Group structures on the multiplicative and additive opposites

Additive structures on αᵐᵒᵖ

instance AddOpposite.natCast (α : Type u) [NatCast α] : NatCast αᵃᵒᵖ

Equations

• AddOpposite.natCast α = { natCast := fun (n : ℕ) => AddOpposite.op ↑n }

instance MulOpposite.natCast (α : Type u) [NatCast α] : NatCast αᵐᵒᵖ

Equations

• MulOpposite.natCast α = { natCast := fun (n : ℕ) => MulOpposite.op ↑n }

instance AddOpposite.intCast (α : Type u) [IntCast α] : IntCast αᵃᵒᵖ

Equations

• AddOpposite.intCast α = { intCast := fun (n : ℤ) => AddOpposite.op ↑n }

instance MulOpposite.intCast (α : Type u) [IntCast α] : IntCast αᵐᵒᵖ

Equations

• MulOpposite.intCast α = { intCast := fun (n : ℤ) => MulOpposite.op ↑n }

instance MulOpposite.addSemigroup (α : Type u) [AddSemigroup α] : AddSemigroup αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance MulOpposite.addLeftCancelSemigroup (α : Type u) [AddLeftCancelSemigroup α] : AddLeftCancelSemigroup αᵐᵒᵖ

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instance MulOpposite.addRightCancelSemigroup (α : Type u) [AddRightCancelSemigroup α] : AddRightCancelSemigroup αᵐᵒᵖ

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instance MulOpposite.addCommSemigroup (α : Type u) [AddCommSemigroup α] : AddCommSemigroup αᵐᵒᵖ

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• One or more equations did not get rendered due to their size.

instance MulOpposite.addZeroClass (α : Type u) [AddZeroClass α] : AddZeroClass αᵐᵒᵖ

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instance MulOpposite.addMonoid (α : Type u) [AddMonoid α] : AddMonoid αᵐᵒᵖ

Equations

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instance MulOpposite.addCommMonoid (α : Type u) [AddCommMonoid α] : AddCommMonoid αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance MulOpposite.addMonoidWithOne (α : Type u) [AddMonoidWithOne α] : AddMonoidWithOne αᵐᵒᵖ

Equations

• MulOpposite.addMonoidWithOne α = let src := MulOpposite.addMonoid α; let src_1 := MulOpposite.one α; let src_2 := MulOpposite.natCast α; AddMonoidWithOne.mk

instance MulOpposite.addCommMonoidWithOne (α : Type u) [AddCommMonoidWithOne α] : AddCommMonoidWithOne αᵐᵒᵖ

Equations

• MulOpposite.addCommMonoidWithOne α = let src := MulOpposite.addMonoidWithOne α; let src_1 := MulOpposite.addCommMonoid α; AddCommMonoidWithOne.mk (_ : ∀ (a b : αᵐᵒᵖ), a + b = b + a)

instance MulOpposite.subNegMonoid (α : Type u) [SubNegMonoid α] : SubNegMonoid αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance MulOpposite.addGroup (α : Type u) [AddGroup α] : AddGroup αᵐᵒᵖ

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instance MulOpposite.addCommGroup (α : Type u) [AddCommGroup α] : AddCommGroup αᵐᵒᵖ

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instance MulOpposite.addGroupWithOne (α : Type u) [AddGroupWithOne α] : AddGroupWithOne αᵐᵒᵖ

Equations

• MulOpposite.addGroupWithOne α = let src := MulOpposite.addMonoidWithOne α; let src_1 := MulOpposite.addGroup α; AddGroupWithOne.mk SubNegMonoid.zsmul (_ : ∀ (a : αᵐᵒᵖ), -a + a = 0)

instance MulOpposite.addCommGroupWithOne (α : Type u) [AddCommGroupWithOne α] : AddCommGroupWithOne αᵐᵒᵖ

Equations

• MulOpposite.addCommGroupWithOne α = let src := MulOpposite.addGroupWithOne α; let src_1 := MulOpposite.addCommGroup α; AddCommGroupWithOne.mk

Multiplicative structures on αᵐᵒᵖ

We also generate additive structures on αᵃᵒᵖ using to_additive

instance AddOpposite.isAddRightCancel (α : Type u) [Add α] [IsLeftCancelAdd α] : IsRightCancelAdd αᵃᵒᵖ

Equations

• (_ : IsRightCancelAdd αᵃᵒᵖ) = (_ : IsRightCancelAdd αᵃᵒᵖ)

instance MulOpposite.isRightCancelMul (α : Type u) [Mul α] [IsLeftCancelMul α] : IsRightCancelMul αᵐᵒᵖ

Equations

• (_ : IsRightCancelMul αᵐᵒᵖ) = (_ : IsRightCancelMul αᵐᵒᵖ)

instance AddOpposite.isAddLeftCancel (α : Type u) [Add α] [IsRightCancelAdd α] : IsLeftCancelAdd αᵃᵒᵖ

Equations

• (_ : IsLeftCancelAdd αᵃᵒᵖ) = (_ : IsLeftCancelAdd αᵃᵒᵖ)

instance MulOpposite.isLeftCancelMul (α : Type u) [Mul α] [IsRightCancelMul α] : IsLeftCancelMul αᵐᵒᵖ

Equations

• (_ : IsLeftCancelMul αᵐᵒᵖ) = (_ : IsLeftCancelMul αᵐᵒᵖ)

instance AddOpposite.addSemigroup (α : Type u) [AddSemigroup α] : AddSemigroup αᵃᵒᵖ

Equations

• AddOpposite.addSemigroup α = AddSemigroup.mk (_ : ∀ (x y z : αᵃᵒᵖ), x + y + z = x + (y + z))

theorem AddOpposite.addSemigroup.proof_1 (α : Type u_1) [AddSemigroup α] (x : αᵃᵒᵖ) (y : αᵃᵒᵖ) (z : αᵃᵒᵖ) : x + y + z = x + (y + z)

instance MulOpposite.semigroup (α : Type u) [Semigroup α] : Semigroup αᵐᵒᵖ

Equations

• MulOpposite.semigroup α = Semigroup.mk (_ : ∀ (x y z : αᵐᵒᵖ), x * y * z = x * (y * z))

instance AddOpposite.addLeftCancelSemigroup (α : Type u) [AddRightCancelSemigroup α] : AddLeftCancelSemigroup αᵃᵒᵖ

Equations

• AddOpposite.addLeftCancelSemigroup α = AddLeftCancelSemigroup.mk (_ : ∀ (x x_1 x_2 : αᵃᵒᵖ), x + x_1 = x + x_2 → x_1 = x_2)

theorem AddOpposite.addLeftCancelSemigroup.proof_1 (α : Type u_1) [AddRightCancelSemigroup α] : ∀ (x x_1 x_2 : αᵃᵒᵖ), x + x_1 = x + x_2 → x_1 = x_2

instance MulOpposite.leftCancelSemigroup (α : Type u) [RightCancelSemigroup α] : LeftCancelSemigroup αᵐᵒᵖ

Equations

• MulOpposite.leftCancelSemigroup α = LeftCancelSemigroup.mk (_ : ∀ (x x_1 x_2 : αᵐᵒᵖ), x * x_1 = x * x_2 → x_1 = x_2)

theorem AddOpposite.addRightCancelSemigroup.proof_1 (α : Type u_1) [AddLeftCancelSemigroup α] : ∀ (x x_1 x_2 : αᵃᵒᵖ), x + x_1 = x_2 + x_1 → x = x_2

instance AddOpposite.addRightCancelSemigroup (α : Type u) [AddLeftCancelSemigroup α] : AddRightCancelSemigroup αᵃᵒᵖ

Equations

• AddOpposite.addRightCancelSemigroup α = AddRightCancelSemigroup.mk (_ : ∀ (x x_1 x_2 : αᵃᵒᵖ), x + x_1 = x_2 + x_1 → x = x_2)

instance MulOpposite.rightCancelSemigroup (α : Type u) [LeftCancelSemigroup α] : RightCancelSemigroup αᵐᵒᵖ

Equations

• MulOpposite.rightCancelSemigroup α = RightCancelSemigroup.mk (_ : ∀ (x x_1 x_2 : αᵐᵒᵖ), x * x_1 = x_2 * x_1 → x = x_2)

instance AddOpposite.addCommSemigroup (α : Type u) [AddCommSemigroup α] : AddCommSemigroup αᵃᵒᵖ

Equations

• AddOpposite.addCommSemigroup α = AddCommSemigroup.mk (_ : ∀ (x y : αᵃᵒᵖ), x + y = y + x)

theorem AddOpposite.addCommSemigroup.proof_1 (α : Type u_1) [AddCommSemigroup α] (x : αᵃᵒᵖ) (y : αᵃᵒᵖ) : x + y = y + x

instance MulOpposite.commSemigroup (α : Type u) [CommSemigroup α] : CommSemigroup αᵐᵒᵖ

Equations

• MulOpposite.commSemigroup α = CommSemigroup.mk (_ : ∀ (x y : αᵐᵒᵖ), x * y = y * x)

theorem AddOpposite.addZeroClass.proof_1 (α : Type u_1) [AddZeroClass α] (x : αᵃᵒᵖ) : 0 + x = x

instance AddOpposite.addZeroClass (α : Type u) [AddZeroClass α] : AddZeroClass αᵃᵒᵖ

Equations

• AddOpposite.addZeroClass α = let src := AddOpposite.add α; let src_1 := AddOpposite.zero α; AddZeroClass.mk (_ : ∀ (x : αᵃᵒᵖ), 0 + x = x) (_ : ∀ (x : αᵃᵒᵖ), x + 0 = x)

theorem AddOpposite.addZeroClass.proof_2 (α : Type u_1) [AddZeroClass α] (x : αᵃᵒᵖ) : x + 0 = x

instance MulOpposite.mulOneClass (α : Type u) [MulOneClass α] : MulOneClass αᵐᵒᵖ

Equations

• MulOpposite.mulOneClass α = let src := MulOpposite.mul α; let src_1 := MulOpposite.one α; MulOneClass.mk (_ : ∀ (x : αᵐᵒᵖ), 1 * x = x) (_ : ∀ (x : αᵐᵒᵖ), x * 1 = x)

theorem AddOpposite.addMonoid.proof_3 (α : Type u_1) [AddMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

instance AddOpposite.addMonoid (α : Type u) [AddMonoid α] : AddMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.addMonoid.proof_2 (α : Type u_1) [AddMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

theorem AddOpposite.addMonoid.proof_4 (α : Type u_1) [AddMonoid α] (x : αᵃᵒᵖ) : (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) 0 x = 0

theorem AddOpposite.addMonoid.proof_1 (α : Type u_1) [AddMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) (c : αᵃᵒᵖ) : a + b + c = a + (b + c)

theorem AddOpposite.addMonoid.proof_5 (α : Type u_1) [AddMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (n + 1) x = x + (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) n x

instance MulOpposite.monoid (α : Type u) [Monoid α] : Monoid αᵐᵒᵖ

Equations

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theorem AddOpposite.addLeftCancelMonoid.proof_5 (α : Type u_1) [AddRightCancelMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : AddMonoid.nsmul (n + 1) x = x + AddMonoid.nsmul n x

instance AddOpposite.addLeftCancelMonoid (α : Type u) [AddRightCancelMonoid α] : AddLeftCancelMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.addLeftCancelMonoid.proof_4 (α : Type u_1) [AddRightCancelMonoid α] (x : αᵃᵒᵖ) : AddMonoid.nsmul 0 x = 0

theorem AddOpposite.addLeftCancelMonoid.proof_2 (α : Type u_1) [AddRightCancelMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

theorem AddOpposite.addLeftCancelMonoid.proof_1 (α : Type u_1) [AddRightCancelMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) (c : αᵃᵒᵖ) : a + b = a + c → b = c

theorem AddOpposite.addLeftCancelMonoid.proof_3 (α : Type u_1) [AddRightCancelMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

instance MulOpposite.leftCancelMonoid (α : Type u) [RightCancelMonoid α] : LeftCancelMonoid αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.addRightCancelMonoid.proof_5 (α : Type u_1) [AddLeftCancelMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : AddMonoid.nsmul (n + 1) x = x + AddMonoid.nsmul n x

theorem AddOpposite.addRightCancelMonoid.proof_3 (α : Type u_1) [AddLeftCancelMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

theorem AddOpposite.addRightCancelMonoid.proof_1 (α : Type u_1) [AddLeftCancelMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) (c : αᵃᵒᵖ) : a + b = c + b → a = c

instance AddOpposite.addRightCancelMonoid (α : Type u) [AddLeftCancelMonoid α] : AddRightCancelMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.addRightCancelMonoid.proof_4 (α : Type u_1) [AddLeftCancelMonoid α] (x : αᵃᵒᵖ) : AddMonoid.nsmul 0 x = 0

theorem AddOpposite.addRightCancelMonoid.proof_2 (α : Type u_1) [AddLeftCancelMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

instance MulOpposite.rightCancelMonoid (α : Type u) [LeftCancelMonoid α] : RightCancelMonoid αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.addCancelMonoid.proof_5 (α : Type u_1) [AddCancelMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) (c : αᵃᵒᵖ) : a + b = c + b → a = c

theorem AddOpposite.addCancelMonoid.proof_2 (α : Type u_1) [AddCancelMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

instance AddOpposite.addCancelMonoid (α : Type u) [AddCancelMonoid α] : AddCancelMonoid αᵃᵒᵖ

Equations

• AddOpposite.addCancelMonoid α = let src := AddOpposite.addRightCancelMonoid α; let src_1 := AddOpposite.addLeftCancelMonoid α; AddCancelMonoid.mk (_ : ∀ (a b c : αᵃᵒᵖ), a + b = c + b → a = c)

theorem AddOpposite.addCancelMonoid.proof_4 (α : Type u_1) [AddCancelMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : AddRightCancelMonoid.nsmul (n + 1) x = x + AddRightCancelMonoid.nsmul n x

theorem AddOpposite.addCancelMonoid.proof_3 (α : Type u_1) [AddCancelMonoid α] (x : αᵃᵒᵖ) : AddRightCancelMonoid.nsmul 0 x = 0

theorem AddOpposite.addCancelMonoid.proof_1 (α : Type u_1) [AddCancelMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

instance MulOpposite.cancelMonoid (α : Type u) [CancelMonoid α] : CancelMonoid αᵐᵒᵖ

Equations

• MulOpposite.cancelMonoid α = let src := MulOpposite.rightCancelMonoid α; let src_1 := MulOpposite.leftCancelMonoid α; CancelMonoid.mk (_ : ∀ (a b c : αᵐᵒᵖ), a * b = c * b → a = c)

theorem AddOpposite.addCommMonoid.proof_4 (α : Type u_1) [AddCommMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : AddMonoid.nsmul (n + 1) x = x + AddMonoid.nsmul n x

theorem AddOpposite.addCommMonoid.proof_2 (α : Type u_1) [AddCommMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

theorem AddOpposite.addCommMonoid.proof_3 (α : Type u_1) [AddCommMonoid α] (x : αᵃᵒᵖ) : AddMonoid.nsmul 0 x = 0

theorem AddOpposite.addCommMonoid.proof_1 (α : Type u_1) [AddCommMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

instance AddOpposite.addCommMonoid (α : Type u) [AddCommMonoid α] : AddCommMonoid αᵃᵒᵖ

Equations

• AddOpposite.addCommMonoid α = let src := AddOpposite.addMonoid α; let src_1 := AddOpposite.addCommSemigroup α; AddCommMonoid.mk (_ : ∀ (a b : αᵃᵒᵖ), a + b = b + a)

theorem AddOpposite.addCommMonoid.proof_5 (α : Type u_1) [AddCommMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a + b = b + a

instance MulOpposite.commMonoid (α : Type u) [CommMonoid α] : CommMonoid αᵐᵒᵖ

Equations

• MulOpposite.commMonoid α = let src := MulOpposite.monoid α; let src_1 := MulOpposite.commSemigroup α; CommMonoid.mk (_ : ∀ (a b : αᵐᵒᵖ), a * b = b * a)

theorem AddOpposite.addCancelCommMonoid.proof_1 (α : Type u_1) [AddCancelCommMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a + b = b + a

instance AddOpposite.addCancelCommMonoid (α : Type u) [AddCancelCommMonoid α] : AddCancelCommMonoid αᵃᵒᵖ

Equations

• AddOpposite.addCancelCommMonoid α = let src := AddOpposite.addCancelMonoid α; let src_1 := AddOpposite.addCommMonoid α; AddCancelCommMonoid.mk (_ : ∀ (a b : αᵃᵒᵖ), a + b = b + a)

instance MulOpposite.cancelCommMonoid (α : Type u) [CancelCommMonoid α] : CancelCommMonoid αᵐᵒᵖ

Equations

• MulOpposite.cancelCommMonoid α = let src := MulOpposite.cancelMonoid α; let src_1 := MulOpposite.commMonoid α; CancelCommMonoid.mk (_ : ∀ (a b : αᵐᵒᵖ), a * b = b * a)

theorem AddOpposite.subNegMonoid.proof_10 (α : Type u_1) [SubNegMonoid α] : ∀ (a b : αᵃᵒᵖ), a - b = a - b

theorem AddOpposite.subNegMonoid.proof_7 (α : Type u_1) [SubNegMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

theorem AddOpposite.subNegMonoid.proof_4 (α : Type u_1) [SubNegMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : AddMonoid.nsmul (n + 1) x = x + AddMonoid.nsmul n x

theorem AddOpposite.subNegMonoid.proof_3 (α : Type u_1) [SubNegMonoid α] (x : αᵃᵒᵖ) : AddMonoid.nsmul 0 x = 0

theorem AddOpposite.subNegMonoid.proof_1 (α : Type u_1) [SubNegMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

theorem AddOpposite.subNegMonoid.proof_11 (α : Type u_1) [SubNegMonoid α] (x : αᵃᵒᵖ) : (fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) 0 x = 0

theorem AddOpposite.subNegMonoid.proof_6 (α : Type u_1) [SubNegMonoid α] (a : αᵃᵒᵖ) : 0 + a = a

theorem AddOpposite.subNegMonoid.proof_2 (α : Type u_1) [SubNegMonoid α] (a : αᵃᵒᵖ) : a + 0 = a

instance AddOpposite.subNegMonoid (α : Type u) [SubNegMonoid α] : SubNegMonoid αᵃᵒᵖ

Equations

• AddOpposite.subNegMonoid α = let src := AddOpposite.addMonoid α; let src_1 := AddOpposite.neg α; SubNegMonoid.mk fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)

theorem AddOpposite.subNegMonoid.proof_13 (α : Type u_1) [SubNegMonoid α] (z : ℕ) (x : αᵃᵒᵖ) : (fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (Int.negSucc z) x = -(fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (↑(Nat.succ z)) x

theorem AddOpposite.subNegMonoid.proof_12 (α : Type u_1) [SubNegMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : (fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (Int.ofNat (Nat.succ n)) x = x + (fun (n : ℤ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (Int.ofNat n) x

theorem AddOpposite.subNegMonoid.proof_5 (α : Type u_1) [SubNegMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) (c : αᵃᵒᵖ) : a + b + c = a + (b + c)

theorem AddOpposite.subNegMonoid.proof_9 (α : Type u_1) [SubNegMonoid α] (n : ℕ) (x : αᵃᵒᵖ) : (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) (n + 1) x = x + (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) n x

theorem AddOpposite.subNegMonoid.proof_8 (α : Type u_1) [SubNegMonoid α] (x : αᵃᵒᵖ) : (fun (n : ℕ) (x : αᵃᵒᵖ) => AddOpposite.op (n • AddOpposite.unop x)) 0 x = 0

instance MulOpposite.divInvMonoid (α : Type u) [DivInvMonoid α] : DivInvMonoid αᵐᵒᵖ

Equations

• MulOpposite.divInvMonoid α = let src := MulOpposite.monoid α; let src_1 := MulOpposite.inv α; DivInvMonoid.mk fun (n : ℤ) (x : αᵐᵒᵖ) => MulOpposite.op (MulOpposite.unop x ^ n)

theorem AddOpposite.subtractionMonoid.proof_6 (α : Type u_1) [SubtractionMonoid α] : ∀ (x x_1 : αᵃᵒᵖ), -(x + x_1) = -x_1 + -x

theorem AddOpposite.subtractionMonoid.proof_7 (α : Type u_1) [SubtractionMonoid α] : ∀ (x x_1 : αᵃᵒᵖ), x + x_1 = 0 → -x = x_1

theorem AddOpposite.subtractionMonoid.proof_2 (α : Type u_1) [SubtractionMonoid α] (a : αᵃᵒᵖ) : SubNegMonoid.zsmul 0 a = 0

instance AddOpposite.subtractionMonoid (α : Type u) [SubtractionMonoid α] : SubtractionMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.subtractionMonoid.proof_5 (α : Type u_1) [SubtractionMonoid α] (x : αᵃᵒᵖ) : - -x = x

theorem AddOpposite.subtractionMonoid.proof_4 (α : Type u_1) [SubtractionMonoid α] (n : ℕ) (a : αᵃᵒᵖ) : SubNegMonoid.zsmul (Int.negSucc n) a = -SubNegMonoid.zsmul (↑(Nat.succ n)) a

theorem AddOpposite.subtractionMonoid.proof_1 (α : Type u_1) [SubtractionMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a - b = a + -b

theorem AddOpposite.subtractionMonoid.proof_3 (α : Type u_1) [SubtractionMonoid α] (n : ℕ) (a : αᵃᵒᵖ) : SubNegMonoid.zsmul (Int.ofNat (Nat.succ n)) a = a + SubNegMonoid.zsmul (Int.ofNat n) a

instance MulOpposite.divisionMonoid (α : Type u) [DivisionMonoid α] : DivisionMonoid αᵐᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

theorem AddOpposite.subtractionCommMonoid.proof_2 (α : Type u_1) [SubtractionCommMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : -(a + b) = -b + -a

theorem AddOpposite.subtractionCommMonoid.proof_1 (α : Type u_1) [SubtractionCommMonoid α] (x : αᵃᵒᵖ) : - -x = x

instance AddOpposite.subtractionCommMonoid (α : Type u) [SubtractionCommMonoid α] : SubtractionCommMonoid αᵃᵒᵖ

Equations

• AddOpposite.subtractionCommMonoid α = let src := AddOpposite.subtractionMonoid α; let src_1 := AddOpposite.addCommSemigroup α; SubtractionCommMonoid.mk (_ : ∀ (a b : αᵃᵒᵖ), a + b = b + a)

theorem AddOpposite.subtractionCommMonoid.proof_4 (α : Type u_1) [SubtractionCommMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a + b = b + a

theorem AddOpposite.subtractionCommMonoid.proof_3 (α : Type u_1) [SubtractionCommMonoid α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a + b = 0 → -a = b

instance MulOpposite.divisionCommMonoid (α : Type u) [DivisionCommMonoid α] : DivisionCommMonoid αᵐᵒᵖ

Equations

• MulOpposite.divisionCommMonoid α = let src := MulOpposite.divisionMonoid α; let src_1 := MulOpposite.commSemigroup α; DivisionCommMonoid.mk (_ : ∀ (a b : αᵐᵒᵖ), a * b = b * a)

theorem AddOpposite.addGroup.proof_5 (α : Type u_1) [AddGroup α] (x : αᵃᵒᵖ) : -x + x = 0

instance AddOpposite.addGroup (α : Type u) [AddGroup α] : AddGroup αᵃᵒᵖ

Equations

• AddOpposite.addGroup α = let src := AddOpposite.subNegMonoid α; AddGroup.mk (_ : ∀ (x : αᵃᵒᵖ), -x + x = 0)

theorem AddOpposite.addGroup.proof_4 (α : Type u_1) [AddGroup α] (n : ℕ) (a : αᵃᵒᵖ) : SubNegMonoid.zsmul (Int.negSucc n) a = -SubNegMonoid.zsmul (↑(Nat.succ n)) a

theorem AddOpposite.addGroup.proof_2 (α : Type u_1) [AddGroup α] (a : αᵃᵒᵖ) : SubNegMonoid.zsmul 0 a = 0

theorem AddOpposite.addGroup.proof_3 (α : Type u_1) [AddGroup α] (n : ℕ) (a : αᵃᵒᵖ) : SubNegMonoid.zsmul (Int.ofNat (Nat.succ n)) a = a + SubNegMonoid.zsmul (Int.ofNat n) a

theorem AddOpposite.addGroup.proof_1 (α : Type u_1) [AddGroup α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a - b = a + -b

instance MulOpposite.group (α : Type u) [Group α] : Group αᵐᵒᵖ

Equations

• MulOpposite.group α = let src := MulOpposite.divInvMonoid α; Group.mk (_ : ∀ (x : αᵐᵒᵖ), x⁻¹ * x = 1)

theorem AddOpposite.addCommGroup.proof_1 (α : Type u_1) [AddCommGroup α] (a : αᵃᵒᵖ) : -a + a = 0

instance AddOpposite.addCommGroup (α : Type u) [AddCommGroup α] : AddCommGroup αᵃᵒᵖ

Equations

• AddOpposite.addCommGroup α = let src := AddOpposite.addGroup α; let src_1 := AddOpposite.addCommMonoid α; AddCommGroup.mk (_ : ∀ (a b : αᵃᵒᵖ), a + b = b + a)

theorem AddOpposite.addCommGroup.proof_2 (α : Type u_1) [AddCommGroup α] (a : αᵃᵒᵖ) (b : αᵃᵒᵖ) : a + b = b + a

instance MulOpposite.commGroup (α : Type u) [CommGroup α] : CommGroup αᵐᵒᵖ

Equations

• MulOpposite.commGroup α = let src := MulOpposite.group α; let src_1 := MulOpposite.commMonoid α; CommGroup.mk (_ : ∀ (a b : αᵐᵒᵖ), a * b = b * a)

@[simp]

theorem AddOpposite.op_natCast {α : Type u} [NatCast α] (n : ℕ) : AddOpposite.op ↑n = ↑n

@[simp]

theorem MulOpposite.op_natCast {α : Type u} [NatCast α] (n : ℕ) : MulOpposite.op ↑n = ↑n

@[simp]

theorem AddOpposite.op_intCast {α : Type u} [IntCast α] (n : ℤ) : AddOpposite.op ↑n = ↑n

@[simp]

theorem MulOpposite.op_intCast {α : Type u} [IntCast α] (n : ℤ) : MulOpposite.op ↑n = ↑n

@[simp]

theorem AddOpposite.unop_natCast {α : Type u} [NatCast α] (n : ℕ) : AddOpposite.unop ↑n = ↑n

@[simp]

theorem MulOpposite.unop_natCast {α : Type u} [NatCast α] (n : ℕ) : MulOpposite.unop ↑n = ↑n

@[simp]

theorem AddOpposite.unop_intCast {α : Type u} [IntCast α] (n : ℤ) : AddOpposite.unop ↑n = ↑n

@[simp]

theorem MulOpposite.unop_intCast {α : Type u} [IntCast α] (n : ℤ) : MulOpposite.unop ↑n = ↑n

@[simp]

theorem AddOpposite.unop_sub {α : Type u} [SubNegMonoid α] (x : αᵃᵒᵖ) (y : αᵃᵒᵖ) : AddOpposite.unop (x - y) = -AddOpposite.unop y + AddOpposite.unop x

@[simp]

theorem MulOpposite.unop_div {α : Type u} [DivInvMonoid α] (x : αᵐᵒᵖ) (y : αᵐᵒᵖ) : MulOpposite.unop (x / y) = (MulOpposite.unop y)⁻¹ * MulOpposite.unop x

@[simp]

theorem AddOpposite.op_sub {α : Type u} [SubNegMonoid α] (x : α) (y : α) : AddOpposite.op (x - y) = -AddOpposite.op y + AddOpposite.op x

@[simp]

theorem MulOpposite.op_div {α : Type u} [DivInvMonoid α] (x : α) (y : α) : MulOpposite.op (x / y) = (MulOpposite.op y)⁻¹ * MulOpposite.op x

@[simp]

theorem AddOpposite.semiconjBy_op {α : Type u} [Add α] {a : α} {x : α} {y : α} : AddSemiconjBy (AddOpposite.op a) (AddOpposite.op y) (AddOpposite.op x) ↔ AddSemiconjBy a x y

@[simp]

theorem MulOpposite.semiconjBy_op {α : Type u} [Mul α] {a : α} {x : α} {y : α} : SemiconjBy (MulOpposite.op a) (MulOpposite.op y) (MulOpposite.op x) ↔ SemiconjBy a x y

@[simp]

theorem AddOpposite.semiconjBy_unop {α : Type u} [Add α] {a : αᵃᵒᵖ} {x : αᵃᵒᵖ} {y : αᵃᵒᵖ} : AddSemiconjBy (AddOpposite.unop a) (AddOpposite.unop y) (AddOpposite.unop x) ↔ AddSemiconjBy a x y

@[simp]

theorem MulOpposite.semiconjBy_unop {α : Type u} [Mul α] {a : αᵐᵒᵖ} {x : αᵐᵒᵖ} {y : αᵐᵒᵖ} : SemiconjBy (MulOpposite.unop a) (MulOpposite.unop y) (MulOpposite.unop x) ↔ SemiconjBy a x y

theorem AddSemiconjBy.op {α : Type u} [Add α] {a : α} {x : α} {y : α} (h : AddSemiconjBy a x y) : AddSemiconjBy (AddOpposite.op a) (AddOpposite.op y) (AddOpposite.op x)

theorem SemiconjBy.op {α : Type u} [Mul α] {a : α} {x : α} {y : α} (h : SemiconjBy a x y) : SemiconjBy (MulOpposite.op a) (MulOpposite.op y) (MulOpposite.op x)

theorem AddSemiconjBy.unop {α : Type u} [Add α] {a : αᵃᵒᵖ} {x : αᵃᵒᵖ} {y : αᵃᵒᵖ} (h : AddSemiconjBy a x y) : AddSemiconjBy (AddOpposite.unop a) (AddOpposite.unop y) (AddOpposite.unop x)

theorem SemiconjBy.unop {α : Type u} [Mul α] {a : αᵐᵒᵖ} {x : αᵐᵒᵖ} {y : αᵐᵒᵖ} (h : SemiconjBy a x y) : SemiconjBy (MulOpposite.unop a) (MulOpposite.unop y) (MulOpposite.unop x)

theorem AddCommute.op {α : Type u} [Add α] {x : α} {y : α} (h : AddCommute x y) : AddCommute (AddOpposite.op x) (AddOpposite.op y)

theorem Commute.op {α : Type u} [Mul α] {x : α} {y : α} (h : Commute x y) : Commute (MulOpposite.op x) (MulOpposite.op y)

theorem AddOpposite.Commute.unop {α : Type u} [Add α] {x : αᵃᵒᵖ} {y : αᵃᵒᵖ} (h : AddCommute x y) : AddCommute (AddOpposite.unop x) (AddOpposite.unop y)

theorem MulOpposite.Commute.unop {α : Type u} [Mul α] {x : αᵐᵒᵖ} {y : αᵐᵒᵖ} (h : Commute x y) : Commute (MulOpposite.unop x) (MulOpposite.unop y)

@[simp]

theorem AddOpposite.commute_op {α : Type u} [Add α] {x : α} {y : α} : AddCommute (AddOpposite.op x) (AddOpposite.op y) ↔ AddCommute x y

@[simp]

theorem MulOpposite.commute_op {α : Type u} [Mul α] {x : α} {y : α} : Commute (MulOpposite.op x) (MulOpposite.op y) ↔ Commute x y

@[simp]

theorem AddOpposite.commute_unop {α : Type u} [Add α] {x : αᵃᵒᵖ} {y : αᵃᵒᵖ} : AddCommute (AddOpposite.unop x) (AddOpposite.unop y) ↔ AddCommute x y

@[simp]

theorem MulOpposite.commute_unop {α : Type u} [Mul α] {x : αᵐᵒᵖ} {y : αᵐᵒᵖ} : Commute (MulOpposite.unop x) (MulOpposite.unop y) ↔ Commute x y

@[simp]

theorem MulOpposite.opAddEquiv_symm_apply {α : Type u} [Add α] : ⇑(AddEquiv.symm MulOpposite.opAddEquiv) = MulOpposite.unop

@[simp]

theorem MulOpposite.opAddEquiv_apply {α : Type u} [Add α] : ⇑MulOpposite.opAddEquiv = MulOpposite.op

def MulOpposite.opAddEquiv {α : Type u} [Add α] : α ≃+ αᵐᵒᵖ

The function MulOpposite.op is an additive equivalence.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem MulOpposite.opAddEquiv_toEquiv {α : Type u} [Add α] : ↑MulOpposite.opAddEquiv = MulOpposite.opEquiv

Multiplicative structures on αᵃᵒᵖ

instance AddOpposite.semigroup (α : Type u) [Semigroup α] : Semigroup αᵃᵒᵖ

Equations

• AddOpposite.semigroup α = Function.Injective.semigroup AddOpposite.unop (_ : Function.Injective AddOpposite.unop) (_ : ∀ (x x_1 : αᵃᵒᵖ), AddOpposite.unop (x * x_1) = AddOpposite.unop (x * x_1))

instance AddOpposite.leftCancelSemigroup (α : Type u) [LeftCancelSemigroup α] : LeftCancelSemigroup αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.rightCancelSemigroup (α : Type u) [RightCancelSemigroup α] : RightCancelSemigroup αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.commSemigroup (α : Type u) [CommSemigroup α] : CommSemigroup αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.mulOneClass (α : Type u) [MulOneClass α] : MulOneClass αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.pow (α : Type u) {β : Type u_1} [Pow α β] : Pow αᵃᵒᵖ β

Equations

• AddOpposite.pow α = { pow := fun (a : αᵃᵒᵖ) (b : β) => AddOpposite.op (AddOpposite.unop a ^ b) }

@[simp]

theorem AddOpposite.op_pow (α : Type u) {β : Type u_1} [Pow α β] (a : α) (b : β) : AddOpposite.op (a ^ b) = AddOpposite.op a ^ b

@[simp]

theorem AddOpposite.unop_pow (α : Type u) {β : Type u_1} [Pow α β] (a : αᵃᵒᵖ) (b : β) : AddOpposite.unop (a ^ b) = AddOpposite.unop a ^ b

instance AddOpposite.monoid (α : Type u) [Monoid α] : Monoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.commMonoid (α : Type u) [CommMonoid α] : CommMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.divInvMonoid (α : Type u) [DivInvMonoid α] : DivInvMonoid αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.group (α : Type u) [Group α] : Group αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.commGroup (α : Type u) [CommGroup α] : CommGroup αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.addCommMonoidWithOne (α : Type u) [AddCommMonoidWithOne α] : AddCommMonoidWithOne αᵃᵒᵖ

Equations

• One or more equations did not get rendered due to their size.

instance AddOpposite.addCommGroupWithOne (α : Type u) [AddCommGroupWithOne α] : AddCommGroupWithOne αᵃᵒᵖ

Equations

• AddOpposite.addCommGroupWithOne α = let src := AddOpposite.addCommMonoidWithOne α; let src_1 := AddOpposite.addCommGroup α; let src_2 := AddOpposite.intCast α; AddCommGroupWithOne.mk

@[simp]

theorem AddOpposite.opMulEquiv_apply {α : Type u} [Mul α] : ⇑AddOpposite.opMulEquiv = AddOpposite.op

@[simp]

theorem AddOpposite.opMulEquiv_symm_apply {α : Type u} [Mul α] : ⇑(MulEquiv.symm AddOpposite.opMulEquiv) = AddOpposite.unop

def AddOpposite.opMulEquiv {α : Type u} [Mul α] : α ≃* αᵃᵒᵖ

The function AddOpposite.op is a multiplicative equivalence.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem AddOpposite.opMulEquiv_toEquiv {α : Type u} [Mul α] : ↑AddOpposite.opMulEquiv = AddOpposite.opEquiv

def AddEquiv.neg' (G : Type u_1) [SubtractionMonoid G] : G ≃+ Gᵃᵒᵖ

Negation on an additive group is an AddEquiv to the opposite group. When G is commutative, there is AddEquiv.inv.

Equations

• One or more equations did not get rendered due to their size.

theorem AddEquiv.neg'.proof_2 (G : Type u_1) [SubtractionMonoid G] : Function.RightInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun

theorem AddEquiv.neg'.proof_3 (G : Type u_1) [SubtractionMonoid G] (x : G) (y : G) : Equiv.toFun { toFun := ((Equiv.neg G).trans AddOpposite.opEquiv).toFun, invFun := ((Equiv.neg G).trans AddOpposite.opEquiv).invFun, left_inv := (_ : Function.LeftInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun), right_inv := (_ : Function.RightInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun) } (x + y) = Equiv.toFun { toFun := ((Equiv.neg G).trans AddOpposite.opEquiv).toFun, invFun := ((Equiv.neg G).trans AddOpposite.opEquiv).invFun, left_inv := (_ : Function.LeftInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun), right_inv := (_ : Function.RightInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun) } x + Equiv.toFun { toFun := ((Equiv.neg G).trans AddOpposite.opEquiv).toFun, invFun := ((Equiv.neg G).trans AddOpposite.opEquiv).invFun, left_inv := (_ : Function.LeftInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun), right_inv := (_ : Function.RightInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun) } y

theorem AddEquiv.neg'.proof_1 (G : Type u_1) [SubtractionMonoid G] : Function.LeftInverse ((Equiv.neg G).trans AddOpposite.opEquiv).invFun ((Equiv.neg G).trans AddOpposite.opEquiv).toFun

@[simp]

theorem MulEquiv.inv'_symm_apply (G : Type u_1) [DivisionMonoid G] : ⇑(MulEquiv.symm (MulEquiv.inv' G)) = Inv.inv ∘ MulOpposite.unop

@[simp]

theorem AddEquiv.neg'_apply (G : Type u_1) [SubtractionMonoid G] : ⇑(AddEquiv.neg' G) = AddOpposite.op ∘ Neg.neg

@[simp]

theorem AddEquiv.neg'_symm_apply (G : Type u_1) [SubtractionMonoid G] : ⇑(AddEquiv.symm (AddEquiv.neg' G)) = Neg.neg ∘ AddOpposite.unop

@[simp]

theorem MulEquiv.inv'_apply (G : Type u_1) [DivisionMonoid G] : ⇑(MulEquiv.inv' G) = MulOpposite.op ∘ Inv.inv

def MulEquiv.inv' (G : Type u_1) [DivisionMonoid G] : G ≃* Gᵐᵒᵖ

Inversion on a group is a MulEquiv to the opposite group. When G is commutative, there is MulEquiv.inv.

Equations

• One or more equations did not get rendered due to their size.

def AddHom.toOpposite {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : AddHom M Nᵃᵒᵖ

An additive semigroup homomorphism f : AddHom M N such that f x additively commutes with f y for all x, y defines an additive semigroup homomorphism to Sᵃᵒᵖ.

Equations

• AddHom.toOpposite f hf = { toFun := AddOpposite.op ∘ ⇑f, map_add' := (_ : ∀ (x y : M), AddOpposite.op (f (x + y)) = AddOpposite.op (f x) + AddOpposite.op (f y)) }

theorem AddHom.toOpposite.proof_1 {M : Type u_2} {N : Type u_1} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) (x : M) (y : M) : AddOpposite.op (f (x + y)) = AddOpposite.op (f x) + AddOpposite.op (f y)

@[simp]

theorem AddHom.toOpposite_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ⇑(AddHom.toOpposite f hf) = AddOpposite.op ∘ ⇑f

@[simp]

theorem MulHom.toOpposite_apply {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : M →ₙ* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : ⇑(MulHom.toOpposite f hf) = MulOpposite.op ∘ ⇑f

def MulHom.toOpposite {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : M →ₙ* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : M →ₙ* Nᵐᵒᵖ

A semigroup homomorphism f : M →ₙ* N such that f x commutes with f y for all x, y defines a semigroup homomorphism to Nᵐᵒᵖ.

Equations

• MulHom.toOpposite f hf = { toFun := MulOpposite.op ∘ ⇑f, map_mul' := (_ : ∀ (x y : M), MulOpposite.op (f (x * y)) = MulOpposite.op (f x) * MulOpposite.op (f y)) }

def AddHom.fromOpposite {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : AddHom Mᵃᵒᵖ N

An additive semigroup homomorphism f : AddHom M N such that f x additively commutes with f y for all x, y defines an additive semigroup homomorphism from Mᵃᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

theorem AddHom.fromOpposite.proof_1 {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ∀ (x x_1 : Mᵃᵒᵖ), f (AddOpposite.unop x_1 + AddOpposite.unop x) = (⇑f ∘ AddOpposite.unop) x + (⇑f ∘ AddOpposite.unop) x_1

@[simp]

theorem MulHom.fromOpposite_apply {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : M →ₙ* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : ⇑(MulHom.fromOpposite f hf) = ⇑f ∘ MulOpposite.unop

@[simp]

theorem AddHom.fromOpposite_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ⇑(AddHom.fromOpposite f hf) = ⇑f ∘ AddOpposite.unop

def MulHom.fromOpposite {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : M →ₙ* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : Mᵐᵒᵖ →ₙ* N

A semigroup homomorphism f : M →ₙ* N such that f x commutes with f y for all x, y defines a semigroup homomorphism from Mᵐᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

theorem AddMonoidHom.toOpposite.proof_2 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) (x : M) (y : M) : AddOpposite.op (f (x + y)) = AddOpposite.op (f x) + AddOpposite.op (f y)

theorem AddMonoidHom.toOpposite.proof_1 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) : AddOpposite.op (f 0) = AddOpposite.op 0

def AddMonoidHom.toOpposite {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : M →+ Nᵃᵒᵖ

An additive monoid homomorphism f : M →+ N such that f x additively commutes with f y for all x, y defines an additive monoid homomorphism to Sᵃᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem MonoidHom.toOpposite_apply {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : M →* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : ⇑(MonoidHom.toOpposite f hf) = MulOpposite.op ∘ ⇑f

@[simp]

theorem AddMonoidHom.toOpposite_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ⇑(AddMonoidHom.toOpposite f hf) = AddOpposite.op ∘ ⇑f

def MonoidHom.toOpposite {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : M →* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : M →* Nᵐᵒᵖ

A monoid homomorphism f : M →* N such that f x commutes with f y for all x, y defines a monoid homomorphism to Nᵐᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

def AddMonoidHom.fromOpposite {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : Mᵃᵒᵖ →+ N

An additive monoid homomorphism f : M →+ N such that f x additively commutes with f y for all x, y defines an additive monoid homomorphism from Mᵃᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

theorem AddMonoidHom.fromOpposite.proof_1 {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ∀ (x x_1 : Mᵃᵒᵖ), f (AddOpposite.unop x_1 + AddOpposite.unop x) = ZeroHom.toFun { toFun := ⇑f ∘ AddOpposite.unop, map_zero' := (_ : f 0 = 0) } x + ZeroHom.toFun { toFun := ⇑f ∘ AddOpposite.unop, map_zero' := (_ : f 0 = 0) } x_1

@[simp]

theorem MonoidHom.fromOpposite_apply {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : M →* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : ⇑(MonoidHom.fromOpposite f hf) = ⇑f ∘ MulOpposite.unop

@[simp]

theorem AddMonoidHom.fromOpposite_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (hf : ∀ (x y : M), AddCommute (f x) (f y)) : ⇑(AddMonoidHom.fromOpposite f hf) = ⇑f ∘ AddOpposite.unop

def MonoidHom.fromOpposite {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : M →* N) (hf : ∀ (x y : M), Commute (f x) (f y)) : Mᵐᵒᵖ →* N

A monoid homomorphism f : M →* N such that f x commutes with f y for all x, y defines a monoid homomorphism from Mᵐᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

theorem AddUnits.opEquiv.proof_2 {M : Type u_1} [AddMonoid M] (u : AddUnits Mᵃᵒᵖ) : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0

theorem AddUnits.opEquiv.proof_3 {M : Type u_1} [AddMonoid M] (u : AddUnits M) : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0

theorem AddUnits.opEquiv.proof_7 {M : Type u_1} [AddMonoid M] (x : AddUnits Mᵃᵒᵖ) (y : AddUnits Mᵃᵒᵖ) : Equiv.toFun { toFun := fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }, invFun := fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X, left_inv := (_ : ∀ (x : AddUnits Mᵃᵒᵖ), (fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) ((fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) x) = x), right_inv := (_ : ∀ (x : (AddUnits M)ᵃᵒᵖ), (fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) ((fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) x) = x) } (x + y) = Equiv.toFun { toFun := fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }, invFun := fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X, left_inv := (_ : ∀ (x : AddUnits Mᵃᵒᵖ), (fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) ((fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) x) = x), right_inv := (_ : ∀ (x : (AddUnits M)ᵃᵒᵖ), (fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) ((fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) x) = x) } x + Equiv.toFun { toFun := fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }, invFun := fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X, left_inv := (_ : ∀ (x : AddUnits Mᵃᵒᵖ), (fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) ((fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) x) = x), right_inv := (_ : ∀ (x : (AddUnits M)ᵃᵒᵖ), (fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) ((fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) x) = x) } y

theorem AddUnits.opEquiv.proof_1 {M : Type u_1} [AddMonoid M] (u : AddUnits Mᵃᵒᵖ) : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0

theorem AddUnits.opEquiv.proof_5 {M : Type u_1} [AddMonoid M] (x : AddUnits Mᵃᵒᵖ) : (fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) ((fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) x) = x

theorem AddUnits.opEquiv.proof_6 {M : Type u_1} [AddMonoid M] (x : (AddUnits M)ᵃᵒᵖ) : (fun (u : AddUnits Mᵃᵒᵖ) => AddOpposite.op { val := AddOpposite.unop ↑u, neg := AddOpposite.unop ↑(-u), val_neg := (_ : AddOpposite.unop ↑u + AddOpposite.unop ↑(-u) = 0), neg_val := (_ : AddOpposite.unop ↑(-u) + AddOpposite.unop ↑u = 0) }) ((fun (X : (AddUnits M)ᵃᵒᵖ) => AddOpposite.rec' (fun (u : AddUnits M) => { val := AddOpposite.op ↑u, neg := AddOpposite.op ↑(-u), val_neg := (_ : AddOpposite.op ↑u + AddOpposite.op ↑(-u) = 0), neg_val := (_ : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0) }) X) x) = x

def AddUnits.opEquiv {M : Type u_1} [AddMonoid M] : AddUnits Mᵃᵒᵖ ≃+ (AddUnits M)ᵃᵒᵖ

The additive units of the additive opposites are equivalent to the additive opposites of the additive units.

Equations

• One or more equations did not get rendered due to their size.

theorem AddUnits.opEquiv.proof_4 {M : Type u_1} [AddMonoid M] (u : AddUnits M) : AddOpposite.op ↑(-u) + AddOpposite.op ↑u = 0

def Units.opEquiv {M : Type u_1} [Monoid M] : Mᵐᵒᵖˣ ≃* Mˣᵐᵒᵖ

The units of the opposites are equivalent to the opposites of the units.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem AddUnits.coe_unop_opEquiv {M : Type u_1} [AddMonoid M] (u : AddUnits Mᵃᵒᵖ) : ↑(AddOpposite.unop (AddUnits.opEquiv u)) = AddOpposite.unop ↑u

@[simp]

theorem Units.coe_unop_opEquiv {M : Type u_1} [Monoid M] (u : Mᵐᵒᵖˣ) : ↑(MulOpposite.unop (Units.opEquiv u)) = MulOpposite.unop ↑u

@[simp]

theorem AddUnits.coe_opEquiv_symm {M : Type u_1} [AddMonoid M] (u : (AddUnits M)ᵃᵒᵖ) : ↑((AddEquiv.symm AddUnits.opEquiv) u) = AddOpposite.op ↑(AddOpposite.unop u)

@[simp]

theorem Units.coe_opEquiv_symm {M : Type u_1} [Monoid M] (u : Mˣᵐᵒᵖ) : ↑((MulEquiv.symm Units.opEquiv) u) = MulOpposite.op ↑(MulOpposite.unop u)

abbrev IsAddUnit.op.match_1 {M : Type u_1} [AddMonoid M] {m : M} (motive : IsAddUnit m → Prop) : ∀ (h : IsAddUnit m), (∀ (u : AddUnits M) (hu : ↑u = m), motive (_ : ∃ (u : AddUnits M), ↑u = m)) → motive h

Equations

• (_ : motive h) = (_ : motive h)

theorem IsAddUnit.op {M : Type u_1} [AddMonoid M] {m : M} (h : IsAddUnit m) : IsAddUnit (AddOpposite.op m)

theorem IsUnit.op {M : Type u_1} [Monoid M] {m : M} (h : IsUnit m) : IsUnit (MulOpposite.op m)

theorem IsAddUnit.unop {M : Type u_1} [AddMonoid M] {m : Mᵃᵒᵖ} (h : IsAddUnit m) : IsAddUnit (AddOpposite.unop m)

abbrev IsAddUnit.unop.match_1 {M : Type u_1} [AddMonoid M] {m : Mᵃᵒᵖ} (motive : IsAddUnit m → Prop) : ∀ (h : IsAddUnit m), (∀ (u : AddUnits Mᵃᵒᵖ) (hu : ↑u = m), motive (_ : ∃ (u : AddUnits Mᵃᵒᵖ), ↑u = m)) → motive h

Equations

• (_ : motive h) = (_ : motive h)

theorem IsUnit.unop {M : Type u_1} [Monoid M] {m : Mᵐᵒᵖ} (h : IsUnit m) : IsUnit (MulOpposite.unop m)

@[simp]

theorem isAddUnit_op {M : Type u_1} [AddMonoid M] {m : M} : IsAddUnit (AddOpposite.op m) ↔ IsAddUnit m

@[simp]

theorem isUnit_op {M : Type u_1} [Monoid M] {m : M} : IsUnit (MulOpposite.op m) ↔ IsUnit m

@[simp]

theorem isAddUnit_unop {M : Type u_1} [AddMonoid M] {m : Mᵃᵒᵖ} : IsAddUnit (AddOpposite.unop m) ↔ IsAddUnit m

@[simp]

theorem isUnit_unop {M : Type u_1} [Monoid M] {m : Mᵐᵒᵖ} : IsUnit (MulOpposite.unop m) ↔ IsUnit m

theorem AddHom.op.proof_2 {M : Type u_2} {N : Type u_1} [Add M] [Add N] (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) (x : M) (y : M) : AddOpposite.unop ((⇑f ∘ AddOpposite.op) (x + y)) = AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) x + (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) y }

theorem AddHom.op.proof_4 {M : Type u_2} {N : Type u_1} [Add M] [Add N] : ∀ (x : AddHom Mᵃᵒᵖ Nᵃᵒᵖ), (fun (f : AddHom M N) => { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) (x + y) = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x + (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) y) }) ((fun (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) => { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_add' := (_ : ∀ (x y : M), AddOpposite.unop ((⇑f ∘ AddOpposite.op) (x + y)) = AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) x + (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) y }) }) x) = (fun (f : AddHom M N) => { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) (x + y) = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x + (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) y) }) ((fun (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) => { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_add' := (_ : ∀ (x y : M), AddOpposite.unop ((⇑f ∘ AddOpposite.op) (x + y)) = AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) x + (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) y }) }) x)

theorem AddHom.op.proof_1 {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) (x : Mᵃᵒᵖ) (y : Mᵃᵒᵖ) : (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) (x + y) = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x + (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) y

def AddHom.op {M : Type u_1} {N : Type u_2} [Add M] [Add N] : AddHom M N ≃ AddHom Mᵃᵒᵖ Nᵃᵒᵖ

An additive semigroup homomorphism AddHom M N can equivalently be viewed as an additive semigroup homomorphism AddHom Mᵃᵒᵖ Nᵃᵒᵖ. This is the action of the (fully faithful)ᵃᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

theorem AddHom.op.proof_3 {M : Type u_2} {N : Type u_1} [Add M] [Add N] : ∀ (x : AddHom M N), (fun (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) => { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_add' := (_ : ∀ (x y : M), AddOpposite.unop ((⇑f ∘ AddOpposite.op) (x + y)) = AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) x + (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) y }) }) ((fun (f : AddHom M N) => { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) (x + y) = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x + (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) y) }) x) = (fun (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) => { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_add' := (_ : ∀ (x y : M), AddOpposite.unop ((⇑f ∘ AddOpposite.op) (x + y)) = AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) x + (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) y }) }) ((fun (f : AddHom M N) => { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) (x + y) = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x + (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) y) }) x)

@[simp]

theorem MulHom.op_apply_apply {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : M →ₙ* N) : ∀ (a : Mᵐᵒᵖ), (MulHom.op f) a = (MulOpposite.op ∘ ⇑f ∘ MulOpposite.unop) a

@[simp]

theorem AddHom.op_symm_apply_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom Mᵃᵒᵖ Nᵃᵒᵖ) : ∀ (a : M), (AddHom.op.symm f) a = (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) a

@[simp]

theorem AddHom.op_apply_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) : ∀ (a : Mᵃᵒᵖ), (AddHom.op f) a = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) a

@[simp]

theorem MulHom.op_symm_apply_apply {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] (f : Mᵐᵒᵖ →ₙ* Nᵐᵒᵖ) : ∀ (a : M), (MulHom.op.symm f) a = (MulOpposite.unop ∘ ⇑f ∘ MulOpposite.op) a

def MulHom.op {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] : (M →ₙ* N) ≃ (Mᵐᵒᵖ →ₙ* Nᵐᵒᵖ)

A semigroup homomorphism M →ₙ* N can equivalently be viewed as a semigroup homomorphism Mᵐᵒᵖ →ₙ* Nᵐᵒᵖ. This is the action of the (fully faithful) ᵐᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

def AddHom.unop {M : Type u_1} {N : Type u_2} [Add M] [Add N] : AddHom Mᵃᵒᵖ Nᵃᵒᵖ ≃ AddHom M N

The 'unopposite' of an additive semigroup homomorphism Mᵃᵒᵖ →ₙ+ Nᵃᵒᵖ. Inverse to AddHom.op.

Equations

• AddHom.unop = AddHom.op.symm

def MulHom.unop {M : Type u_1} {N : Type u_2} [Mul M] [Mul N] : (Mᵐᵒᵖ →ₙ* Nᵐᵒᵖ) ≃ (M →ₙ* N)

The 'unopposite' of a semigroup homomorphism Mᵐᵒᵖ →ₙ* Nᵐᵒᵖ. Inverse to MulHom.op.

Equations

• MulHom.unop = MulHom.op.symm

@[simp]

theorem AddHom.mulOp_apply_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom M N) : ∀ (a : Mᵐᵒᵖ), (AddHom.mulOp f) a = (MulOpposite.op ∘ ⇑f ∘ MulOpposite.unop) a

@[simp]

theorem AddHom.mulOp_symm_apply_apply {M : Type u_1} {N : Type u_2} [Add M] [Add N] (f : AddHom Mᵐᵒᵖ Nᵐᵒᵖ) : ∀ (a : M), (AddHom.mulOp.symm f) a = (MulOpposite.unop ∘ ⇑f ∘ MulOpposite.op) a

def AddHom.mulOp {M : Type u_1} {N : Type u_2} [Add M] [Add N] : AddHom M N ≃ AddHom Mᵐᵒᵖ Nᵐᵒᵖ

An additive semigroup homomorphism AddHom M N can equivalently be viewed as an additive homomorphism AddHom Mᵐᵒᵖ Nᵐᵒᵖ. This is the action of the (fully faithful) ᵐᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

def AddHom.mulUnop {α : Type u_1} {β : Type u_2} [Add α] [Add β] : AddHom αᵐᵒᵖ βᵐᵒᵖ ≃ AddHom α β

The 'unopposite' of an additive semigroup hom αᵐᵒᵖ →+ βᵐᵒᵖ. Inverse to AddHom.mul_op.

Equations

• AddHom.mulUnop = AddHom.mulOp.symm

def AddMonoidHom.op {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] : (M →+ N) ≃ (Mᵃᵒᵖ →+ Nᵃᵒᵖ)

An additive monoid homomorphism M →+ N can equivalently be viewed as an additive monoid homomorphism Mᵃᵒᵖ →+ Nᵃᵒᵖ. This is the action of the (fully faithful) ᵃᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

theorem AddMonoidHom.op.proof_4 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) (x : M) (y : M) : AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } x + ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } y }

theorem AddMonoidHom.op.proof_6 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] : ∀ (x : Mᵃᵒᵖ →+ Nᵃᵒᵖ), (fun (f : M →+ N) => { toZeroHom := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) }, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } (x + y) = ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } x + ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } y) }) ((fun (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) => { toZeroHom := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) }, map_add' := (_ : ∀ (x y : M), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } x + ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } y }) }) x) = (fun (f : M →+ N) => { toZeroHom := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) }, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } (x + y) = ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } x + ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } y) }) ((fun (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) => { toZeroHom := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) }, map_add' := (_ : ∀ (x y : M), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } x + ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } y }) }) x)

theorem AddMonoidHom.op.proof_5 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] : ∀ (x : M →+ N), (fun (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) => { toZeroHom := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) }, map_add' := (_ : ∀ (x y : M), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } x + ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } y }) }) ((fun (f : M →+ N) => { toZeroHom := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) }, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } (x + y) = ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } x + ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } y) }) x) = (fun (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) => { toZeroHom := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) }, map_add' := (_ : ∀ (x y : M), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } x + ZeroHom.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, map_zero' := (_ : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }) } y }) }) ((fun (f : M →+ N) => { toZeroHom := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) }, map_add' := (_ : ∀ (x y : Mᵃᵒᵖ), ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } (x + y) = ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } x + ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } y) }) x)

theorem AddMonoidHom.op.proof_2 {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) (x : Mᵃᵒᵖ) (y : Mᵃᵒᵖ) : ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } (x + y) = ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } x + ZeroHom.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, map_zero' := (_ : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0) } y

theorem AddMonoidHom.op.proof_3 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) : AddOpposite.unop ((⇑f ∘ AddOpposite.op) 0) = AddOpposite.unop { unop' := 0 }

theorem AddMonoidHom.op.proof_1 {M : Type u_2} {N : Type u_1} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) : AddOpposite.op ((⇑f ∘ AddOpposite.unop) 0) = AddOpposite.op 0

@[simp]

theorem AddMonoidHom.op_symm_apply_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : Mᵃᵒᵖ →+ Nᵃᵒᵖ) : ∀ (a : M), (AddMonoidHom.op.symm f) a = (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) a

@[simp]

theorem MonoidHom.op_symm_apply_apply {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : Mᵐᵒᵖ →* Nᵐᵒᵖ) : ∀ (a : M), (MonoidHom.op.symm f) a = (MulOpposite.unop ∘ ⇑f ∘ MulOpposite.op) a

@[simp]

theorem MonoidHom.op_apply_apply {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] (f : M →* N) : ∀ (a : Mᵐᵒᵖ), (MonoidHom.op f) a = (MulOpposite.op ∘ ⇑f ∘ MulOpposite.unop) a

@[simp]

theorem AddMonoidHom.op_apply_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) : ∀ (a : Mᵃᵒᵖ), (AddMonoidHom.op f) a = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) a

def MonoidHom.op {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] : (M →* N) ≃ (Mᵐᵒᵖ →* Nᵐᵒᵖ)

A monoid homomorphism M →* N can equivalently be viewed as a monoid homomorphism Mᵐᵒᵖ →* Nᵐᵒᵖ. This is the action of the (fully faithful) ᵐᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

def AddMonoidHom.unop {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] : (Mᵃᵒᵖ →+ Nᵃᵒᵖ) ≃ (M →+ N)

The 'unopposite' of an additive monoid homomorphism Mᵃᵒᵖ →+ Nᵃᵒᵖ. Inverse to AddMonoidHom.op.

Equations

• AddMonoidHom.unop = AddMonoidHom.op.symm

def MonoidHom.unop {M : Type u_1} {N : Type u_2} [MulOneClass M] [MulOneClass N] : (Mᵐᵒᵖ →* Nᵐᵒᵖ) ≃ (M →* N)

The 'unopposite' of a monoid homomorphism Mᵐᵒᵖ →* Nᵐᵒᵖ. Inverse to MonoidHom.op.

Equations

• MonoidHom.unop = MonoidHom.op.symm

theorem AddEquiv.opOp.proof_2 (M : Type u_1) : Function.RightInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun

theorem AddEquiv.opOp.proof_3 (M : Type u_1) [Add M] : ∀ (x x_1 : M), Equiv.toFun { toFun := (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun, invFun := (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun, left_inv := (_ : Function.LeftInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun), right_inv := (_ : Function.RightInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun) } (x + x_1) = Equiv.toFun { toFun := (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun, invFun := (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun, left_inv := (_ : Function.LeftInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun), right_inv := (_ : Function.RightInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun) } (x + x_1)

theorem AddEquiv.opOp.proof_1 (M : Type u_1) : Function.LeftInverse (AddOpposite.opEquiv.trans AddOpposite.opEquiv).invFun (AddOpposite.opEquiv.trans AddOpposite.opEquiv).toFun

def AddEquiv.opOp (M : Type u_1) [Add M] : M ≃+ Mᵃᵒᵖᵃᵒᵖ

A additive monoid is isomorphic to the opposite of its opposite.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem AddEquiv.opOp_symm_apply (M : Type u_1) [Add M] : ∀ (a : Mᵃᵒᵖᵃᵒᵖ), (AddEquiv.symm (AddEquiv.opOp M)) a = AddOpposite.unop (AddOpposite.unop a)

@[simp]

theorem AddEquiv.opOp_apply (M : Type u_1) [Add M] : ∀ (a : M), (AddEquiv.opOp M) a = AddOpposite.op (AddOpposite.op a)

@[simp]

theorem MulEquiv.opOp_apply (M : Type u_1) [Mul M] : ∀ (a : M), (MulEquiv.opOp M) a = MulOpposite.op (MulOpposite.op a)

@[simp]

theorem MulEquiv.opOp_symm_apply (M : Type u_1) [Mul M] : ∀ (a : Mᵐᵒᵖᵐᵒᵖ), (MulEquiv.symm (MulEquiv.opOp M)) a = MulOpposite.unop (MulOpposite.unop a)

def MulEquiv.opOp (M : Type u_1) [Mul M] : M ≃* Mᵐᵒᵖᵐᵒᵖ

A monoid is isomorphic to the opposite of its opposite.

Equations

• One or more equations did not get rendered due to their size.

@[simp]

theorem AddMonoidHom.mulOp_symm_apply_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : Mᵐᵒᵖ →+ Nᵐᵒᵖ) : ∀ (a : M), (AddMonoidHom.mulOp.symm f) a = (MulOpposite.unop ∘ ⇑f ∘ MulOpposite.op) a

@[simp]

theorem AddMonoidHom.mulOp_apply_apply {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] (f : M →+ N) : ∀ (a : Mᵐᵒᵖ), (AddMonoidHom.mulOp f) a = (MulOpposite.op ∘ ⇑f ∘ MulOpposite.unop) a

def AddMonoidHom.mulOp {M : Type u_1} {N : Type u_2} [AddZeroClass M] [AddZeroClass N] : (M →+ N) ≃ (Mᵐᵒᵖ →+ Nᵐᵒᵖ)

An additive homomorphism M →+ N can equivalently be viewed as an additive homomorphism Mᵐᵒᵖ →+ Nᵐᵒᵖ. This is the action of the (fully faithful) ᵐᵒᵖ-functor on morphisms.

Equations

• One or more equations did not get rendered due to their size.

def AddMonoidHom.mulUnop {α : Type u_1} {β : Type u_2} [AddZeroClass α] [AddZeroClass β] : (αᵐᵒᵖ →+ βᵐᵒᵖ) ≃ (α →+ β)

The 'unopposite' of an additive monoid hom αᵐᵒᵖ →+ βᵐᵒᵖ. Inverse to AddMonoidHom.mul_op.

Equations

• AddMonoidHom.mulUnop = AddMonoidHom.mulOp.symm

@[simp]

theorem AddEquiv.mulOp_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : α ≃+ β) : AddEquiv.mulOp f = AddEquiv.trans (AddEquiv.symm MulOpposite.opAddEquiv) (AddEquiv.trans f MulOpposite.opAddEquiv)

@[simp]

theorem AddEquiv.mulOp_symm_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : αᵐᵒᵖ ≃+ βᵐᵒᵖ) : AddEquiv.mulOp.symm f = AddEquiv.trans MulOpposite.opAddEquiv (AddEquiv.trans f (AddEquiv.symm MulOpposite.opAddEquiv))

def AddEquiv.mulOp {α : Type u_1} {β : Type u_2} [Add α] [Add β] : α ≃+ β ≃ (αᵐᵒᵖ ≃+ βᵐᵒᵖ)

An iso α ≃+ β can equivalently be viewed as an iso αᵐᵒᵖ ≃+ βᵐᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

def AddEquiv.mulUnop {α : Type u_1} {β : Type u_2} [Add α] [Add β] : αᵐᵒᵖ ≃+ βᵐᵒᵖ ≃ (α ≃+ β)

The 'unopposite' of an iso αᵐᵒᵖ ≃+ βᵐᵒᵖ. Inverse to AddEquiv.mul_op.

Equations

• AddEquiv.mulUnop = AddEquiv.mulOp.symm

theorem AddEquiv.op.proof_3 {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : α ≃+ β) (x : αᵃᵒᵖ) (y : αᵃᵒᵖ) : Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } (x + y) = Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } x + Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } y

theorem AddEquiv.op.proof_2 {α : Type u_2} {β : Type u_1} [Add α] [Add β] (f : α ≃+ β) (x : βᵃᵒᵖ) : (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x

theorem AddEquiv.op.proof_8 {α : Type u_2} {β : Type u_1} [Add α] [Add β] : ∀ (x : αᵃᵒᵖ ≃+ βᵃᵒᵖ), (fun (f : α ≃+ β) => { toEquiv := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) }, map_add' := (_ : ∀ (x y : αᵃᵒᵖ), Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } (x + y) = Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } x + Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } y) }) ((fun (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) => { toEquiv := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) }, map_add' := (_ : ∀ (x y : α), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } x + Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } y }) }) x) = (fun (f : α ≃+ β) => { toEquiv := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) }, map_add' := (_ : ∀ (x y : αᵃᵒᵖ), Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } (x + y) = Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } x + Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } y) }) ((fun (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) => { toEquiv := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) }, map_add' := (_ : ∀ (x y : α), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } x + Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } y }) }) x)

theorem AddEquiv.op.proof_7 {α : Type u_2} {β : Type u_1} [Add α] [Add β] : ∀ (x : α ≃+ β), (fun (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) => { toEquiv := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) }, map_add' := (_ : ∀ (x y : α), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } x + Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } y }) }) ((fun (f : α ≃+ β) => { toEquiv := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) }, map_add' := (_ : ∀ (x y : αᵃᵒᵖ), Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } (x + y) = Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } x + Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } y) }) x) = (fun (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) => { toEquiv := { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) }, map_add' := (_ : ∀ (x y : α), AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } x + Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } y }) }) ((fun (f : α ≃+ β) => { toEquiv := { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) }, map_add' := (_ : ∀ (x y : αᵃᵒᵖ), Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } (x + y) = Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } x + Equiv.toFun { toFun := AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop, invFun := AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop, left_inv := (_ : ∀ (x : αᵃᵒᵖ), (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x), right_inv := (_ : ∀ (x : βᵃᵒᵖ), (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) x) = x) } y) }) x)

def AddEquiv.op {α : Type u_1} {β : Type u_2} [Add α] [Add β] : α ≃+ β ≃ (αᵃᵒᵖ ≃+ βᵃᵒᵖ)

An iso α ≃+ β can equivalently be viewed as an iso αᵃᵒᵖ ≃+ βᵃᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

theorem AddEquiv.op.proof_4 {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) (x : α) : AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x

theorem AddEquiv.op.proof_5 {α : Type u_2} {β : Type u_1} [Add α] [Add β] (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) (x : β) : AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x

theorem AddEquiv.op.proof_1 {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : α ≃+ β) (x : αᵃᵒᵖ) : (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) ((AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) x) = x

theorem AddEquiv.op.proof_6 {α : Type u_2} {β : Type u_1} [Add α] [Add β] (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) (x : α) (y : α) : AddOpposite.unop { unop' := (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) (x + y) } = AddOpposite.unop { unop' := Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } x + Equiv.toFun { toFun := AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op, invFun := AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op, left_inv := (_ : ∀ (x : α), AddOpposite.unop ((AddEquiv.symm f) (f (AddOpposite.op x))) = x), right_inv := (_ : ∀ (x : β), AddOpposite.unop (f ((AddEquiv.symm f) (AddOpposite.op x))) = x) } y }

@[simp]

theorem MulEquiv.op_symm_apply_apply {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] (f : αᵐᵒᵖ ≃* βᵐᵒᵖ) : ∀ (a : α), (MulEquiv.op.symm f) a = (MulOpposite.unop ∘ ⇑f ∘ MulOpposite.op) a

@[simp]

theorem MulEquiv.op_apply_apply {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] (f : α ≃* β) : ∀ (a : αᵐᵒᵖ), (MulEquiv.op f) a = (MulOpposite.op ∘ ⇑f ∘ MulOpposite.unop) a

@[simp]

theorem AddEquiv.op_symm_apply_symm_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) : ∀ (a : β), (AddEquiv.symm (AddEquiv.op.symm f)) a = (AddOpposite.unop ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.op) a

@[simp]

theorem AddEquiv.op_apply_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : α ≃+ β) : ∀ (a : αᵃᵒᵖ), (AddEquiv.op f) a = (AddOpposite.op ∘ ⇑f ∘ AddOpposite.unop) a

@[simp]

theorem MulEquiv.op_apply_symm_apply {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] (f : α ≃* β) : ∀ (a : βᵐᵒᵖ), (MulEquiv.symm (MulEquiv.op f)) a = (MulOpposite.op ∘ ⇑(MulEquiv.symm f) ∘ MulOpposite.unop) a

@[simp]

theorem MulEquiv.op_symm_apply_symm_apply {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] (f : αᵐᵒᵖ ≃* βᵐᵒᵖ) : ∀ (a : β), (MulEquiv.symm (MulEquiv.op.symm f)) a = (MulOpposite.unop ∘ ⇑(MulEquiv.symm f) ∘ MulOpposite.op) a

@[simp]

theorem AddEquiv.op_apply_symm_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : α ≃+ β) : ∀ (a : βᵃᵒᵖ), (AddEquiv.symm (AddEquiv.op f)) a = (AddOpposite.op ∘ ⇑(AddEquiv.symm f) ∘ AddOpposite.unop) a

@[simp]

theorem AddEquiv.op_symm_apply_apply {α : Type u_1} {β : Type u_2} [Add α] [Add β] (f : αᵃᵒᵖ ≃+ βᵃᵒᵖ) : ∀ (a : α), (AddEquiv.op.symm f) a = (AddOpposite.unop ∘ ⇑f ∘ AddOpposite.op) a

def MulEquiv.op {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] : α ≃* β ≃ (αᵐᵒᵖ ≃* βᵐᵒᵖ)

An iso α ≃* β can equivalently be viewed as an iso αᵐᵒᵖ ≃* βᵐᵒᵖ.

Equations

• One or more equations did not get rendered due to their size.

def AddEquiv.unop {α : Type u_1} {β : Type u_2} [Add α] [Add β] : αᵃᵒᵖ ≃+ βᵃᵒᵖ ≃ (α ≃+ β)

The 'unopposite' of an iso αᵃᵒᵖ ≃+ βᵃᵒᵖ. Inverse to AddEquiv.op.

Equations

• AddEquiv.unop = AddEquiv.op.symm

def MulEquiv.unop {α : Type u_1} {β : Type u_2} [Mul α] [Mul β] : αᵐᵒᵖ ≃* βᵐᵒᵖ ≃ (α ≃* β)

The 'unopposite' of an iso αᵐᵒᵖ ≃* βᵐᵒᵖ. Inverse to MulEquiv.op.

Equations

• MulEquiv.unop = MulEquiv.op.symm

theorem AddMonoidHom.mul_op_ext {α : Type u_1} {β : Type u_2} [AddZeroClass α] [AddZeroClass β] (f : αᵐᵒᵖ →+ β) (g : αᵐᵒᵖ →+ β) (h : AddMonoidHom.comp f (AddEquiv.toAddMonoidHom MulOpposite.opAddEquiv) = AddMonoidHom.comp g (AddEquiv.toAddMonoidHom MulOpposite.opAddEquiv)) : f = g

This ext lemma changes equalities on αᵐᵒᵖ →+ β to equalities on α →+ β. This is useful because there are often ext lemmas for specific αs that will apply to an equality of α →+ β such as Finsupp.addHom_ext'.