category of schemes
Properties
Properties from the database
- has disjoint coproducts
- is finitely complete
- is infinitary distributive
- is locally small
- is well-powered
Deduced properties
- is locally essentially small
- has equalizers
- has finite products
- has binary products
- has a terminal object
- has pullbacks
- is connected
- has coproducts
- has disjoint finite coproducts
- has finite coproducts
- is Cauchy complete
- is distributive
- has a strict initial object
- has an initial object
- is inhabited
- has countable coproducts
- has binary coproducts
Non-Properties
Non-Properties from the database
- is not Malcev
- is not cartesian closed
- does not have coequalizers
- does not have countable products
- is not skeletal
- does not have a strict terminal object
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 thin
- is not essentially finite
- is not finite
- is not pointed
- does not have zero morphisms
- does not have sequential limits
- 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 preadditive
- is not additive
- is not abelian
- is not Grothendieck abelian
- is not split abelian
- is not a groupoid
- is not essentially small
- is not small
- is not right cancellative
- is not cocomplete
- is not finitely cocomplete
- does not have pushouts
- does not have connected colimits
- does not have wide pushouts
- is not left cancellative
- 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!
- is balanced
- has a cogenerator
- is epi-regular
- has exact filtered colimits
- has filtered colimits
- has a generator
- is mono-regular
- has sequential colimits
- has a subobject classifier
- is well-copowered
Special morphisms
- Isomorphisms: pairs consisting of a homeomorphism and an isomorphism of sheaves
- Monomorphisms: Morphisms that are radicial and formally unramified.
- Epimorphisms:
Comments
- Lots of properties are unknown here. Please help to fill in the gaps!
- Epimorphisms are discussed at MO/56564. Probably they cannot be classified.