CatDat

delooping of a group

Every group GG yields a groupoid BGBG with a single object *, morphisms given by the elements of GG, and composition given by the group operation. We assume that GG is non-trivial, since otherwise we get the trivial category.

Satisfied Properties

Assigned properties

Deduced properties

Unsatisfied Properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

Undecidable properties

There are 5 properties for which it cannot be decided if they are satisfied or not.

Special objects

Special morphisms

  • isomorphisms: every morphism
  • monomorphisms: every morphism
  • epimorphisms: every morphism
  • regular monomorphisms: same as isomorphisms
  • regular epimorphisms: same as isomorphisms

Functors

The database stores 1 functor based on the delooping of a group.