CatDat

empty category

  • notation: 0\mathbf{0}
  • objects: no objects
  • morphisms: no morphisms
  • Related categories: 1\mathbf{1}
  • nLab Link

This is the category with no objects and no morphisms. It is the initial object in the category of small categories.

Satisfied Properties

Properties from the database

Deduced properties

Unsatisfied Properties

Properties from the database

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

Special objects

Special morphisms

  • isomorphisms: none
  • monomorphisms: none
  • epimorphisms: none
  • regular monomorphisms: same as monomorphisms
  • regular epimorphisms: same as epimorphisms