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+------------------------------------------------------------------------
+-- Agda Helium
+--
+-- Construct algebras of vectors in a pointwise manner
+------------------------------------------------------------------------
+
+{-# OPTIONS --safe --without-K #-}
+
+module Helium.Algebra.Construct.Pointwise where
+
+open import Algebra
+open import Relation.Binary.Core using (Rel)
+open import Data.Nat using (ℕ)
+open import Data.Product using (_,_)
+open import Data.Vec.Functional using (replicate; map; zipWith)
+open import Data.Vec.Functional.Relation.Binary.Pointwise using (Pointwise)
+import Data.Vec.Functional.Relation.Binary.Pointwise.Properties as Pwₚ
+open import Function using (_$_)
+open import Relation.Binary.Bundles using (Setoid)
+
+module _ {a ℓ} {A : Set a} {_≈_ : Rel A ℓ} where
+  private
+    _≋_ = Pointwise _≈_
+
+  module _ {∨ ∧ : Op₂ A} where
+    isLattice : IsLattice _≈_ ∨ ∧ → ∀ n → IsLattice (_≋_ {n}) (zipWith ∨) (zipWith ∧)
+    isLattice L n = record
+      { isEquivalence = Pwₚ.isEquivalence isEquivalence n
+      ; ∨-comm        = λ x y i → ∨-comm (x i) (y i)
+      ; ∨-assoc       = λ x y z i → ∨-assoc (x i) (y i) (z i)
+      ; ∨-cong        = λ x≈y u≈v i → ∨-cong (x≈y i) (u≈v i)
+      ; ∧-comm        = λ x y i → ∧-comm (x i) (y i)
+      ; ∧-assoc       = λ x y z i → ∧-assoc (x i) (y i) (z i)
+      ; ∧-cong        = λ x≈y u≈v i → ∧-cong (x≈y i) (u≈v i)
+      ; absorptive    = (λ x y i → ∨-absorbs-∧ (x i) (y i))
+                      , (λ x y i → ∧-absorbs-∨ (x i) (y i))
+      }
+      where open IsLattice L
+
+    isDistributiveLattice : IsDistributiveLattice _≈_ ∨ ∧ → ∀ n → IsDistributiveLattice (_≋_ {n}) (zipWith ∨) (zipWith ∧)
+    isDistributiveLattice L n = record
+      { isLattice = isLattice L.isLattice n
+      ; ∨-distribʳ-∧ = λ x y z i → L.∨-distribʳ-∧ (x i) (y i) (z i)
+      }
+      where module L = IsDistributiveLattice L
+
+  module _ {∨ ∧ : Op₂ A} {¬ : Op₁ A} {⊤ ⊥ : A} where
+    isBooleanAlgebra : IsBooleanAlgebra _≈_ ∨ ∧ ¬ ⊤ ⊥ → ∀ n → IsBooleanAlgebra (_≋_ {n}) (zipWith ∨) (zipWith ∧) (map ¬) (replicate ⊤) (replicate ⊥)
+    isBooleanAlgebra B n = record
+      { isDistributiveLattice = isDistributiveLattice B.isDistributiveLattice n
+      ; ∨-complementʳ = λ x i → B.∨-complementʳ (x i)
+      ; ∧-complementʳ = λ x i → B.∧-complementʳ (x i)
+      ; ¬-cong = λ x≈y i → B.¬-cong (x≈y i)
+      }
+      where module B = IsBooleanAlgebra B
+
+lattice : ∀ {a ℓ} → Lattice a ℓ → ℕ → Lattice a ℓ
+lattice L n = record { isLattice = isLattice (Lattice.isLattice L) n }
+
+distributiveLattice : ∀ {a ℓ} → DistributiveLattice a ℓ → ℕ → DistributiveLattice a ℓ
+distributiveLattice L n = record
+  { isDistributiveLattice =
+    isDistributiveLattice (DistributiveLattice.isDistributiveLattice L) n
+  }
+
+booleanAlgebra : ∀ {a ℓ} → BooleanAlgebra a ℓ → ℕ → BooleanAlgebra a ℓ
+booleanAlgebra B n = record
+  { isBooleanAlgebra = isBooleanAlgebra (BooleanAlgebra.isBooleanAlgebra B) n }