category of Hausdorff spaces
- notation:
- objects: Hausdorff spaces
- morphisms: continuous functions
- Related categories: ,
- nLab Link
This is the full subcategory of consisting of those spaces that are Hausdorff.
Satisfied Properties
Properties from the database
- is co-Malcev
- is cocomplete
- has equalizers
- has a generator
- is infinitary extensive
- is locally small
- has products
- is semi-strongly connected
- is well-copowered
- is well-powered
Deduced properties
- has coreflexive equalizers
- has countable products
- has finite products
- has powers
- has binary products
- has a terminal object
- has countable powers
- is complete
- has connected limits
- is finitely complete
- has pullbacks
- is Cauchy complete
- has wide pullbacks
- has cofiltered limits
- has sequential limits
- has finite powers
- has binary powers
- is multi-complete
- has a multi-terminal object
- is connected
- has coproducts
- is extensive
- has finite coproducts
- has cocartesian cofiltered limits
- has disjoint finite coproducts
- has disjoint coproducts
- has a strict initial object
- has an initial object
- is distributive
- is infinitary distributive
- is countably distributive
- has countable coproducts
- is locally essentially small
- has a generating set
- is inhabited
- has a natural numbers object
- is filtered
- is sifted
- has connected colimits
- has sifted colimits
- has filtered colimits
- has reflexive coequalizers
- has directed colimits
- is finitely cocomplete
- has cosifted limits
- has copowers
- has binary coproducts
- has coequalizers
- has countable copowers
- has sequential colimits
- has pushouts
- has directed limits
- has wide pushouts
- has finite copowers
- has binary copowers
- is multi-cocomplete
- has a multi-initial object
- is cosifted
- is cofiltered
Unsatisfied Properties
Properties from the database
- is not balanced
- does not have cartesian filtered colimits
- is not Malcev
- does not have a regular subobject classifier
- is not skeletal
Deduced properties*
- does not have biproducts
- does not have exact filtered colimits
- is not mono-regular
- is not a groupoid
- is not normal
- is not direct
- is not additive
- is not preadditive
- is not abelian
- is not Grothendieck abelian
- is not split abelian
- is not discrete
- is not essentially discrete
- is not trivial
- is not thin
- does not have a strict terminal object
- is not pointed
- does not have zero morphisms
- does not have kernels
- is not right cancellative
- is not left cancellative
- is not one-way
- is not essentially small
- is not small
- is not essentially countable
- is not essentially finite
- is not finite
- is not countable
- is not locally finitely presentable
- is not locally strongly finitely presentable
- is not finitary algebraic
- is not finitely accessible
- is not a generalized variety
- is not locally finitely multi-presentable
- is not multi-algebraic
- is not cartesian closed
- is not an elementary topos
- does not have a subobject classifier
- is not locally cartesian closed
- is not a Grothendieck topos
- is not strongly connected
- is not unital
- does not have cokernels
- does not have disjoint finite products
- does not have disjoint products
- is not coextensive
- is not infinitary coextensive
- is not codistributive
- is not countably codistributive
- is not infinitary codistributive
- is not cocartesian coclosed
- is not epi-regular
- is not conormal
- is not inverse
- does not have a quotient object classifier
- does not have a regular quotient object classifier
- is not locally cocartesian coclosed
- is not counital
- is not self-dual
*This also uses the deduced satisfied properties.
Unknown properties
There are 12 properties for which the database doesn't have an answer if they are satisfied or not. Please help to contribute the data!
Special objects
- terminal object: singleton space
- initial object: empty space
- products: direct product with the product topology
- coproducts: disjoint union with the disjoint union topology
Special morphisms
- isomorphisms: homeomorphisms
- monomorphisms: injective continuous maps
- epimorphisms: continuous maps with dense image
- regular monomorphisms: embeddings with closed image
- regular epimorphisms: