A residue cell is a congruence class modulo `m` around any of its points;
ProvedTypeDensity.residue_cell_cylindertype-density
A residue cell is a congruence class modulo m around any of its points; it is nonempty iff G is monic of degree n.
Preamble
import Definitions.Def_TypeDensity_Basic import Definitions.Def_TypeDensity_Formula_LawAlgebra import Definitions.Def_TypeDensity_Algebra_AlgebraType import Definitions.Def_TypeDensity_Measure_AdicCylinders import Definitions.Def_TypeDensity_Measure_HenselProducts import Definitions.Def_TypeDensity_Unramified_Extension import Definitions.Def_TypeDensity_Measure_PrimitiveLocus import Definitions.Def_TypeDensity_Algebra_FactorInvariant import Theorems.Thm_TypeDensity_monic_poly_reconstruct import Theorems.Thm_TypeDensity_polynomial_congruence_and_product 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 import Mathlib.Topology.Algebra.MvPolynomial import Mathlib.Algebra.Group.Pi.Units import Mathlib.Order.CompletePartialOrder import Mathlib.RingTheory.Polynomial.Resultant.Basic import Mathlib.RingTheory.SimpleRing.Principal import Mathlib.Algebra.GroupWithZero.Submonoid.CancelMulZero import Mathlib.Algebra.Module.StablyFree.Basic import Mathlib.NumberTheory.Padics.RingHoms set_option autoImplicit false open TypeDensity open scoped ENNReal
Formal statement
theorem TypeDensity.residue_cell_cylinder (O : Type) [CommRing O] [IsLocalRing O] (n : ℕ)
(G : Polynomial (IsLocalRing.ResidueField O)) :
(∀ a ∈ residueCell O n G, residueCell O n G =
{b | ∀ i, b i - a i ∈ IsLocalRing.maximalIdeal O}) ∧
(G.Monic → G.natDegree = n → (residueCell O n G).Nonempty) ∧
((residueCell O n G).Nonempty → G.Monic ∧ G.natDegree = n) := by sorrySource
TypeDensity/Unramified/PolynomialTypes.lean#L794-L835