\begin{code}
{-# OPTIONS --cubical --safe #-}

module Algebra.Construct.Free.Semilattice.Relation.Unary.Membership where

open import Prelude hiding (⊥; ⊤)
open import Algebra.Construct.Free.Semilattice.Eliminators
open import Algebra.Construct.Free.Semilattice.Definition
open import Cubical.Foundations.HLevels
open import Data.Empty.UniversePolymorphic
open import HITs.PropositionalTruncation.Sugar
open import HITs.PropositionalTruncation.Properties
open import HITs.PropositionalTruncation
open import Data.Unit.UniversePolymorphic
open import Algebra.Construct.Free.Semilattice.Relation.Unary.Any.Def

private
  variable p : Level

infixr  _∈_
_∈_ : {A : Type a} → A → 𝒦 A → Type a
x ∈ xs = ◇ (_≡ x) xs
\end{code}