• 1. The functor F satisfies the following conditions:
    1. (a) The functor F is faithful, i.e. for each A,BObj(C), the action on morphisms
      FA,B:HomC(A,B)HomD(FA,FB)

      of F at (A,B) is injective.

    2. (b) For each A,BObj(C), the restriction
      FA,Biso:IsoC(A,B)IsoD(FA,FB)

      of the action on morphisms of F at (A,B) to isomorphisms is surjective.


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