Structure

category of rings

Notation Ring\Ring Objects rings Morphisms ring homomorphisms Parent Alg(R)\Alg(R) Related CRing\CRing, Rng\Rng, Mon\Mon External nLab link
Here, rings always have a unit, and homomorphisms preserve them. This category is the special case of Alg(R)\Alg(R) where R=ZR = \IZ.

Satisfied properties

Assigned properties

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Properties from parent

Deduced properties

Unsatisfied properties

Assigned properties

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Properties from parent

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

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Special objects

  • terminal object: zero ring
  • initial object: ring of integers
  • products: direct products with pointwise operations
  • coproducts: see MSE/625874

Special morphisms

Indistinguishable categories

These categories in the database currently have exactly the same properties as the category of rings. This indicates that the data may be incomplete or that a distinguishing property may be missing from the database.

Comments

Functors

The database stores 5 functors based on the category of rings.