A squarefree monic polynomial whose irreducible factors have finite closures has a type.
ProvedTypeDensity.squarefree_monic_has_polynomial_typetype-density
A squarefree monic polynomial whose irreducible factors have finite closures has a type.
Preamble
import Definitions.Def_TypeDensity_Basic import Definitions.Def_TypeDensity_Formula_LawAlgebra import Definitions.Def_TypeDensity_Algebra_AlgebraType import Mathlib.FieldTheory.RatFunc.Basic import Mathlib.MeasureTheory.Measure.Haar.Unique import Mathlib.NumberTheory.ArithmeticFunction.Moebius import Mathlib.NumberTheory.Padics.PadicIntegers import Mathlib.RingTheory.IntegralClosure.IntegralRestrict import Mathlib.RingTheory.MvPowerSeries.Basic import Mathlib.RingTheory.RamificationInertia.Basic import Mathlib.Topology.Algebra.Nonarchimedean.AdicTopology import Mathlib.FieldTheory.Finite.GaloisField import Mathlib.RingTheory.AdicCompletion.Algebra import Mathlib.RingTheory.RegularLocalRing.Defs import Mathlib.RingTheory.Henselian set_option autoImplicit false open TypeDensity open scoped TensorProduct open Polynomial IsLocalRing open UniqueFactorizationMonoid open scoped Classical
Formal statement
theorem TypeDensity.squarefree_monic_has_polynomial_type (O : Type) [CommRing O] [IsDomain O]
(F : Polynomial (BaseField O)) (hF : F.Monic) (hsq : Squarefree F)
(hfin : ∀ g ∈ normalizedFactors F, Module.Finite O (integralClosure O (AdjoinRoot g))) :
∃ σ : FactorType, HasPolynomialTypeF O F σ := by sorrySource
TypeDensity/Algebra/AlgebraType.lean#L364-L384