Magnitude conjecture

MagnitudeConjecture.Algebra.RightModuleStandardGradedRepresentatives

Underlying representatives of the standard-form graded modules #

@[instance_reducible]
def MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.rdGradedRepresentativesQuiver {k A : Type u} [Field k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) :
Quiver (Fin S.n)
Instances For
    @[instance_reducible]
    noncomputable def MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.rdGradedRepresentativesArrowFintype {k A : Type u} [Field k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (x y : Fin S.n) :
    Fintype (x ⟶ y)
    Instances For
      noncomputable def MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedObjectUnderlyingIso {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (X : CategoryTheory.Mat_ S.StandardFormMeshCategory) :

      Forgetting the grading recovers the existing represented right module.

      Instances For
        noncomputable def MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedFamily {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (i : Fin S.n) :

        The graded representatives, with the labels of the original finite skeleton.

        Instances For
          noncomputable def MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedFamilyIso {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (i : Fin S.n) :

          The underlying graded representatives are the existing algebra skeleton.

          Instances For
            theorem MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedFamily_indecomposable {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (i : Fin S.n) :
            CategoryTheory.Indecomposable (S.standardFormGradedFamily i).module

            Each graded representative is indecomposable after forgetting its grading.

            theorem MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedFamily_complete {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (M : Category (S.standardFormAlgebra ⋯)) (hfin : Module.Finite k ↑M) (hM : CategoryTheory.Indecomposable M) :
            ∃ (i : Fin S.n), Nonempty (M ≅ (S.standardFormGradedFamily i).module)

            Every finite ungraded indecomposable has one of these gradings.

            theorem MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedFamily_skeletal {k A : Type u} [Field k] [IsAlgClosed k] [Ring A] [Algebra k A] [FiniteDimensional k A] [IsNoetherianRing Aᵐᵒᵖ] (S : FiniteIndecomposableSkeleton k A) (i j : Fin S.n) (h : Nonempty ((S.standardFormGradedFamily i).module ≅ (S.standardFormGradedFamily j).module)) :
            i = j

            The underlying representatives have no duplicate labels.