instAdditiveOppositeShiftShiftFunctor

English

The hom component of shiftFunctorZero on the opposite shift relates to the inverse on X.unop via op.

Русский

Гомкомпонента shiftFunctorZero на противоположном сдвиге relates к обратному через op.

LaTeX

$$$ (shiftFunctorZero (OppositeShift C A)\; A).hom.app X = ((shiftFunctorZero C A).inv.app X.unop).op $$$

Lean4

instance [Preadditive C] (n : A) [(shiftFunctor C n).Additive] : (shiftFunctor (OppositeShift C A) n).Additive :=
  by
  change (shiftFunctor C n).op.Additive
  infer_instance

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