CatDat

category of rngs

This category is a typical example of a one-sorted finitary algebraic category. It is an "additive version" of the category of semigroups SemiGrp\SemiGrp.

Satisfied Properties

Assigned properties

Deduced properties

Unsatisfied Properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

Special objects

  • terminal object: zero ring
  • initial object: trivial ring
  • products: direct products with pointwise operations
  • coproducts: see MSE/4975797

Special morphisms

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

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