Module

Place_kaehlerD_ne_zero_of_ord_eq_one.lean

Nyll.AlgebraicCurves.Places.Place_kaehlerD_ne_zero_of_ord_eq_one
1 declaration indexed from sourceView source ↗

Place kaehler D ne zero of ord eq one

Declarations

AlgebraicCurve.Place.kaehlerD_ne_zero_of_ord_eq_one
Source context 4 commands

Surrounding namespaces, section variables, and local commands at this declaration.

section ProofImplementation
namespace AlgebraicCurves.Places.Proofs.Place_kaehlerD_ne_zero_of_ord_eq_one
attribute [-instance]
  instIsPrimeCenter
  instIsFractionRingIntegralClosureAt
  instIsTorsionFreeSubtypeMemValuationSubringToValuationSubringIntegralClosureAt
  instIsDedekindDomainIntegralClosureAt
  instFiniteSubtypeMemValuationSubringToValuationSubringIntegralClosureAt
  AlgebraicCurve.instFundamentalIdentityOfSumRamificationInertia
  instIsScalarTowerResidueFieldRestrictPushforward
  instAlgebraResidueFieldRestrictPushforward
  instIsLocalHomRestrictInclusion
attribute [-simp] AlgebraicCurve.Place.placeOfPrime_toValuationSubring
  AlgebraicCurve.Place.mem_fiberOver AlgebraicCurve.Place.fiberEquiv_symm_apply
  AlgebraicCurve.Place.fiberEquiv_apply AlgebraicCurve.Place.centerHeightOneSpectrum_asIdeal
  AlgebraicCurve.Divisor.mapRestrict_single AlgebraicCurve.Divisor.pushforward_single
  AlgebraicCurve.Place.coe_restrictInclusion AlgebraicCurve.Place.mem_fiber
  AlgebraicCurve.Place.restrict_toValuationSubring AlgebraicCurve.Divisor.degree_pushforward
  AlgebraicCurve.Place.restrictResidueMap_residue AlgebraicCurve.Pic0.coe_pushforwardDegZeroHom
  AlgebraicCurve.Pic0.coe_pullbackDegZeroHom
theorem _root_.AlgebraicCurve.Place.kaehlerD_ne_zero_of_ord_eq_one {K F : Type*} [Field K] [Field
  F] [Algebra K F] [PerfectField K] (x : F)
    [Algebra.IsAlgebraic (IntermediateField.adjoin K ({x} : Set F)) F] (v : AlgebraicCurve.Place K
      F) {t : F} (ht : v.ord t = 1) :
    KaehlerDifferential.D K F t ≠ 0