formal language consists of words whose letters are taken from an alphabet and are well-formed according to a specific set of rules called a formal grammar...

it Formal verification, proves correctness of a system Formal system, an abstract means of generating inferences in a formal language Formal language, comprising...

A formal grammar describes which strings from an alphabet of a formal language are valid according to the language's syntax. A grammar does not describe...

Formal semantics is the study of grammatical meaning in natural languages using formal tools from logic, mathematics and theoretical computer science....

methods, the formal sciences use language tools concerned with characterizing abstract structures described by formal systems. The formal sciences aid...

respectively. A formal language is a language that is defined by a formal system. Like languages in linguistics, formal languages generally have two...

robustness of a design. Formal methods employ a variety of theoretical computer science fundamentals, including logic calculi, formal languages, automata theory...

In formal language theory, an alphabet, sometimes called a vocabulary, is a non-empty set of indivisible symbols/characters/glyphs, typically thought...

In mathematics, a local language is a formal language for which membership of a word in the language can be determined by looking at the first and last...

is the language consisting of strings w such that xw is in L 1 {\displaystyle L_{1}} for some string x in L 2 {\displaystyle L_{2}} . Formally: L 2 ∖...

their syntax (form) and semantics (meaning), usually defined by a formal language. Languages usually provide features such as a type system, variables and...

In formal language theory and pattern matching, alternation is the union of two sets of strings, or equivalently the logical disjunction of two patterns...

formal language theory, a cone is a set of formal languages that has some desirable closure properties enjoyed by some well-known sets of languages,...

A computer language is a formal language used to communicate with a computer. Types of computer languages include: Construction language – all forms of...

mathematics, a formal proof or derivation is a finite sequence of sentences (called well-formed formulas in the case of a formal language), each of which...

grammar Context-sensitive language Decidable language ECLR-attributed grammar Finite language Formal grammar Formal language Formal system Generalized star...

theoretical computer science and formal language theory, a regular language (also called a rational language) is a formal language that can be defined by a regular...

In formal language theory, weak equivalence of two grammars means they generate the same set of strings, i.e. that the formal language they generate is...

pattern language is a formal language that can be defined as the set of all particular instances of a string of constants and variables. Pattern Languages were...

interpretation is an assignment of meaning to the symbols of a formal language. Many formal languages used in mathematics, logic, and theoretical computer science...

programming language design, type theory, compilers and interpreters, program verification and model checking. There are many approaches to formal semantics;...

in natural language while formal logic uses formal language. When used as a countable noun, the term "a logic" refers to a logical formal system that...

A specification language is a formal language in computer science used during systems analysis, requirements analysis, and systems design to describe...

namely either a spoken language or a sign language. Natural languages are distinguished from constructed and formal languages such as those used to program...

rules of the language. In a formal system a symbol may be used as a token in formal operations. The set of formal symbols in a formal language is referred...

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 formal language theory and computer science, a substring is a contiguous sequence of characters within a string.[citation needed] For instance, "the...

The field is divided into three major branches: automata theory and formal languages, computability theory, and computational complexity theory, which are...

In philosophy, the term formal ontology is used to refer to an ontology defined by axioms in a formal language with the goal to provide an unbiased (domain-...

In formal language theory, a context-free language (CFL), also called a Chomsky type-2 language, is a language generated by a context-free grammar (CFG)...