Mathlib Map

Structures · Algebra

IsLocalHom

A map f between monoids is local if any a in the domain is a unit whenever f a is a unit. See IsLocalRing.local_hom_TFAE for other equivalent definitions in the local ring case - from where this concept originates, but it is useful in other contexts, so we allow this generalisation in mathlib.

Defined in
Mathlib.Algebra.Group.Units.Hom
Shape
One type argument · adds map_nonunit

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Extended by0

Nothing extends this class yet.

Concrete types that are instances6

  • CommRingCat.carrier
  • MvPowerSeries
  • PowerSeries
  • Localization.AtPrime
  • HomogeneousLocalization.AtPrime
  • Subtype

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Assumed by81

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