Structure

category of groups

Notation Grp\Grp Objects groups Morphisms group homomorphisms Related FinGrp\FinGrp, Grpfg\Grp_{\fg}, Grpc\Grp_\c, Ab\Ab, Mon\Mon, SemiGrp\SemiGrp External nLab link
This is the prototype of a one-sorted finitary algebraic category.

Satisfied properties

Assigned properties

Deduced properties

Unsatisfied properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

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Special objects

  • terminal object: trivial group
  • initial object: trivial group
  • products: direct products with pointwise operations
  • coproducts: free products

Special morphisms

  • isomorphisms: bijective morphisms
  • monomorphisms: injective morphisms
  • epimorphisms: surjective morphisms
  • regular monomorphisms: same as monomorphisms
  • regular epimorphisms: surjective morphisms

Functors

The database stores 12 functors based on the category of groups.

Morphisms

The database stores 2 morphisms based on the category of groups.