Classical.Small.Structures.CommutativeSemigroup¶

Level-fixed Commutative Semigroup¶

This is the Classical.Small.Structures.CommutativeSemigroup module of the Agda Universal Algebra Library.

Specializes Classical.Structures.CommutativeSemigroup to the 0ℓ–0ℓ case, mirroring the veneers of Magma, Semigroup, etc.

{-# OPTIONS --cubical-compatible --exact-split --safe #-}
module Classical.Small.Structures.CommutativeSemigroup where
open import Agda.Primitive                          using () renaming ( Set to Type )
open import Level                                   using ( 0ℓ ; suc )
open import Relation.Binary.PropositionalEquality   using ( _≡_ )
import Classical.Structures.CommutativeSemigroup as Polymorphic

CommutativeSemigroup : Type (suc 0ℓ)
CommutativeSemigroup = Polymorphic.CommutativeSemigroup 0ℓ 0ℓ

eqsToCommutativeSemigroup : (A : Type 0ℓ) (_·_ : A → A → A)
  → (∀ a b c → (a · b) · c ≡ a · (b · c))
  → (∀ a b → a · b ≡ b · a)
  → CommutativeSemigroup
eqsToCommutativeSemigroup = Polymorphic.eqsToCommutativeSemigroup