OAI/Algebra/Finitistic/Iteration/IntegerIterateAmplitude.lean
6 declarations, 0 contain sorry, 0 declared as axioms
- abbrev
OAI.DerivedBar.IterateSupport.resolvedModelline 17 - theorem
OAI.DerivedBar.IterateSupport.tensor_exact_aboveline 23Source documentation
A bounded input remains cohomologically bounded after actual derived tensor. The input is resolved by its genuine projective bar total.
theorem tensor_exact_above (Z : ChainComplex (ModuleCat.{u} D) ℕ) (m : ℕ) (hZ : ∀ i, m < i → Z.ExactAt i) (n : ℕ) (hn : m+g+2 < n) : ((tensorTotalFunctor k D X).obj Z).ExactAt n := by …Mentions: OAI.DerivedBar.tensorTotalFunctor
- theorem
OAI.DerivedBar.IterateSupport.resolvedModel_exact_aboveline 37Source documentation
The actual finite iteration has an explicit finite homological support bound. This bound has a two-degree allowance per step; no optimal upper bound is claimed.
theorem resolvedModel_exact_above (r n : ℕ) (hn : r*(g+2) < n) : (resolvedModel k D X N r).ExactAt n := by … - def
OAI.DerivedBar.IterateSupport.resolvedModelIsoline 48 - theorem
OAI.DerivedBar.IterateSupport.isGE_boundline 57Source documentation
Actual derived tensor iterates have finite lower cohomological support over any ring with the supplied genuine global projective-dimension bound.
theorem isGE_bound (r : ℕ) : (object k D X N r).IsGE (-((r*(g+2) : ℕ) : ℤ)) := by …
Mentions: OAI.DerivedBar.IterateSupport.object
- theorem
OAI.DerivedBar.IterateSupport.bounded_amplitudeline 71