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- 2-category
- Abelian category
- Abelian group
- Additive category
- Adjoint functors
- Biproduct
- Categorical product
- Category
- Category of Abelian groups
- Category of abelian groups
- Category of algebras in a variety
- Category of groups
- Category of pointed sets
- Category of sets
- Category of small categories
- Category of topological spaces
- Cocomplete category
- Complete category
- Concrete category
- Conormal category
- Conservative functor
- Contravariant functor
- Covariant Hom functor
- Covariant functor
- Enriched category
- Epimorphism
- Equivalence of categories
- Essentially surjective functor
- Faithful functor
- Final object
- Full functor
- Functor
- Group
- Initial object
- Locally finitely presentable category
- Locally small category
- Main Page
- Monoidal category
- Monoidal category of Abelian groups
- Monoidal category of abelian groups
- Monomorphism
- Natural isomorphism
- Natural transformation
- Normal category
- Normal epimorphism
- Normal monomorphism
- Opposite category
- PreAbelian category
- Preabelian category
- Preadditive category
- Product
- Product-preserving functor
- Pullback-preserving functor
- Representable contravariant functor
- Representable functor
- Small category
- Symmetric monoidal category
- Zero object