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Mathlib.Algebra.Category.Grp.Preadditive

The category of additive commutative groups is preadditive. #

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    @[simp]
    theorem AddCommGrpCat.hom_add {M N : AddCommGrpCat} (f g : M N) :
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      @[simp]
      theorem AddCommGrpCat.hom_nsmul {M N : AddCommGrpCat} (n : ) (f : M N) :
      Hom.hom (n f) = n Hom.hom f
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        @[simp]
        theorem AddCommGrpCat.hom_neg {M N : AddCommGrpCat} (f : M N) :
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          @[simp]
          theorem AddCommGrpCat.hom_sub {M N : AddCommGrpCat} (f g : M N) :
          @[simp]
          theorem AddCommGrpCat.hom_zsmul {M N : AddCommGrpCat} (n : ) (f : M N) :
          Hom.hom (n f) = n Hom.hom f
          def AddCommGrpCat.homAddEquiv {M N : AddCommGrpCat} :
          (M N) ≃+ (M →+ N)

          AddCommGrpCat.Hom.hom bundled as an additive equivalence.

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            Instances For