The level-`j` quotient of curve sections is additively isomorphic to the product of the local level quotients at all points, compatibly with `sectionsToProduct`.
ProvedTypeDensity.curve_sections_quot_equiv_producttype-density
The level-j quotient of curve sections is additively isomorphic to the product of the local level quotients at all points, compatibly with sectionsToProduct.
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_Formula_FiniteFieldCounts import Definitions.Def_TypeDensity_Formula_StateCombinatorics import Definitions.Def_TypeDensity_Blowup_Directions 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 Theorems.Thm_TypeDensity_curve_ideal_lattice_eq_kernels import Theorems.Thm_TypeDensity_finite_support_quotient_surjective_of_isPrime import Theorems.Thm_TypeDensity_two_chart_left_data_transverse_finite import Theorems.Thm_TypeDensity_two_chart_left_points_maximal import Theorems.Thm_TypeDensity_two_chart_right_data_transverse_finite import Theorems.Thm_TypeDensity_rightLevelIdeal_map_rightIso_symm import Theorems.Thm_TypeDensity_two_chart_kernels_agree_on_overlap import Theorems.Thm_TypeDensity_two_chart_right_points_maximal 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.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 set_option autoImplicit false open TypeDensity
Formal statement
theorem TypeDensity.curve_sections_quot_equiv_product (R : Type) [CommRing R] (t x : R)
[(Ideal.span ({t,x} : Set R)).IsMaximal] [IsNoetherianRing (BlowupChart R t x)]
[IsNoetherianRing (BlowupChart R x t)] (beta : BlowupRestriction R t x) (D : TwoChartCurveData R
t x beta) (d : ℕ) (G : GluedGenerators R t x beta d) (hG : ∀ j : ℕ,
Ideal.span {Ideal.Quotient.mk ((chartExceptional R t x)^j) (G.left j)} = leftLevelKernel D j ∧
Ideal.span {Ideal.Quotient.mk ((chartExceptional R x t)^j) (G.right j)} = rightLevelKernel D j)
(j : ℕ) :
∃ E : curveSectionsQuot R t x beta G j ≃+ curveProduct D j, ∀ q : curveSectionsQuot R t x beta G
j, ∀ p : BlowupChart R t x × BlowupChart R x t,
(q : (BlowupChart R t x × BlowupChart R x t) ⧸ curveIdealLattice R t x beta G j) =
(curveIdealLattice R t x beta G j).mkQ p → E q = sectionsToProduct D j p := by sorrySource
TypeDensity/Blowup/TwoChartCurveData.lean#L346-L447