CatDat

category of commutative monoids

Satisfied Properties

Assigned properties

Deduced properties

Unsatisfied Properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

There is 1 property for which the database doesn't have an answer if it is satisfied or not. Please help to contribute the data!

Special objects

  • terminal object: trivial monoid
  • initial object: trivial monoid
  • products: direct products with pointwise operations
  • coproducts: direct sums

Special morphisms

  • isomorphisms: bijective homomorphisms
  • monomorphisms: injective homomorphisms
  • epimorphisms: A morphism in CMon\CMon is an epimorphism iff it is an epimorphism in Mon\Mon, which in turn can be characterized by Isbell's zigzag theorem.
  • regular monomorphisms:
  • regular epimorphisms: surjective homomorphisms