OAI/Algebra/Finitistic/Selected/SelectedCountPDConsumer.lean

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1 declarations, 0 contain sorry, 0 declared as axioms

  1. theorem OAI.LittleFinitistic.SelectedPDDetection.lower_bound_of_surviving_count line 16

    Source documentation

    A supplied inclusion/retraction of the original count summand into the actual full bar converts native iterate survival directly into the pd bound. Native supplies the proved nonzero degree; no shift/amplitude proof is duplicated.

    theorem lower_bound_of_surviving_count (Y : FiniteSelectionFamily.S.{0}) (r : ℕ)
        (h : ¬ IsZero (SelectedBaseIterates.object Y r))
        (i : SelectedCountCohomology.count Y r ⟶ PDBarQuotient.baseDerived augmentation (Inflated Y))
        (p : PDBarQuotient.baseDerived augmentation (Inflated Y) ⟶ SelectedCountCohomology.count Y r)
        (hip : i ≫ p = 𝟙 (SelectedCountCohomology.count Y r)) :
        r ≤ projectiveDimension (module Y) := by
    …

    Mentions: OAI.LittleFinitistic.SelectedBaseIterates.object, OAI.LittleFinitistic.SelectedCountCohomology.count, OAI.LittleFinitistic.PDBarQuotient.baseDerived