Constraint System
IntroductionA Constraint System (CS for short) is a complete algebraic lattice, where its elements represent information. DiscussionA CS is a tuple ⟨cons, cons₀, ⊑, ⨆, ⨅, true, false⟩ where cons : Set of elements of the CS. cons₀ : Set of compact elements of the CS. Cons₀ ⊆ Cons. -- NOT YET IMPLEMENTED -- ⊑ : Ordering binary relation (reflexive, antisymmetric and transitive). When c ⊑ d we say c is entailed by d and d entails c. ⨆ : Join set operator. Least Upper Bound (LUB) between elements of the CS. ⨅ : Meet set operator. Greatest lower bound (GLB) between elements of the CS. ⊥ : Global infima of CS, also called the bottom. All elements entail it. ⊤ : Global suprema of CS, also called the top. All elements are entailed by it.
Classes
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