CatDat

trivial category

  • notation: 1\mathbf{1}
  • objects: a single object
  • morphisms: only the identity morphism
  • nLab Link
  • Related categories: 2\mathbf{2}

This is the simplest category, consisting of a single object and only the identity morphism. It is the terminal object in the category of small categories.

Properties

Properties from the database

Deduced properties

Non-Properties

Non-Properties from the database

Deduced Non-Properties*

*This also uses the deduced properties.

Unknown properties

Special morphisms

  • Isomorphisms: every morphism
  • Monomorphisms: every morphism
  • Epimorphisms: every morphism