mathlib-initiative/mathlib-tactics huggingface dataset:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝ : CommSemiring R
f : σ → MvPolynomial τ R
d : σ →₀ ℕ
r : R
⊢ (bind₁ f) ((monomial d) r) = C r * ∏ i ∈ d.support, f i ^ d i

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
R : Type u_3
S : Type u_4
inst✝¹ : CommSemiring R
inst✝ : CommSemiring S
f : R →+* MvPolynomial σ S
d : σ →₀ ℕ
r : R
⊢ (bind₂ f) ((monomial d) r) = f r * (monomial d) 1

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
i : ι
hi : i ∈ s
⊢ eval (v i) (nodal s v) = 0

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
R : Type u_3
S : Type u_4
inst✝¹ : CommSemiring R
inst✝ : CommSemiring S
f : R →+* MvPolynomial σ S
d : σ →₀ ℕ
⊢ (bind₂ f) ((monomial d) 1) = (monomial d) 1

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
⊢ ((bind₁ f) φ).vars = (∑ x ∈ φ.support, (bind₁ f) ((monomial x) (coeff x φ))).vars

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
⊢ (φ.support.biUnion fun i ↦ ((bind₁ f) ((monomial i) (coeff i φ))).vars) =
    φ.support.biUnion fun d ↦ (C (coeff d φ) * ∏ i ∈ d.support, f i ^ d i).vars

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
inst✝¹ : Nontrivial R
inst✝ : NoZeroDivisors R
x : R
hx : ∀ i ∈ s, x ≠ v i
⊢ eval x (nodal s v) ≠ 0

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
d : σ →₀ ℕ
_hd : d ∈ φ.support
⊢ (C (coeff d φ)).vars ∪ (∏ i ∈ d.support, f i ^ d i).vars ⊆ (∏ i ∈ d.support, f i ^ d i).vars

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝¹ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
inst✝ : DecidableEq ι
i : ι
hi : i ∈ s
⊢ nodal s v = (X - C (v i)) * nodal (s.erase i) v

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.Lie.EngelSubalgebra

Goal state before:
pp: R : Type u_1
L : Type u_2
inst✝³ : CommRing R
inst✝² : LieRing L
inst✝¹ : LieAlgebra R L
inst✝ : IsNoetherian R L
H : LieSubalgebra R L
x : ↥H
K : ℕ →o Submodule R ↥H := { toFun := fun n ↦ LinearMap.ker ((ad R ↥H) x ^ n), monotone' := ⋯ }
n : ℕ
hn : ∀ (m : ℕ), n ≤ m → K n = K m
y : ↥H
m : ℕ
hm : ((ad R L) ↑x ^ m) ↑y = 0
hmn : n ≤ m
⊢ ∀ (k : ℕ), ((ad R L) ↑x ^ k) ↑y = 0 ↔ y ∈ K k

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
i : ι
hi : i ∈ s
⊢ X - C (v i) ∣ nodal s v

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝¹ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
inst✝ : DecidableEq ι
i : ι
hi : i ∉ s
⊢ nodal (insert i s) v = (X - C (v i)) * nodal s v

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: case calc_2
σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
j : τ
⊢ (j ∈ φ.support.biUnion fun d ↦ d.support.biUnion fun i ↦ (f i).vars) → j ∈ φ.vars.biUnion fun i ↦ (f i).vars

Tactic:
simp_rw [Finset.mem_biUnion]

Goal state after:
case calc_2
σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
j : τ
⊢ (∃ a ∈ φ.support, ∃ a_1 ∈ a.support, j ∈ (f a_1).vars) → ∃ a ∈ φ.vars, j ∈ (f a).vars
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝¹ : CommSemiring R
inst✝ : DecidableEq τ
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
⊢ ((bind₁ f) φ).vars ⊆ φ.vars.biUnion fun i ↦ (f i).vars

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
inst✝ : CommSemiring R
f : σ → MvPolynomial τ R
φ : MvPolynomial σ R
j : τ
h : j ∈ ((bind₁ f) φ).vars
⊢ ∃ i ∈ φ.vars, j ∈ (f i).vars

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6}, Functor.mapConst = Functor.map ∘ Function.const β

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α : Type u_6} (x : MvPolynomial α R), id <$> x = x

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β γ : Type u_6} (g : α → β) (h : β → γ) (x : MvPolynomial α R), (h ∘ g) <$> x = h <$> g <$> x

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
α✝ β✝ : Type u_6
x✝¹ : MvPolynomial α✝ R
x✝ : MvPolynomial β✝ R
⊢ x✝¹ <* x✝ = Function.const β✝ <$> x✝¹ <*> x✝

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.Lie.EngelSubalgebra

Goal state before:
pp: R : Type u_1
L : Type u_2
inst✝³ : CommRing R
inst✝² : LieRing L
inst✝¹ : LieAlgebra R L
inst✝ : IsNoetherian R L
H : LieSubalgebra R L
h : ∀ x ∈ H, H ≤ engel R x
⊢ LieRing.IsNilpotent ↥H

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6} (x : MvPolynomial α R) (y : MvPolynomial β R), x *> y = Function.const α id <$> x <*> y

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6} (g : α → β) (x : MvPolynomial α R), pure g <*> x = g <$> x

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6} (f : MvPolynomial (α → β) R) (x : MvPolynomial α R),
    (do
        let x_1 ← f
        x_1 <$> x) =
      f <*> x

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6} (x : α) (f : α → MvPolynomial β R), pure x >>= f = f x

Tactic:
intros; simp [pure, bind]

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β : Type u_6} (x : α) (f : α → MvPolynomial β R), pure x >>= f = f x

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : Module R M
inst✝¹ : Module.Free R M
inst✝ : Module.Finite R M
f : M →ₗ[R] M
t : R
⊢ eval t f.charpoly = LinearMap.det ((algebraMap R (M →ₗ[R] M)) t - f)

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
inst✝ : StrongRankCondition R
⊢ charpoly 0 = X ^ Module.finrank R M

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.MvPolynomial.Monad

Goal state before:
pp: σ : Type u_1
τ : Type u_2
R : Type u_3
S : Type u_4
T : Type u_5
inst✝² : CommSemiring R
inst✝¹ : CommSemiring S
inst✝ : CommSemiring T
f : σ → MvPolynomial τ R
⊢ ∀ {α β γ : Type u_6} (x : MvPolynomial α R) (f : α → MvPolynomial β R) (g : β → MvPolynomial γ R),
    x >>= f >>= g = x >>= fun x ↦ f x >>= g

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
inst✝ : StrongRankCondition R
⊢ charpoly 1 = (X - 1) ^ Module.finrank R M

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝¹ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
inst✝ : DecidableEq ι
⊢ derivative (nodal s v) = ∑ i ∈ s, nodal (s.erase i) v

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : Module R M
inst✝¹ : Module.Free R M
inst✝ : Module.Finite R M
f : Module.End R M
μ : R
⊢ charpoly (f - μ • 1) = (charpoly f).comp (X + C μ)

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.Lie.CartanCriterion

Goal state before:
pp: L : Type u_2
M : Type u_3
inst✝⁹ : LieRing L
inst✝⁸ : AddCommGroup M
inst✝⁷ : LieRingModule L M
K : Type u_4
inst✝⁶ : Field K
inst✝⁵ : CharZero K
inst✝⁴ : IsAlgClosed K
inst✝³ : LieAlgebra K L
inst✝² : Module K M
inst✝¹ : LieModule K L M
inst✝ : FiniteDimensional K M
h : traceForm K L M = 0
φ : L →ₗ⁅K⁆ End K M := toEnd K L M
x : L
hx : x ∈ derivedSeries K L 1
n : End K M
hn_adj : n ∈ K[φ x]
s : End K M
hn_nil : _root_.IsNilpotent n
hs_ss : s.IsSemisimple
hX_ns : φ x = n + s
hns : Commute n s
eigenDecomp : DirectSum.IsInternal s.eigenspace :=
  DirectSum.isInternal_submodule_of_iSupIndep_of_iSup_eq_top (eigenspaces_iSupIndep s)
    (IsSemisimple.iSup_eigenspace_eq_top hs_ss)
I : Type (max u_4 0) := (ν : K) × Fin (finrank K ↥(s.eigenspace ν))
v : Basis I K M := eigenDecomp.collectedBasis fun μ ↦ finBasis K ↥(s.eigenspace μ)
this : Fintype I
μ : I → K := Sigma.fst
hsv : ∀ (i : I), s (v i) = μ i • v i
E : Submodule ℚ K := Submodule.span ℚ (Set.range μ)
hμ : ∀ (i : I), μ i ∈ E
f : Dual ℚ ↥E
fμ : I → K := fun i ↦ ↑(f ⟨μ i, ⋯⟩)
y : End K M := (Matrix.toLin v v) (Matrix.diagonal fμ)
hyv : ∀ (i : I), y (v i) = fμ i • v i
z : End K M
hz : z ∈ φ.range
⊢ ∃ r, (aeval ((ad K (End K M)) s)) r = (ad K (End K M)) y

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝¹ : CommRing R
ι : Type u_2
s : Finset ι
v : ι → R
inst✝ : DecidableEq ι
i : ι
hi : i ∈ s
⊢ eval (v i) (derivative (nodal s v)) = eval (v i) (nodal (s.erase i) v)

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
inst✝¹ : IsDomain R
G : Subgroup Rˣ
inst✝ : Fintype ↥G
⊢ degree 1 < (X ^ Fintype.card ↥G).degree

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Free R M
inst✝¹ : Module.Finite R M
f : M →ₗ[R] M
inst✝ : StrongRankCondition R
⊢ f.charpoly.natDegree = finrank R M

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.ToMatrix

Goal state before:
pp: R : Type u_1
M : Type u_2
inst✝⁶ : CommRing R
inst✝⁵ : AddCommGroup M
inst✝⁴ : Module R M
inst✝³ : Free R M
inst✝² : Module.Finite R M
f : M →ₗ[R] M
ι : Type w
inst✝¹ : DecidableEq ι
inst✝ : Fintype ι
b : Basis ι R M
a✝ : Nontrivial R
b' : Basis (ChooseBasisIndex R M) R M := chooseBasis R M
P : Matrix ι (ChooseBasisIndex R M) R := b.toMatrix ⇑b'
A : Matrix (ChooseBasisIndex R M) (ChooseBasisIndex R M) R := (toMatrix b' b') f
Q : Matrix (ChooseBasisIndex R M) ι R := b'.toMatrix ⇑b
e : ι ≃ ChooseBasisIndex R M := b.indexEquiv b'
ι' : Type u_2 := ChooseBasisIndex R M
φ : Matrix ι ι R ≃ₗ[R] Matrix (ChooseBasisIndex R M) (ChooseBasisIndex R M) R := reindexLinearEquiv R R e e
φ₁ : Matrix ι ι' R ≃ₗ[R] Matrix (ChooseBasisIndex R M) ι' R := reindexLinearEquiv R R e (Equiv.refl ι')
φ₂ : Matrix ι' ι' R ≃ₗ[R] Matrix ι' ι' R := reindexLinearEquiv R R (Equiv.refl ι') (Equiv.refl ι')
φ₃ : Matrix ι' ι R ≃ₗ[R] Matrix ι' (ChooseBasisIndex R M) R := reindexLinearEquiv R R (Equiv.refl ι') e
⊢ (φ (P * A * Q)).charpoly = (φ₁ P * φ₂ A * φ₃ Q).charpoly

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : Module R M
inst✝¹ : Module.Free R M
inst✝ : Module.Finite R M
f : M →ₗ[R] M
⊢ (aeval f) f.charpoly = 0

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁴ : CommRing R
inst✝³ : AddCommGroup M
inst✝² : Module R M
inst✝¹ : Module.Free R M
inst✝ : Module.Finite R M
f : M →ₗ[R] M
k : ℕ
⊢ f ^ k = (aeval f) (X ^ k %ₘ f.charpoly)

Tactic:
by

Goal state after:
Module: Mathlib.Algebra.Lie.CartanCriterion

Goal state before:
pp: L : Type u_2
M : Type u_3
inst✝⁹ : LieRing L
inst✝⁸ : AddCommGroup M
inst✝⁷ : LieRingModule L M
K : Type u_4
inst✝⁶ : Field K
inst✝⁵ : CharZero K
inst✝⁴ : IsAlgClosed K
inst✝³ : LieAlgebra K L
inst✝² : Module K M
inst✝¹ : LieModule K L M
inst✝ : FiniteDimensional K M
h : traceForm K L M = 0
φ : L →ₗ⁅K⁆ End K M := toEnd K L M
x : L
hx : x ∈ derivedSeries K L 1
n : End K M
hn_adj : n ∈ K[φ x]
s : End K M
hn_nil : _root_.IsNilpotent n
hs_ss : s.IsSemisimple
hX_ns : φ x = n + s
hns : Commute n s
eigenDecomp : DirectSum.IsInternal s.eigenspace :=
  DirectSum.isInternal_submodule_of_iSupIndep_of_iSup_eq_top (eigenspaces_iSupIndep s)
    (IsSemisimple.iSup_eigenspace_eq_top hs_ss)
I : Type (max u_4 0) := (ν : K) × Fin (finrank K ↥(s.eigenspace ν))
v : Basis I K M := eigenDecomp.collectedBasis fun μ ↦ finBasis K ↥(s.eigenspace μ)
this : Fintype I
μ : I → K := Sigma.fst
hsv : ∀ (i : I), s (v i) = μ i • v i
E : Submodule ℚ K := Submodule.span ℚ (Set.range μ)
hμ : ∀ (i : I), μ i ∈ E
f : Dual ℚ ↥E
fμ : I → K := fun i ↦ ↑(f ⟨μ i, ⋯⟩)
y : End K M := (Matrix.toLin v v) (Matrix.diagonal fμ)
hyv : ∀ (i : I), y (v i) = fμ i • v i
z : End K M
hz : z ∈ φ.range
r : K[X]
hr : (aeval ((ad K (End K M)) s)) r = (ad K (End K M)) y
⊢ (ad K (End K M)) s ∈ K[(ad K (End K M)) (φ x)]

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
f : M →ₗ[R] M
inst✝ : Nontrivial R
hf : Function.Injective ⇑f
h : (minpoly R f).coeff 0 = 0
P : R[X]
hP : minpoly R f = X * P
⊢ P.degree < (minpoly R f).degree

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.ToMatrix

Goal state before:
pp: R : Type u_1
M : Type u_2
inst✝⁶ : CommRing R
inst✝⁵ : AddCommGroup M
inst✝⁴ : Module R M
inst✝³ : Free R M
inst✝² : Module.Finite R M
f : M →ₗ[R] M
ι : Type w
inst✝¹ : DecidableEq ι
inst✝ : Fintype ι
b : Basis ι R M
a✝ : Nontrivial R
b' : Basis (ChooseBasisIndex R M) R M := chooseBasis R M
P : Matrix ι (ChooseBasisIndex R M) R := b.toMatrix ⇑b'
A : Matrix (ChooseBasisIndex R M) (ChooseBasisIndex R M) R := (toMatrix b' b') f
Q : Matrix (ChooseBasisIndex R M) ι R := b'.toMatrix ⇑b
e : ι ≃ ChooseBasisIndex R M := b.indexEquiv b'
ι' : Type u_2 := ChooseBasisIndex R M
φ : Matrix ι ι R ≃ₗ[R] Matrix (ChooseBasisIndex R M) (ChooseBasisIndex R M) R := reindexLinearEquiv R R e e
φ₁ : Matrix ι ι' R ≃ₗ[R] Matrix (ChooseBasisIndex R M) ι' R := reindexLinearEquiv R R e (Equiv.refl ι')
φ₂ : Matrix ι' ι' R ≃ₗ[R] Matrix ι' ι' R := reindexLinearEquiv R R (Equiv.refl ι') (Equiv.refl ι')
φ₃ : Matrix ι' ι R ≃ₗ[R] Matrix ι' (ChooseBasisIndex R M) R := reindexLinearEquiv R R (Equiv.refl ι') e
⊢ (φ₁ P * φ₂ A * φ₃ Q).charpoly = A.charpoly

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.ToMatrix

Goal state before:
pp: R : Type u_1
M : Type u_2
inst✝⁶ : CommRing R
inst✝⁵ : AddCommGroup M
inst✝⁴ : Module R M
inst✝³ : Free R M
inst✝² : Module.Finite R M
f : M →ₗ[R] M
ι : Type w
inst✝¹ : DecidableEq ι
inst✝ : Fintype ι
b : Basis ι R M
⊢ ((toMatrix b b) f).charpoly = f.charpoly

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
f : M →ₗ[R] M
inst✝ : Nontrivial R
hf : Function.Injective ⇑f
h : (minpoly R f).coeff 0 = 0
P : R[X]
hP : minpoly R f = X * P
hdegP : P.degree < (minpoly R f).degree
this : (minpoly R f).Monic
⊢ P.Monic

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
f : M →ₗ[R] M
inst✝ : Nontrivial R
hf : Function.Injective ⇑f
h : (minpoly R f).coeff 0 = 0
P : R[X]
hP : minpoly R f = X * P
hdegP : P.degree < (minpoly R f).degree
⊢ P.Monic

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
inst✝¹ : IsDomain R
G : Subgroup Rˣ
inst✝ : Fintype ↥G
h : degree 1 < (X ^ Fintype.card ↥G).degree
i : Rˣ
hi : i ∈ (↑G).toFinset
⊢ i ∈ G

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: R : Type u_1
inst✝² : CommRing R
inst✝¹ : IsDomain R
G : Subgroup Rˣ
inst✝ : Fintype ↥G
⊢ nodal (↑G).toFinset Units.val = X ^ Fintype.card ↥G - 1

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: F : Type u_1
inst✝¹ : Field F
ι : Type u_2
inst✝ : DecidableEq ι
s : Finset ι
v : ι → F
i : ι
⊢ nodalWeight s v i = (eval (v i) (nodal (s.erase i) v))⁻¹

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.ToMatrix

Goal state before:
pp: R : Type u_1
M₁ : Type u_3
M₂ : Type u_4
inst✝⁸ : CommRing R
inst✝⁷ : AddCommGroup M₁
inst✝⁶ : Module R M₁
inst✝⁵ : Module.Finite R M₁
inst✝⁴ : Free R M₁
inst✝³ : AddCommGroup M₂
inst✝² : Module R M₂
inst✝¹ : Module.Finite R M₂
inst✝ : Free R M₂
f₁ : M₁ →ₗ[R] M₁
f₂ : M₂ →ₗ[R] M₂
⊢ (f₁.prodMap f₂).charpoly = f₁.charpoly * f₂.charpoly

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u
M : Type v
inst✝⁵ : CommRing R
inst✝⁴ : AddCommGroup M
inst✝³ : Module R M
inst✝² : Module.Free R M
inst✝¹ : Module.Finite R M
f : M →ₗ[R] M
inst✝ : Nontrivial R
hf : Function.Injective ⇑f
⊢ (minpoly R f).coeff 0 ≠ 0

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: F : Type u_1
inst✝¹ : Field F
ι : Type u_2
inst✝ : DecidableEq ι
s : Finset ι
v : ι → F
i : ι
hi : i ∈ s
⊢ nodal (s.erase i) v = nodal s v / (X - C (v i))

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Charpoly.Basic

Goal state before:
pp: R : Type u_2
M : Type u_1
inst✝⁴ : CommRing R
inst✝³ : Ring M
inst✝² : Algebra R M
inst✝¹ : Module.Finite R M
inst✝ : Module.Free R M
α : M
⊢ (lmul R M) ((aeval α) (LinearMap.charpoly ((lmul R M) α))) = (lmul R M) 0

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: F : Type u_1
inst✝¹ : Field F
ι : Type u_2
inst✝ : DecidableEq ι
s : Finset ι
v : ι → F
i : ι
hi : i ∈ s
⊢ nodalWeight s v i = (eval (v i) (derivative (nodal s v)))⁻¹

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: F : Type u_1
inst✝¹ : Field F
ι : Type u_2
inst✝ : DecidableEq ι
s : Finset ι
v : ι → F
i : ι
hi : i ∈ s
⊢ nodalWeight s v i = (eval (v i) (derivative (nodal s v)))⁻¹

Tactic:
by
  rw [eval_nodal_derivative_eval_node_eq hi, nodalWeight_eq_eval_nodal_erase_inv]

Goal state after:
Module: Mathlib.Algebra.Lie.CartanCriterion

Goal state before:
pp: L : Type u_2
M : Type u_3
inst✝⁹ : LieRing L
inst✝⁸ : AddCommGroup M
inst✝⁷ : LieRingModule L M
K : Type u_4
inst✝⁶ : Field K
inst✝⁵ : CharZero K
inst✝⁴ : IsAlgClosed K
inst✝³ : LieAlgebra K L
inst✝² : Module K M
inst✝¹ : LieModule K L M
inst✝ : FiniteDimensional K M
h : traceForm K L M = 0
φ : L →ₗ⁅K⁆ End K M := toEnd K L M
x : L
hx : x ∈ derivedSeries K L 1
n : End K M
hn_adj : n ∈ K[φ x]
s : End K M
hn_nil : _root_.IsNilpotent n
hs_ss : s.IsSemisimple
hX_ns : φ x = n + s
hns : Commute n s
eigenDecomp : DirectSum.IsInternal s.eigenspace :=
  DirectSum.isInternal_submodule_of_iSupIndep_of_iSup_eq_top (eigenspaces_iSupIndep s)
    (IsSemisimple.iSup_eigenspace_eq_top hs_ss)
I : Type (max u_4 0) := (ν : K) × Fin (finrank K ↥(s.eigenspace ν))
v : Basis I K M := eigenDecomp.collectedBasis fun μ ↦ finBasis K ↥(s.eigenspace μ)
this : Fintype I
μ : I → K := Sigma.fst
hsv : ∀ (i : I), s (v i) = μ i • v i
E : Submodule ℚ K := Submodule.span ℚ (Set.range μ)
hμ : ∀ (i : I), μ i ∈ E
f : Dual ℚ ↥E
fμ : I → K := fun i ↦ ↑(f ⟨μ i, ⋯⟩)
y : End K M := (Matrix.toLin v v) (Matrix.diagonal fμ)
hyv : ∀ (i : I), y (v i) = fμ i • v i
z : End K M
hz : z ∈ φ.range
r : K[X]
hr : (aeval ((ad K (End K M)) s)) r = (ad K (End K M)) y
p : K[X]
hp : (aeval ((ad K (End K M)) (φ x))) p = (ad K (End K M)) s
⊢ (aeval ((ad K (End K M)) (φ x))) (r.comp p) = (ad K (End K M)) y

Tactic:
by

Goal state after:
Module: Mathlib.RingTheory.GradedAlgebra.Homogeneous.Submodule

Goal state before:
pp: ιA : Type u_1
ιM : Type u_2
σA : Type u_3
σM : Type u_4
A : Type u_5
M : Type u_6
inst✝¹³ : Semiring A
inst✝¹² : AddCommMonoid M
inst✝¹¹ : Module A M
𝒜 : ιA → σA
ℳ : ιM → σM
inst✝¹⁰ : DecidableEq ιA
inst✝⁹ : AddMonoid ιA
inst✝⁸ : SetLike σA A
inst✝⁷ : AddSubmonoidClass σA A
inst✝⁶ : GradedRing 𝒜
inst✝⁵ : DecidableEq ιM
inst✝⁴ : SetLike σM M
inst✝³ : AddSubmonoidClass σM M
inst✝² : Decomposition ℳ
inst✝¹ : VAdd ιA ιM
inst✝ : GradedSMul 𝒜 ℳ
⊢ Function.Injective fun X ↦ ↑X.toSubmodule

Tactic:
by

Goal state after:
Module: Mathlib.RingTheory.GradedAlgebra.Homogeneous.Submodule

Goal state before:
pp: ιA : Type u_1
ιM : Type u_2
σA : Type u_3
σM : Type u_4
A : Type u_5
M : Type u_6
inst✝¹³ : Semiring A
inst✝¹² : AddCommMonoid M
inst✝¹¹ : Module A M
𝒜 : ιA → σA
ℳ : ιM → σM
inst✝¹⁰ : DecidableEq ιA
inst✝⁹ : AddMonoid ιA
inst✝⁸ : SetLike σA A
inst✝⁷ : AddSubmonoidClass σA A
inst✝⁶ : GradedRing 𝒜
inst✝⁵ : DecidableEq ιM
inst✝⁴ : SetLike σM M
inst✝³ : AddSubmonoidClass σM M
inst✝² : Decomposition ℳ
inst✝¹ : VAdd ιA ιM
inst✝ : GradedSMul 𝒜 ℳ
⊢ ∀ {s : HomogeneousSubmodule 𝒜 ℳ} (r : A) {m : M}, m ∈ s → r • m ∈ s

Tactic:
by

Goal state after:
Module: Mathlib.RingTheory.GradedAlgebra.Homogeneous.Submodule

Goal state before:
pp: ιA : Type u_1
ιM : Type u_2
σA : Type u_3
σM : Type u_4
A : Type u_5
M : Type u_6
inst✝¹³ : Semiring A
inst✝¹² : AddCommMonoid M
inst✝¹¹ : Module A M
𝒜 : ιA → σA
ℳ : ιM → σM
inst✝¹⁰ : DecidableEq ιA
inst✝⁹ : AddMonoid ιA
inst✝⁸ : SetLike σA A
inst✝⁷ : AddSubmonoidClass σA A
inst✝⁶ : GradedRing 𝒜
inst✝⁵ : DecidableEq ιM
inst✝⁴ : SetLike σM M
inst✝³ : AddSubmonoidClass σM M
inst✝² : Decomposition ℳ
inst✝¹ : VAdd ιA ιM
inst✝ : GradedSMul 𝒜 ℳ
x✝¹ x✝ : HomogeneousSubmodule 𝒜 ℳ
x : Submodule A M
hx : x.IsHomogeneous ℳ
y : Submodule A M
hy : y.IsHomogeneous ℳ
h : x = y
⊢ { toSubmodule := x, is_homogeneous' := hx } = { toSubmodule := y, is_homogeneous' := hy }

Tactic:
by

Goal state after:
Module: Mathlib.LinearAlgebra.Lagrange

Goal state before:
pp: F : Type u_1
inst✝¹ : Field F
ι : Type u_2
inst✝ : DecidableEq ι
s : Finset ι
v : ι → F
i : ι
hvs : Set.InjOn v ↑s
hi : i ∈ s
⊢ nodalWeight s v i ≠ 0

Tactic:
by

Goal state after: