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**Arity**— In logic, mathematics, and computer science, the arity i/ˈær … Wikipedia**arity**— noun /ˈæɹɪɾij,ˈeəɹɪɾij/ The number of arguments or operands a function or operation takes. For a relation, the number of domains in the corresponding Cartesian product. Syn: adinity, adicity, type, rank … Wiktionary**arity**— n. total number of items involved in a particular relationship; number of arguments taken by a particular function (Computer Programming); number of arguments taken by a predicate (Linguistics) … English contemporary dictionary**Boolean algebras canonically defined**— Boolean algebras have been formally defined variously as a kind of lattice and as a kind of ring. This article presents them more neutrally but equally formally as simply the models of the equational theory of two values, and observes the… … Wikipedia**Structure (mathematical logic)**— In universal algebra and in model theory, a structure consists of a set along with a collection of finitary operations and relations which are defined on it. Universal algebra studies structures that generalize the algebraic structures such as… … Wikipedia**First-order logic**— is a formal logical system used in mathematics, philosophy, linguistics, and computer science. It goes by many names, including: first order predicate calculus, the lower predicate calculus, quantification theory, and predicate logic (a less… … Wikipedia**Logical connective**— This article is about connectives in classical logic. For connectors in natural languages, see discourse connective. For connectives and operators in other logics, see logical constant. For other logical symbols, see table of logic symbols. In… … Wikipedia**Operation (mathematics)**— The general operation as explained on this page should not be confused with the more specific operators on vector spaces. For a notion in elementary mathematics, see arithmetic operation. In its simplest meaning in mathematics and logic, an… … Wikipedia**Prolog**— infobox programming language paradigm = Logic programming year = 1972 designer = Alain Colmerauer implementations = BProlog, ECLiPSe, Ciao Prolog, GNU Prolog, Quintus, SICStus, Strawberry, SWI Prolog, YAP Prolog, tuProlog dialects = ISO Prolog,… … Wikipedia**Tree automaton**— A tree automaton is a type of state machine. Tree automata deal with tree structures, rather than the strings of more conventional state machines. The following article deals with branching tree automata, which correspond to regular languages of… … Wikipedia