category of finite sets

Notation FinSet\FinSet Objects finite sets Morphisms maps Related FI\FIFS\FSSet\SetSetc\Set_\cSetff\Set_\ffB\IBFinGrp\FinGrpFinSeteven\FinSet_{\even}FinSetodd\FinSet_{\odd}FinSet3\FinSet_{3^\bullet} External nLab Link

This is the full subcategory of Set\Set that consists of the finite sets.

Satisfied Properties

Assigned properties

Deduced properties

Unsatisfied Properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

Special objects

  • terminal object: singleton set
  • initial object: empty set
  • products: [finite case] direct products
  • coproducts: [finite case] disjoint union

Special morphisms

  • isomorphisms: bijective maps
  • monomorphisms: injective maps
  • epimorphisms: surjective maps
  • regular monomorphisms: same as monomorphisms
  • regular epimorphisms: same as epimorphisms

Functors

The database stores 1 functor based on the category of finite sets.