category of free abelian groups
Properties
Properties from the database
- is Malcev
- is additive
- has a cogenerator
- has coproducts
- has equalizers
- has a generator
- is locally small
- is well-copowered
- is well-powered
Deduced properties
- is locally essentially small
- is Cauchy complete
- has finite products
- is finitely complete
- has binary products
- has a terminal object
- has pullbacks
- is connected
- is preadditive
- has zero morphisms
- has disjoint finite coproducts
- has disjoint coproducts
- has finite coproducts
- is inhabited
- has countable coproducts
- has binary coproducts
- has an initial object
- is pointed
Non-Properties
Non-Properties from the database
- is not balanced
- does not have countable products
- does not have filtered colimits
- is not skeletal
Deduced Non-Properties*
- is not discrete
- does not have products
- is not complete
- does not have filtered limits
- does not have wide pullbacks
- does not have connected limits
- is not essentially discrete
- is not trivial
- is not cartesian closed
- is not thin
- is not essentially finite
- is not finite
- does not have a strict initial object
- is not left cancellative
- is not right cancellative
- does not have sequential limits
- does not have exact filtered colimits
- is not distributive
- is not infinitary distributive
- is not locally presentable
- is not locally finitely presentable
- is not locally ℵ₁-presentable
- is not finitary algebraic
- is not an elementary topos
- is not a Grothendieck topos
- is not Grothendieck abelian
- does not have a subobject classifier
- is not a groupoid
- is not mono-regular
- is not abelian
- is not split abelian
- is not essentially small
- is not small
- is not cocomplete
- does not have coequalizers
- is not finitely cocomplete
- does not have pushouts
- does not have connected colimits
- does not have wide pushouts
- does not have a strict terminal object
- is not epi-regular
- is not self-dual
*This also uses the deduced properties.
Unknown properties
For these properties the database currently doesn't have an answer if they are satisfied or not. Please help to complete the data!
Special morphisms
- Isomorphisms: bijective homomorphisms
- Monomorphisms: injective homomorphisms
- Epimorphisms: homomorphisms with the property that is not contained in a proper direct summand of .
Comments
- Sequential colimits are discussed at MSE/5025660. Probably they do not exist.