Uniform support bounds for the actual standard-form graded modules #
theorem
MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGradedObject_component_eq_bot
{k A : Type u}
[Field k]
[IsAlgClosed k]
[Ring A]
[Algebra k A]
[FiniteDimensional k A]
[IsNoetherianRing Aᵐᵒᵖ]
(S : FiniteIndecomposableSkeleton k A)
(d : ℤ)
(hd : ∀ (X Y : S.StandardFormMeshCategory), S.standardFormIntegerHomGrading.component X Y d = ⊥)
(X : CategoryTheory.Mat_ S.StandardFormMeshCategory)
:
(S.standardFormGradedObject ⋯ X).grading.component d = ⊥
A vanishing mesh degree also vanishes in every represented graded module.
theorem
MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormGraded_support_bound
{k A : Type u}
[Field k]
[IsAlgClosed k]
[Ring A]
[Algebra k A]
[FiniteDimensional k A]
[IsNoetherianRing Aᵐᵒᵖ]
(S : FiniteIndecomposableSkeleton k A)
:
∃ (h : ℕ),
1 ≤ h ∧ ∀ (X : S.StandardFormMeshCategory), ∀ d ∈ (S.standardFormGradedVertex ⋯ X).grading.support, 0 ≤ d ∧ d ≤ ↑h
A single positive bound contains the support of every standard-form graded vertex.