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Conjunctive grammars are a class of formal grammars studied in formal language theory. They extend the basic type of grammars, the context-free grammars , with a conjunction operation. Besides explicit conjunction, conjunctive grammars allow implicit disjunction represented by multiple rules for a single nonterminal symbol, which is the only ...
In grammar, a conjunction (abbreviated CONJ or CNJ) is a part of speech that connects words, phrases, or clauses, which are called its conjuncts.That description is vague enough to overlap with those of other parts of speech because what constitutes a "conjunction" must be defined for each language.
In linguistics, a disjunct is a type of adverbial adjunct that expresses information that is not considered essential to the sentence it appears in, but which is considered to be the speaker's or writer's attitude towards, or descriptive statement of, the propositional content of the sentence, "expressing, for example, the speaker's degree of truthfulness or his manner of speaking."
In propositional logic and Boolean algebra, there is a duality between conjunction and disjunction, [1] [2] [3] also called the duality principle. [ 4 ] [ 5 ] [ 6 ] It is the most widely known example of duality in logic. [ 1 ]
Disjunctive pronominal forms are typically found in the following contexts. The examples are taken from French, which uses the disjunctive first person singular pronoun moi. The (sometimes colloquial) English translations illustrate similar uses of me as a disjunctive form. in syntactically unintegrated disjunct (or "dislocated") positions
Besides these explicit operations, Boolean grammars allow implicit disjunction represented by multiple rules for a single nonterminal symbol, which is the only logical connective expressible in context-free grammars. Conjunction and negation can be used, in particular, to specify intersection and complement of languages.
In English, as in many other languages, disjunction is expressed by a coordinating conjunction. Other languages express disjunctive meanings in a variety of ways, though it is unknown whether disjunction itself is a linguistic universal. In many languages such as Dyirbal and Maricopa, disjunction is marked using a verb suffix.
The English subjunctive is realized as a finite but tenseless clause.Subjunctive clauses use a bare or plain verb form, which lacks any inflection.For instance, a subjunctive clause would use the verb form "be" rather than "am/is/are" and "arrive" rather than "arrives", regardless of the person and number of the subject.