category of fields

Notation Fld\Fld Objects fields Morphisms field homomorphisms (i.e., ring homomorphisms) Related CRing\CRingFld0\Fld_0 External nLab Link

This category is a typical example of a bad category of good objects.

Satisfied Properties

Assigned properties

Deduced properties

Unsatisfied Properties

Assigned properties

Deduced properties*

*This also uses the deduced satisfied properties.

Unknown properties

Special objects

Special morphisms

  • isomorphisms: bijective field homomorphisms
  • monomorphisms: every morphism
  • epimorphisms: purely inseparable homomorphisms
  • regular monomorphisms: A Galois extension is a regular monomorphism iff it is procyclic, and the general case can be reduced to this situation; see MSE/5129895 for details.
  • regular epimorphisms: same as isomorphisms

Comments

Functors

The database stores 1 functor based on the category of fields.