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Formal language, which is a set of well-formed formulas, which are strings of symbols from an alphabet, formed by a formal grammar (consisting of production rules or formation rules). Deductive system, deductive apparatus, or proof system , which has rules of inference that take axioms and infers theorems , both of which are part of the formal ...
Formal language theory, the discipline that studies formal grammars and languages, is a branch of applied mathematics. Its applications are found in theoretical computer science, theoretical linguistics, formal semantics, mathematical logic, and other areas. A formal grammar is a set of rules for rewriting strings, along with a "start symbol ...
Regular language. In theoretical computer science and formal language theory, a regular language (also called a rational language) [ 1][ 2] is a formal language that can be defined by a regular expression, in the strict sense in theoretical computer science (as opposed to many modern regular expression engines, which are augmented with features ...
The Chomsky hierarchy in the fields of formal language theory, computer science, and linguistics, is a containment hierarchy of classes of formal grammars. A formal grammar describes how to form strings from a language's vocabulary (or alphabet) that are valid according to the language's syntax. The linguist Noam Chomsky theorized that four ...
Literary language. Literary language is the form (register) of a language used when writing in a formal, academic, or particularly polite tone; when speaking or writing in such a tone, it can also be known as formal language. It may be the standardized variety of a language.
Formal linguistics is the branch of linguistics which uses applied mathematical methods for the analysis of natural languages. Such methods include formal languages, formal grammars and first-order logical expressions. Formal linguistics also forms the basis of computational linguistics. Since the 1980s, the term is often used to refer to ...
Formalism (linguistics) A generative parse tree: the sentence is divided into a noun phrase (subject), and a verb phrase which includes the object. This is in contrast to structural and functional grammar which considers the subject and object as equal constituents. [1] [2] Part of a series on.
These models, or "formal grammars", show the abstract structures of a specific language as they may relate to structures in other languages. [20] Chomsky developed transformational grammar in the mid-1950s, whereupon it became the dominant syntactic theory in linguistics for two decades. [19] "