Over a local ring, a factorization into monic factors with pairwise coprime reductions is determined by the reductions.
ProvedTypeDensity.hensel_family_uniquetype-density
Over a local ring, a factorization into monic factors with pairwise coprime reductions is determined by the reductions.
Preamble
import Definitions.Def_TypeDensity_Basic import Definitions.Def_TypeDensity_Measure_AdicCylinders import Definitions.Def_TypeDensity_Measure_HenselProducts import Definitions.Def_TypeDensity_Unramified_Extension import Theorems.Thm_TypeDensity_hensel_pair_unique 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.Topology.Algebra.MvPolynomial import Mathlib.Algebra.Group.Pi.Units import Mathlib.Order.CompletePartialOrder import Mathlib.RingTheory.Henselian import Mathlib.RingTheory.Polynomial.Resultant.Basic import Mathlib.RingTheory.RegularLocalRing.Defs import Mathlib.RingTheory.SimpleRing.Principal set_option autoImplicit false open TypeDensity open Polynomial IsLocalRing MeasureTheory
Formal statement
theorem TypeDensity.hensel_family_unique (O ι : Type) [CommRing O] [IsLocalRing O] [Fintype ι]
(G G' : ι → Polynomial O) (hG : ∀ i, (G i).Monic) (hG' : ∀ i, (G' i).Monic)
(hred : ∀ i, (G i).map (IsLocalRing.residue O) = (G' i).map (IsLocalRing.residue O))
(hc : ∀ i j, i ≠ j → IsCoprime ((G i).map (IsLocalRing.residue O))
((G j).map (IsLocalRing.residue O))) (hp : ∏ i, G i = ∏ i, G' i) :
G = G' := by sorrySource
TypeDensity/Unramified/Extension.lean#L970-L1001