inst✝¹ : AddCommGroup M
inst✝ : Module R M
I : Ideal R
hI : I ≠ ⊥
hM : Module.IsTorsionBySet R M ↑I
P : Multiset (Ideal R) := factors I
prime_of_mem : ∀ p ∈ P.toFinset, Prime p
p : Ideal R
hp : p ∈ ↑(factors I).toFinset
q : Ideal R
hq : q ∈ ↑(factors I).toFinset
pq : p ≠ q
this : Multiset.count p (normalizedFactors ?m.252) = 0
⊢ p ^ min (Multiset.count p (normalizedFactors (q ^ Multiset.count q P))) (Multiset.count p P) = ⊤

Tactic:
this,

Goal state after:
R : Type u
inst✝³ : CommRing R
inst✝² : IsDedekindDomain R
M : Type v
inst✝¹ : AddCommGroup M
inst✝ : Module R M
I : Ideal R
hI : I ≠ ⊥
hM : Module.IsTorsionBySet R M ↑I
P : Multiset (Ideal R) := factors I
prime_of_mem : ∀ p ∈ P.toFinset, Prime p
p : Ideal R
hp : p ∈ ↑(factors I).toFinset
q : Ideal R
hq : q ∈ ↑(factors I).toFinset
pq : p ≠ q
this : Multiset.count p (normalizedFactors (q ^ Multiset.count q P)) = 0
⊢ p ^ min 0 (Multiset.count p P) = ⊤
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Lemmas

Goal state before:
pp: A : Type u_2
inst✝¹ : CommRing A
inst✝ : IsDedekindDomain A
p I : Ideal A
hI : I ≠ ⊥
⊢ p ∈ normalizedFactors I ↔ p.IsPrime ∧ I ≤ p

Tactic:
rw [← dvd_iff_le]
  by_cases hp : p = 0
  · rw [← zero_eq_bot] at hI
    simp only [hp, zero_notMem_normalizedFactors, zero_dvd_iff, hI, false_iff, not_and,
      not_false_eq_true, implies_true]
  · rwa [mem_normalizedFactors_iff hI, prime_iff_isPrime]

Goal state after:
Module: Mathlib.RingTheory.FractionalIdeal.Operations

Goal state before:
pp: case mpr
R : Type u_5
S : Type u_6
K : Type u_7
L : Type u_8
inst✝⁹ : CommRing R
inst✝⁸ : IsDomain R
inst✝⁷ : CommRing S
inst✝⁶ : IsDomain S
inst✝⁵ : CommRing K
inst✝⁴ : CommRing L
inst✝³ : Algebra R K
inst✝² : Algebra S L
inst✝¹ : IsFractionRing R K
inst✝ : IsFractionRing S L
f : R ≃+* S
x : K
y : L
⊢ (∃ a, a • (IsLocalization.map L ↑f ⋯) x = y) → ∃ a, (semilinearEquivOfRingEquiv K L f) (a • x) = y

Tactic:
· rintro ⟨s, rfl⟩
    use f.symm s
    simp only [Algebra.smul_def, semilinearEquivOfRingEquiv_apply, map_mul, map_eq, RingHom.coe_coe,
      IsFractionRing.ringEquivOfRingEquiv_apply, RingEquiv.apply_symm_apply]

Goal state after:
Module: Mathlib.Algebra.Module.GradedModule

Goal state before:
pp: ιA : Type u_1
ιB : Type u_2
A : ιA → Type u_3
M : ιB → Type u_4
inst✝⁷ : AddMonoid ιA
inst✝⁶ : VAdd ιA ιB
inst✝⁵ : (i : ιA) → AddCommMonoid (A i)
inst✝⁴ : (i : ιB) → AddCommMonoid (M i)
inst✝³ : DecidableEq ιA
inst✝² : DecidableEq ιB
inst✝¹ : GSemiring A
inst✝ : Gmodule A M
a b : ⨁ (i : ιA), A i
c : ⨁ (i : ιB), M i
⊢ (a * b) • c = a • b • c

Tactic:
suffices
    (-- `fun a b c ↦ (a * b) • c` as a bundled hom
              smulAddMonoidHom
              A M).compHom.comp
        (DirectSum.mulHom A) =
      (AddMonoidHom.compHom AddMonoidHom.flipHom <|
          (smulAddMonoidHom A M).flip.compHom.comp <| smulAddMonoidHom A M).flip
    from -- `fun a b c ↦ a • (b • c)` as a bundled hom
      DFunLike.congr_fun (DFunLike.congr_fun (DFunLike.congr_fun this a) b) c

Goal state after:
ιA : Type u_1
ιB : Type u_2
A : ιA → Type u_3
M : ιB → Type u_4
inst✝⁷ : AddMonoid ιA
inst✝⁶ : VAdd ιA ιB
inst✝⁵ : (i : ιA) → AddCommMonoid (A i)
inst✝⁴ : (i : ιB) → AddCommMonoid (M i)
inst✝³ : DecidableEq ιA
inst✝² : DecidableEq ιB
inst✝¹ : GSemiring A
inst✝ : Gmodule A M
a b : ⨁ (i : ιA), A i
c : ⨁ (i : ιB), M i
⊢ (compHom (smulAddMonoidHom A M)).comp (mulHom A) =
    ((compHom flipHom) ((compHom (smulAddMonoidHom A M).flip).comp (smulAddMonoidHom A M))).flip
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Lemmas

Goal state before:
pp: T : Type u_4
inst✝¹ : CommRing T
inst✝ : IsDedekindDomain T
I J : Ideal T
hI : I ≠ ⊥
hJ : Irreducible J
n : ℕ
hn : emultiplicity J I ≤ ↑n
⊢ J ^ count J (normalizedFactors I) = J ^ multiplicity J I

pp: T : Type u_4
inst✝¹ : CommRing T
inst✝ : IsDedekindDomain T
I J : Ideal T
hI : I ≠ ⊥
hJ : Irreducible J
n : ℕ
hn : emultiplicity J I ≤ ↑n
⊢ count J (normalizedFactors I) ≤ n

Tactic:
· congr
    rw [← Nat.cast_inj (R := ℕ∞), ← FiniteMultiplicity.emultiplicity_eq_multiplicity,
      emultiplicity_eq_count_normalizedFactors hJ hI, normalize_eq J]
    rw [← emultiplicity_lt_top]
    apply hn.trans_lt
    simp

Goal state after:
T : Type u_4
inst✝¹ : CommRing T
inst✝ : IsDedekindDomain T
I J : Ideal T
hI : I ≠ ⊥
hJ : Irreducible J
n : ℕ
hn : emultiplicity J I ≤ ↑n
⊢ count J (normalizedFactors I) ≤ n
Module: Mathlib.RingTheory.DedekindDomain.Ideal.Lemmas

Goal state before:
pp: R : Type u_1
A : Type u_2
K : Type u_3
inst✝³ : CommRing R
inst✝² : CommRing A
inst✝¹ : Field K
inst✝ : IsDedekindDomain A
I : Ideal R
J : Ideal A
f : R ⧸ I →+* A ⧸ J
hf : Function.Surjective ⇑f
X : Ideal R
hX : X ∣ I
Y : Ideal R
hY : Y ∣ I
h : ⟨X, hX⟩ ≤ ⟨Y, hY⟩
⊢ (fun X ↦ ⟨comap (Ideal.Quotient.mk J) (map f (map (Ideal.Quotient.mk I) ↑X)), ⋯⟩) ⟨X, hX⟩ ≤
    (fun X ↦ ⟨comap (Ideal.Quotient.mk J) (map f (map (Ideal.Quotient.mk I) ↑X)), ⋯⟩) ⟨Y, hY⟩

Tactic:
rw [← Subtype.coe_le_coe, Subtype.coe_mk, Subtype.coe_mk] at h ⊢

Goal state after:
R : Type u_1
A : Type u_2
K : Type u_3
inst✝³ : CommRing R
inst✝² : CommRing A
inst✝¹ : Field K
inst✝ : IsDedekindDomain A
I : Ideal R
J : Ideal A
f : R ⧸ I →+* A ⧸ J
hf : Function.Surjective ⇑f
X : Ideal R
hX : X ∣ I
Y : Ideal R
hY : Y ∣ I
h : X ≤ Y
⊢ comap (Ideal.Quotient.mk J) (map f (map (Ideal.Quotient.mk I) X)) ≤
    ↑((fun X ↦ ⟨comap (Ideal.Quotient.mk J) (map f (map (Ideal.Quotient.mk I) ↑X)), ⋯⟩) ⟨Y, hY⟩)
Module: Mathlib.Algebra.Module.FinitePresentation

Goal state before:
pp: R : Type u_1
M : Type u_2
N : Type u_3
inst✝⁶ : Ring R
inst✝⁵ : AddCommGroup M
inst✝⁴ : Module R M
inst✝³ : AddCommGroup N
inst✝² : Module R N
inst✝¹ : Free R M
inst✝ : Module.Finite R M
l : M →ₗ[R] N
hl : Function.Surjective ⇑l
hl' : l.ker.FG
b : Basis (Free.ChooseBasisIndex R M) R M := Free.chooseBasis R M
π : Free.ChooseBasisIndex R M → ↥⋯.toFinset := fun i ↦ ⟨l (b i), ⋯⟩
σ : ↥⋯.toFinset → Free.ChooseBasisIndex R M
hσ : ∀ (b_1 : ↥⋯.toFinset), π (σ b_1) = b_1
hπ : Subtype.val ∘ π = ⇑l ∘ ⇑b
hσ₁ : π ∘ σ = id
⊢ FinitePresentation R N

Tactic:
have hσ₂ : l ∘ b ∘ σ = Subtype.val := by ext i; exact congr_arg Subtype.val (hσ i)

Goal state after:
R : Type u_1
M : Type u_2
N : Type u_3
inst✝⁶ : Ring R
inst✝⁵ : AddCommGroup M
inst✝⁴ : Module R M
inst✝³ : AddCommGroup N
inst✝² : Module R N
inst✝¹ : Free R M
inst✝ : Module.Finite R M
l : M →ₗ[R] N
hl : Function.Surjective ⇑l
hl' : l.ker.FG
b : Basis (Free.ChooseBasisIndex R M) R M := Free.chooseBasis R M
π : Free.ChooseBasisIndex R M → ↥⋯.toFinset := fun i ↦ ⟨l (b i), ⋯⟩
σ : ↥⋯.toFinset → Free.ChooseBasisIndex R M
hσ : ∀ (b_1 : ↥⋯.toFinset), π (σ b_1) = b_1
hπ : Subtype.val ∘ π = ⇑l ∘ ⇑b
hσ₁ : π ∘ σ = id
hσ₂ : ⇑l ∘ ⇑b ∘ σ = Subtype.val
⊢ FinitePresentation R N