Intrinsic radical squares at interior interval targets #
theorem
MagnitudeConjecture.RightModule.FiniteIndecomposableSkeleton.standardFormSupported_interior_radicalSquare_iff
{k A : Type u}
[Field k]
[IsAlgClosed k]
[Ring A]
[Algebra k A]
[FiniteDimensional k A]
[IsNoetherianRing Aᵐᵒᵖ]
(S : FiniteIndecomposableSkeleton k A)
{m : ℕ}
(a b : S.standardFormSupportedLabel m)
(ht0 : 0 ≤ ↑b.snd)
(htm : ↑b.snd ≤ ↑m - 2 * ↑S.standardFormIntervalControlHeight)
(f : S.standardFormSupportedFamily m a ⟶ S.standardFormSupportedFamily m b)
:
f.hom ∈ (QuotientSubmoduleEquidistribution.CategoricalRadical.homIdeal ⋆ᵢ QuotientSubmoduleEquidistribution.CategoricalRadical.homIdeal).hom
(S.standardFormSupportedFamily m a).obj (S.standardFormSupportedFamily m b).obj ↔ f ∈ (QuotientSubmoduleEquidistribution.CategoricalRadical.homIdeal ⋆ᵢ QuotientSubmoduleEquidistribution.CategoricalRadical.homIdeal).hom
(S.standardFormSupportedFamily m a) (S.standardFormSupportedFamily m b)
At an interior target, restriction preserves and reflects membership in the square of the intrinsic categorical radical.