Translating the strict-transform chart computation: the preimage of a set of chart coordinates under the strict transform on the ball of radius `|pi|^(s+a-1)` has measure `q⁻¹^(tri d)` times that of i
ProvedTypeDensity.strict_transform_translate_measuretype-density
Translating the strict-transform chart computation: the preimage of a set of chart coordinates under the strict transform on the ball of radius |pi|^(s+a-1) has measure q⁻¹^(tri d) times that of its image under the coordinate ideal map.
Preamble
import Definitions.Def_TypeDensity_Basic import Definitions.Def_TypeDensity_Blowup_Directions import Definitions.Def_TypeDensity_Measure_AdicCylinders import Definitions.Def_TypeDensity_Formula_LawAlgebra import Definitions.Def_TypeDensity_Measure_HenselProducts import Definitions.Def_TypeDensity_Surfaces_Lengths import Definitions.Def_TypeDensity_Surfaces_PowerSeries import Definitions.Def_TypeDensity_Formula_FiniteFieldCounts import Definitions.Def_TypeDensity_Formula_StateCombinatorics import Definitions.Def_TypeDensity_Formula_PatternCounts import Definitions.Def_TypeDensity_Unramified_Extension import Definitions.Def_TypeDensity_Blowup_Charts import Definitions.Def_TypeDensity_Algebra_AlgebraType import Definitions.Def_TypeDensity_Measure_PrimitiveLocus import Definitions.Def_TypeDensity_Algebra_FactorInvariant import Definitions.Def_TypeDensity_Surfaces_TruncatedSeries import Definitions.Def_TypeDensity_Blowup_TwoChartCurveData import Definitions.Def_TypeDensity_Surfaces_ConcreteAtlas import Definitions.Def_TypeDensity_Recursion_Members import Definitions.Def_TypeDensity_Measure_MemberCharts import Definitions.Def_TypeDensity_Recursion_Termination import Definitions.Def_TypeDensity_Recursion_OrderDefect import Definitions.Def_TypeDensity_Assembly_NullBridges import Theorems.Thm_TypeDensity_strict_chart_one_ball_measure import Theorems.Thm_TypeDensity_strict_chart_coordinates_commute import Theorems.Thm_TypeDensity_strict_chart_preimage_set_identity 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.FieldTheory.Finite.GaloisField import Mathlib.RingTheory.AdicCompletion.Algebra import Mathlib.RingTheory.RegularLocalRing.Defs 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.FieldTheory.RatFunc.AsPolynomial import Mathlib.RingTheory.AdicCompletion.Completeness 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.RingHom import Mathlib.RingTheory.TotallySplit import Mathlib.RingTheory.AdicCompletion.LocalRing import Mathlib.RingTheory.KrullDimension.NonZeroDivisors import Mathlib.Algebra.Group.NatPowAssoc import Mathlib.Algebra.Order.Ring.Star import Mathlib.Data.Int.Star import Mathlib.LinearAlgebra.Dimension.Torsion.Finite set_option autoImplicit false open TypeDensity open scoped BigOperators ENNReal
Formal statement
theorem TypeDensity.strict_transform_translate_measure (O R C : Type) [CommRing O] [CommRing R] [CommRing C]
[Algebra O R] [Algebra O C] (n : ℕ) (pi : O) (s a d : ℕ) (alpha : R →ₐ[O] C) (f : R)
(g e c : C) (b : Fin n → R) (hf : alpha f = e ^ d * g)
(hpi : (algebraMap O C pi) ^ s = e ^ d * c)
(he : Function.Injective (fun z : C => e*z)) (ha : 0 < a)
(hjac : algebraMap O C pi ∈ Ideal.jacobson (⊥ : Ideal C)) (bc : Fin n → C)
(E : C ≃ₗ[O] ((Fin n → O) × C)) (hE : ∀ w, E.symm w = divisionMap g bc w)
[IsAdicComplete (Ideal.span {pi}) ((Fin n → O) × C)]
(hΨ : Function.Injective (coordinateIdeal pi g bc)) (k : ℕ) (hk : k < a)
(Q : (Fin n → O) →ₗ[O] (Fin n → O))
(hQ : ∀ w, normalizationLinearPart E (pulledVariation alpha c b) (Q w) = (pi^k) • w)
(hD : Function.Injective (normalizationLinearPart E (pulledVariation alpha c b)))
[IsDomain O] [IsDiscreteValuationRing O] [Finite (IsLocalRing.ResidueField O)]
(hpiO : Irreducible pi)
(hkl : Module.length O ((Fin n → O) ⧸
LinearMap.range (normalizationLinearPart E (pulledVariation alpha c b))) = k)
[IsAdicComplete (Ideal.span {pi}) (Fin n → O)] [TopologicalSpace (Fin n → O)]
[IsTopologicalAddGroup (Fin n → O)] [CompactSpace (Fin n → O)] [T2Space (Fin n → O)]
[MeasurableSpace (Fin n → O)] [BorelSpace (Fin n → O)] [MeasurableAdd (Fin n → O)]
(hgen : ‹MeasurableSpace (Fin n → O)› = adicCylinderSpace (Ideal.span {pi}) (Fin n → O))
(mu : MeasureTheory.Measure (Fin n → O)) [MeasureTheory.IsProbabilityMeasure mu]
[MeasureTheory.Measure.IsAddHaarMeasure mu]
(hfinite : ∀ j, Finite (AdicQuotient (Ideal.span {pi}) (Fin n → O) j))
(hcont : Continuous (fun z : Fin n → O =>
(pi^a) • normalizationLinearPart E (pulledVariation alpha c b) z))
(hscale : ∀ (m : ℕ) (S : Set (Fin n → O)), MeasurableSet S →
mu ((fun w : Fin n → O => (pi^m) • w) '' S) =
(Nat.card (IsLocalRing.ResidueField O) : ℝ≥0∞)⁻¹^(m*n) * mu S)
(htri : tri d ≤ s*n) (hkd : k = s*n - tri d) (T : Set (Fin n → O)) (hT : MeasurableSet T) :
mu (coordinateIdeal pi f b ⁻¹' (strictTransformIdeal alpha e d ⁻¹'
(coordinateIdeal pi g bc '' T)) ∩ Set.range (coordinateScale pi (s+a-1))) =
(Nat.card (IsLocalRing.ResidueField O) : ℝ≥0∞)⁻¹^(tri d) *
mu (coordinateIdeal pi g bc ⁻¹' (coordinateIdeal pi g bc '' T ∩
strictTransformIdeal alpha e d ''
(coordinateIdeal pi f b '' Set.range (coordinateScale pi (s+a-1))))) := by sorrySource
TypeDensity/Assembly/NullBridges.lean#L275-L329