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Mathlib.RingTheory.Subsemiring.Order

Ordered instances for SubsemiringClass and Subsemiring. #

instance SubsemiringClass.toOrderedSemiring {R : Type u_1} {S : Type u_2} [SetLike S R] (s : S) [OrderedSemiring R] [SubsemiringClass S R] :

A subsemiring of an OrderedSemiring is an OrderedSemiring.

Equations

A subsemiring of an OrderedSemiring is an OrderedSemiring.

Equations

The set of nonnegative elements in an ordered semiring, as a subsemiring.

Equations
  • Subsemiring.nonneg R = { toSubmonoid := { toSubsemigroup := { carrier := Set.Ici 0, mul_mem' := ⋯ }, one_mem' := ⋯ }, add_mem' := ⋯, zero_mem' := ⋯ }
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