Clean up the Lattice definitions a fair bit
Signed-off-by: Danila Fedorin <danila.fedorin@gmail.com>
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Lattice.agda
167
Lattice.agda
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@ -91,6 +91,31 @@ record Lattice {a} (A : Set a) : Set (lsuc a) where
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open IsLattice isLattice public
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module IsEquivalenceInstances where
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module ForProd {a} {A B : Set a}
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(_≈₁_ : A → A → Set a) (_≈₂_ : B → B → Set a)
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(eA : IsEquivalence A _≈₁_) (eB : IsEquivalence B _≈₂_) where
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infix 4 _≈_
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_≈_ : A × B → A × B → Set a
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(a₁ , b₁) ≈ (a₂ , b₂) = (a₁ ≈₁ a₂) × (b₁ ≈₂ b₂)
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ProdEquivalence : IsEquivalence (A × B) _≈_
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ProdEquivalence = record
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{ ≈-refl = λ {p} →
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( IsEquivalence.≈-refl eA
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, IsEquivalence.≈-refl eB
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)
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; ≈-sym = λ {p₁} {p₂} (a₁≈a₂ , b₁≈b₂) →
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( IsEquivalence.≈-sym eA a₁≈a₂
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, IsEquivalence.≈-sym eB b₁≈b₂
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)
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; ≈-trans = λ {p₁} {p₂} {p₃} (a₁≈a₂ , b₁≈b₂) (a₂≈a₃ , b₂≈b₃) →
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( IsEquivalence.≈-trans eA a₁≈a₂ a₂≈a₃
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, IsEquivalence.≈-trans eB b₁≈b₂ b₂≈b₃
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)
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}
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module ForMap {a b} (A : Set a) (B : Set b)
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(≡-dec-A : Decidable (_≡_ {a} {A}))
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(_≈₂_ : B → B → Set b)
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@ -105,13 +130,13 @@ module IsEquivalenceInstances where
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; ≈-trans to ≈₂-trans
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)
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private
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_≈_ : Map → Map → Set (Agda.Primitive._⊔_ a b)
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_≈_ = lift _≈₂_
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_⊆_ : Map → Map → Set (Agda.Primitive._⊔_ a b)
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_⊆_ = subset _≈₂_
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private
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⊆-refl : (m : Map) → m ⊆ m
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⊆-refl _ k v k,v∈m = (v , (≈₂-refl , k,v∈m))
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@ -122,23 +147,14 @@ module IsEquivalenceInstances where
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(v'' , (v'≈v'' , k,v''∈m₃)) = m₂⊆m₃ k v' k,v'∈m₂
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in (v'' , (≈₂-trans v≈v' v'≈v'' , k,v''∈m₃))
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≈-refl : (m : Map) → m ≈ m
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≈-refl m = (⊆-refl m , ⊆-refl m)
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≈-sym : (m₁ m₂ : Map) → m₁ ≈ m₂ → m₂ ≈ m₁
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≈-sym _ _ (m₁⊆m₂ , m₂⊆m₁) = (m₂⊆m₁ , m₁⊆m₂)
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≈-trans : (m₁ m₂ m₃ : Map) → m₁ ≈ m₂ → m₂ ≈ m₃ → m₁ ≈ m₃
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≈-trans m₁ m₂ m₃ (m₁⊆m₂ , m₂⊆m₁) (m₂⊆m₃ , m₃⊆m₂) =
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LiftEquivalence : IsEquivalence Map _≈_
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LiftEquivalence = record
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{ ≈-refl = λ {m} → (⊆-refl m , ⊆-refl m)
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; ≈-sym = λ {m₁} {m₂} (m₁⊆m₂ , m₂⊆m₁) → (m₂⊆m₁ , m₁⊆m₂)
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; ≈-trans = λ {m₁} {m₂} {m₃} (m₁⊆m₂ , m₂⊆m₁) (m₂⊆m₃ , m₃⊆m₂) →
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( ⊆-trans m₁ m₂ m₃ m₁⊆m₂ m₂⊆m₃
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, ⊆-trans m₃ m₂ m₁ m₃⊆m₂ m₂⊆m₁
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)
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LiftEquivalence : IsEquivalence Map _≈_
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LiftEquivalence = record
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{ ≈-refl = λ {m₁} → ≈-refl m₁
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; ≈-sym = λ {m₁} {m₂} → ≈-sym m₁ m₂
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; ≈-trans = λ {m₁} {m₂} {m₃} → ≈-trans m₁ m₂ m₃
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}
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module IsSemilatticeInstances where
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@ -179,63 +195,29 @@ module IsSemilatticeInstances where
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open Eq
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open Data.Product
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private
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infix 4 _≈_
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infixl 20 _⊔_
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module ProdEquiv = IsEquivalenceInstances.ForProd _≈₁_ _≈₂_ (IsSemilattice.≈-equiv sA) (IsSemilattice.≈-equiv sB)
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open ProdEquiv using (_≈_) public
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_≈_ : A × B → A × B → Set a
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(a₁ , b₁) ≈ (a₂ , b₂) = (a₁ ≈₁ a₂) × (b₁ ≈₂ b₂)
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infixl 20 _⊔_
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_⊔_ : A × B → A × B → A × B
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(a₁ , b₁) ⊔ (a₂ , b₂) = (a₁ ⊔₁ a₂ , b₁ ⊔₂ b₂)
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⊔-assoc : (p₁ p₂ p₃ : A × B) → (p₁ ⊔ p₂) ⊔ p₃ ≈ p₁ ⊔ (p₂ ⊔ p₃)
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⊔-assoc (a₁ , b₁) (a₂ , b₂) (a₃ , b₃) =
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ProdIsSemilattice : IsSemilattice (A × B) _≈_ _⊔_
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ProdIsSemilattice = record
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{ ≈-equiv = ProdEquiv.ProdEquivalence
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; ⊔-assoc = λ (a₁ , b₁) (a₂ , b₂) (a₃ , b₃) →
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( IsSemilattice.⊔-assoc sA a₁ a₂ a₃
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, IsSemilattice.⊔-assoc sB b₁ b₂ b₃
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)
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⊔-comm : (p₁ p₂ : A × B) → p₁ ⊔ p₂ ≈ p₂ ⊔ p₁
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⊔-comm (a₁ , b₁) (a₂ , b₂) =
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; ⊔-comm = λ (a₁ , b₁) (a₂ , b₂) →
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( IsSemilattice.⊔-comm sA a₁ a₂
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, IsSemilattice.⊔-comm sB b₁ b₂
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)
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⊔-idemp : (p : A × B) → p ⊔ p ≈ p
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⊔-idemp (a , b) =
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; ⊔-idemp = λ (a , b) →
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( IsSemilattice.⊔-idemp sA a
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, IsSemilattice.⊔-idemp sB b
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)
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≈-refl : {p : A × B} → p ≈ p
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≈-refl =
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( IsSemilattice.≈-refl sA
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, IsSemilattice.≈-refl sB
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)
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≈-sym : {p₁ p₂ : A × B} → p₁ ≈ p₂ → p₂ ≈ p₁
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≈-sym (a₁≈a₂ , b₁≈b₂) =
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( IsSemilattice.≈-sym sA a₁≈a₂
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, IsSemilattice.≈-sym sB b₁≈b₂
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)
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≈-trans : {p₁ p₂ p₃ : A × B} → p₁ ≈ p₂ → p₂ ≈ p₃ → p₁ ≈ p₃
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≈-trans (a₁≈a₂ , b₁≈b₂) (a₂≈a₃ , b₂≈b₃) =
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( IsSemilattice.≈-trans sA a₁≈a₂ a₂≈a₃
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, IsSemilattice.≈-trans sB b₁≈b₂ b₂≈b₃
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)
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ProdIsSemilattice : IsSemilattice (A × B) _≈_ _⊔_
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ProdIsSemilattice = record
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{ ≈-equiv = record
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{ ≈-refl = ≈-refl
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; ≈-sym = ≈-sym
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; ≈-trans = ≈-trans
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}
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; ⊔-assoc = ⊔-assoc
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; ⊔-comm = ⊔-comm
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; ⊔-idemp = ⊔-idemp
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}
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module ForMap {a} {A B : Set a}
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@ -250,12 +232,11 @@ module IsSemilatticeInstances where
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; ⊔-assoc to ⊔₂-assoc; ⊔-comm to ⊔₂-comm; ⊔-idemp to ⊔₂-idemp
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)
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private
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infix 4 _≈_
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infixl 20 _⊔_
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module MapEquiv = IsEquivalenceInstances.ForMap A B ≡-dec-A _≈₂_ (IsSemilattice.≈-equiv sB)
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open MapEquiv using (_≈_) public
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_≈_ : Map → Map → Set a
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_≈_ = lift (_≈₂_)
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infixl 20 _⊔_
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infixl 20 _⊓_
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_⊔_ : Map → Map → Map
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m₁ ⊔ m₂ = union _⊔₂_ m₁ m₂
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@ -263,8 +244,6 @@ module IsSemilatticeInstances where
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_⊓_ : Map → Map → Map
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m₁ ⊓ m₂ = intersect _⊔₂_ m₁ m₂
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module MapEquiv = IsEquivalenceInstances.ForMap A B ≡-dec-A _≈₂_ (IsSemilattice.≈-equiv sB)
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MapIsUnionSemilattice : IsSemilattice Map _≈_ _⊔_
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MapIsUnionSemilattice = record
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{ ≈-equiv = MapEquiv.LiftEquivalence
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@ -333,44 +312,24 @@ module IsLatticeInstances where
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(_⊔₂_ : B → B → B) (_⊓₂_ : B → B → B)
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(lA : IsLattice A _≈₁_ _⊔₁_ _⊓₁_) (lB : IsLattice B _≈₂_ _⊔₂_ _⊓₂_) where
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private
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module ProdJoin = IsSemilatticeInstances.ForProd _≈₁_ _≈₂_ _⊔₁_ _⊔₂_ (IsLattice.joinSemilattice lA) (IsLattice.joinSemilattice lB)
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open ProdJoin using (_⊔_; _≈_) public
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module ProdMeet = IsSemilatticeInstances.ForProd _≈₁_ _≈₂_ _⊓₁_ _⊓₂_ (IsLattice.meetSemilattice lA) (IsLattice.meetSemilattice lB)
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infix 4 _≈_
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infixl 20 _⊔_
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_≈_ : (A × B) → (A × B) → Set a
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(a₁ , b₁) ≈ (a₂ , b₂) = (a₁ ≈₁ a₂) × (b₁ ≈₂ b₂)
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_⊔_ : (A × B) → (A × B) → (A × B)
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(a₁ , b₁) ⊔ (a₂ , b₂) = (a₁ ⊔₁ a₂ , b₁ ⊔₂ b₂)
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_⊓_ : (A × B) → (A × B) → (A × B)
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(a₁ , b₁) ⊓ (a₂ , b₂) = (a₁ ⊓₁ a₂ , b₁ ⊓₂ b₂)
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open Eq
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open Data.Product
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private
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absorb-⊔-⊓ : (p₁ p₂ : A × B) → p₁ ⊔ (p₁ ⊓ p₂) ≈ p₁
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absorb-⊔-⊓ (a₁ , b₁) (a₂ , b₂) =
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( IsLattice.absorb-⊔-⊓ lA a₁ a₂
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, IsLattice.absorb-⊔-⊓ lB b₁ b₂
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)
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absorb-⊓-⊔ : (p₁ p₂ : A × B) → p₁ ⊓ (p₁ ⊔ p₂) ≈ p₁
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absorb-⊓-⊔ (a₁ , b₁) (a₂ , b₂) =
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( IsLattice.absorb-⊓-⊔ lA a₁ a₂
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, IsLattice.absorb-⊓-⊔ lB b₁ b₂
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)
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open ProdMeet using () renaming (_⊔_ to _⊓_) public
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ProdIsLattice : IsLattice (A × B) _≈_ _⊔_ _⊓_
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ProdIsLattice = record
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{ joinSemilattice = ProdJoin.ProdIsSemilattice
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; meetSemilattice = ProdMeet.ProdIsSemilattice
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; absorb-⊔-⊓ = absorb-⊔-⊓
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; absorb-⊓-⊔ = absorb-⊓-⊔
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; absorb-⊔-⊓ = λ (a₁ , b₁) (a₂ , b₂) →
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( IsLattice.absorb-⊔-⊓ lA a₁ a₂
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, IsLattice.absorb-⊔-⊓ lB b₁ b₂
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)
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; absorb-⊓-⊔ = λ (a₁ , b₁) (a₂ , b₂) →
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( IsLattice.absorb-⊓-⊔ lA a₁ a₂
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, IsLattice.absorb-⊓-⊔ lB b₁ b₂
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)
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}
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module ForMap {a} {A B : Set a}
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@ -387,21 +346,11 @@ module IsLatticeInstances where
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; absorb-⊔-⊓ to absorb-⊔₂-⊓₂; absorb-⊓-⊔ to absorb-⊓₂-⊔₂
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)
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private
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module MapJoin = IsSemilatticeInstances.ForMap ≡-dec-A _≈₂_ _⊔₂_ (IsLattice.joinSemilattice lB)
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open MapJoin using (_⊔_; _≈_) public
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module MapMeet = IsSemilatticeInstances.ForMap ≡-dec-A _≈₂_ _⊓₂_ (IsLattice.meetSemilattice lB)
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infix 4 _≈_
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infixl 20 _⊔_
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_≈_ : Map → Map → Set a
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_≈_ = lift (_≈₂_)
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_⊔_ : Map → Map → Map
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m₁ ⊔ m₂ = union _⊔₂_ m₁ m₂
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_⊓_ : Map → Map → Map
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m₁ ⊓ m₂ = intersect _⊓₂_ m₁ m₂
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open MapMeet using (_⊓_) public
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MapIsLattice : IsLattice Map _≈_ _⊔_ _⊓_
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MapIsLattice = record
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