Structure

walking idempotent

Notation Idem\Idem Objects a single object 00 Morphisms two morphisms id0,e:0⇉0\id_0,e : 0 \rightrightarrows 0 with e2=ee^2=e Related BGBG, Isom\Isom, II, Split\Split
The name of this category comes from the fact that a functor Idem→C\Idem \to \C is the same as an idempotent morphism in C\C. It can also be seen as the delooping of the monoid {1,e}\{1,e\} in which e2=ee^2=e.

Satisfied properties

Assigned properties

Deduced properties

Unsatisfied properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

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Special objects

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Special morphisms

  • isomorphisms: the identity
  • monomorphisms: the identity
  • epimorphisms: the identity
  • regular monomorphisms: the identity
  • regular epimorphisms: the identity

Functors

The database stores 1 functor based on the walking idempotent.