If `F` vanishes on the axis `X_t`, then `ℓ(k⟦T, X⟧ ⧸ (F, X_s)) = ⊤`.
ProvedTypeDensity.axisQuotientLength_eq_toptype-density
If F vanishes on the axis X_t, then ℓ(k⟦T, X⟧ ⧸ (F, X_s)) = ⊤.
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_Surfaces_TruncatedSeries import Theorems.Thm_TypeDensity_axis_quotient_length_top 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 set_option autoImplicit false open TypeDensity
Formal statement
theorem TypeDensity.axisQuotientLength_eq_top (k : Type) [Field k] {s t : Fin 2} (hst : s ≠ t)
(F : TwoSeries k)
(h : ∀ j, MvPowerSeries.coeff (Finsupp.single t j) F = 0) : axisQuotientLength k s F = ⊤ := by sorrySource
TypeDensity/Surfaces/TruncatedSeries.lean#L68-L77