Theorem: Algebra.algebraMap_intNorm_fractionRing
File: Mathlib/RingTheory/IntegralRestrict.lean

tactic: haveI : IsIntegralClosure B A (FractionRing B) :=
  IsIntegralClosure.of_isIntegrallyClosed _ _ _
state_before: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)
state_after: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this : IsIntegralClosure B A (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)

tactic: haveI : IsLocalization (algebraMapSubmonoid B A⁰) (FractionRing B) :=
  IsIntegralClosure.isLocalization _ (FractionRing A) _ _
state_before: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this : IsIntegralClosure B A (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)
state_after: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this✝ : IsIntegralClosure B A (FractionRing B)
this : IsLocalization (algebraMapSubmonoid B A⁰) (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)

tactic: haveI : FiniteDimensional (FractionRing A) (FractionRing B) :=
  Module.Finite_of_isLocalization A B _ _ A⁰
state_before: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this✝ : IsIntegralClosure B A (FractionRing B)
this : IsLocalization (algebraMapSubmonoid B A⁰) (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)
state_after: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this✝¹ : IsIntegralClosure B A (FractionRing B)
this✝ : IsLocalization (algebraMapSubmonoid B A⁰) (FractionRing B)
this : FiniteDimensional (FractionRing A) (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)

tactic: exact Algebra.map_intNormAux x
state_before: A : Type u_1
K : Type u_2
L : Type u_3
B : Type u_4
inst✝³¹ : CommRing A
inst✝³⁰ : CommRing B
inst✝²⁹ : Algebra A B
inst✝²⁸ : Field K
inst✝²⁷ : Field L
inst✝²⁶ : Algebra A K
inst✝²⁵ : IsFractionRing A K
inst✝²⁴ : Algebra B L
inst✝²³ : Algebra K L
inst✝²² : Algebra A L
inst✝²¹ : IsScalarTower A B L
inst✝²⁰ : IsScalarTower A K L
inst✝¹⁹ : IsIntegralClosure B A L
inst✝¹⁸ : FiniteDimensional K L
Aₘ : Type ?u.538547
Bₘ : Type ?u.538550
inst✝¹⁷ : CommRing Aₘ
inst✝¹⁶ : CommRing Bₘ
inst✝¹⁵ : Algebra Aₘ Bₘ
inst✝¹⁴ : Algebra A Aₘ
inst✝¹³ : Algebra B Bₘ
inst✝¹² : Algebra A Bₘ
inst✝¹¹ : IsScalarTower A Aₘ Bₘ
inst✝¹⁰ : IsScalarTower A B Bₘ
M : Submonoid A
inst✝⁹ : IsLocalization M Aₘ
inst✝⁸ : IsLocalization (algebraMapSubmonoid B M) Bₘ
inst✝⁷ : IsIntegrallyClosed A
inst✝⁶ : IsDomain A
inst✝⁵ : IsIntegrallyClosed A
inst✝⁴ : IsDomain B
inst✝³ : IsIntegrallyClosed B
inst✝² : Module.Finite A B
inst✝¹ : NoZeroSMulDivisors A B
inst✝ : IsSeparable (FractionRing A) (FractionRing B)
x : B
this✝¹ : IsIntegralClosure B A (FractionRing B)
this✝ : IsLocalization (algebraMapSubmonoid B A⁰) (FractionRing B)
this : FiniteDimensional (FractionRing A) (FractionRing B)
⊢ (algebraMap A (FractionRing A)) ((intNorm A B) x) = (norm (FractionRing A)) ((algebraMap B (FractionRing B)) x)
state_after: no goals