CatDat

walking isomorphism

  • notation: {01}\{0 \rightleftarrows 1\}
  • objects: two objects 00 and 11
  • morphisms: identities, and two morphisms 010 \to 1 and 101 \to 0 that are mutually inverse
  • nLab Link
  • Related categories: 1\mathbf{1}{01}\{0 \to 1\}

The name of this category comes from the fact that it consists of two objects and an isomorphism between them, and a functor out of this category is the same as an isomorphism in the target category. The walking isomorphism is actually equivalent to the trivial category.

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