CatDat

category of finite sets and injections

This category is badly-behaved in itself, but plays an important role in representation theory.

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

  • initial object: empty set

Special morphisms

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