walking morphism

Notation II Objects 00, 11 Morphisms the two identities and a single morphism from 00 to 11 Related Square\SquareComp\CompIdem\IdemIsom\IsomPair\PairSpan\SpanSplit\Split External nLab Link

This is also known as the interval category and can be pictured as: {01}\{0 \to 1\} It has the property that functors ICI \to \C are the same as morphisms in C\C, which explains its name.

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: 11
  • initial object: 00
  • products: 0×x=00 \times x = 0, 1×x=x1 \times x = x
  • coproducts: 0x=x0 \sqcup x = x, 1x=11 \sqcup x = 1

Special morphisms

  • isomorphisms: only the identities
  • monomorphisms: every morphism
  • epimorphisms: every morphism
  • regular monomorphisms: same as isomorphisms
  • regular epimorphisms: same as isomorphisms

Functors

The database stores 2 functors based on the walking morphism.

Morphisms

The database stores 1 morphism based on the walking morphism.