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Mathlib.CategoryTheory.Center.Preadditive

The center of an additive category #

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@[simp]
theorem CategoryTheory.CatCenter.app_add {C : Type u} [Category.{v, u} C] [Preadditive C] (z₁ z₂ : CatCenter C) (X : C) :
(z₁ + z₂).app X = z₁.app X + z₂.app X
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@[simp]
theorem CategoryTheory.CatCenter.app_sub {C : Type u} [Category.{v, u} C] [Preadditive C] (z₁ z₂ : CatCenter C) (X : C) :
(z₁ - z₂).app X = z₁.app X - z₂.app X
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@[simp]
theorem CategoryTheory.CatCenter.app_neg {C : Type u} [Category.{v, u} C] [Preadditive C] (z : CatCenter C) (X : C) :
(-z).app X = -z.app X