category of finite sets of cardinality a power of 3

Notation FinSet3\FinSet_{3^\bullet} Objects finite sets whose cardinality is a power of 33 Morphisms maps Related FinSet\FinSetFinSeteven\FinSet_{\even}FinSetodd\FinSet_{\odd}

This is the full subcategory of FinSet\FinSet consisting of finite sets whose cardinality is 3k3^k for some kNk \in \IN. We have included this category only because of its interesting property combinations.

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
  • products: [finite case] direct products

Special morphisms

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