Over a ring `S` complete for an ideal `I`, any ring map `O' → S` extends to an evaluation `O'[[T,X]] → S` sending `T ↦ e` and `X ↦ z` for given `e, z ∈ I`.
ProvedTypeDensity.twoSeries_eval_exists_of_isAdicCompletetype-density
Over a ring S complete for an ideal I, any ring map O' → S extends to an evaluation O'[[T,X]] → S sending T ↦ e and X ↦ z for given e, z ∈ I.
Preamble
import Definitions.Def_TypeDensity_Basic import Definitions.Def_TypeDensity_Formula_LawAlgebra import Definitions.Def_TypeDensity_Measure_AdicCylinders import Definitions.Def_TypeDensity_Measure_HenselProducts import Definitions.Def_TypeDensity_Surfaces_Lengths import Definitions.Def_TypeDensity_Surfaces_PowerSeries import Definitions.Def_TypeDensity_Algebra_AlgebraType import Definitions.Def_TypeDensity_Unramified_Extension import Definitions.Def_TypeDensity_Measure_PrimitiveLocus import Definitions.Def_TypeDensity_Algebra_FactorInvariant import Theorems.Thm_TypeDensity_twoSeries_ringHom_ext_of_isNilpotent import Theorems.Thm_TypeDensity_nilpotentEval_apply_generators 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.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.SimpleRing.Principal import Mathlib.FieldTheory.Finite.Extension import Mathlib.RingTheory.AdicCompletion.Noetherian import Mathlib.RingTheory.MvPowerSeries.Equiv import Mathlib.RingTheory.PicardGroup import Mathlib.Algebra.GroupWithZero.Submonoid.CancelMulZero import Mathlib.Algebra.Module.StablyFree.Basic import Mathlib.NumberTheory.Padics.RingHoms import Mathlib.Algebra.Azumaya.Basic import Mathlib.RingTheory.AdicCompletion.Completeness import Mathlib.RingTheory.AdicCompletion.RingHom import Mathlib.RingTheory.TotallySplit set_option autoImplicit false open TypeDensity
Formal statement
theorem TypeDensity.twoSeries_eval_exists_of_isAdicComplete (S : Type) [CommRing S] (I : Ideal S)
[IsAdicComplete I S] (O' : Type) [CommRing O'] (κ : O' →+* S) (e z : S) (he : e ∈ I)
(hz : z ∈ I) :
∃ Θ : TwoSeries O' →+* S,
(∀ c : O', Θ (MvPowerSeries.C c) = κ c) ∧ Θ (axisT O') = e ∧ Θ (axisX O') = z := by sorrySource
TypeDensity/Surfaces/Completeness.lean#L214-L249