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

validation. Regular expression techniques are developed in theoretical computer science and formal language theory. The concept of regular expressions...

language theory, the ω-regular languages are a class of ω-languages that generalize the definition of regular languages to infinite words. As regular...

theory of formal languages, the pumping lemma for regular languages is a lemma that describes an essential property of all regular languages. Informally,...

REgular LAnguage description for XML (RELAX) is a specification for describing XML-based languages. A description written in RELAX is called a RELAX grammar...

began in 1936 Regular inflection, the formation of derived forms such as plurals in ways that are typical for the language Regular verb Regular script, the...

theoretical computer science and formal language theory, a regular grammar is a grammar that is right-regular or left-regular. While their exact definition varies...

theory, induction of regular languages refers to the task of learning a formal description (e.g. grammar) of a regular language from a given set of example...

\Sigma ^{*}} is called a regular partition if for every R ∈ π {\displaystyle R\in \pi } the language R {\displaystyle R} is regular. Let G = ( V , Σ , R ...

particular formal language are sometimes called well-formed words. A formal language is often defined by means of a formal grammar such as a regular grammar or...

nonterminal (left regular). These generate the same languages. However, if left-regular rules and right-regular rules are combined, the language need no longer...

family. One type of mixed language called pidgins occurs when adult speakers of two different languages interact on a regular basis, but in a situation...

Regular Show (known as Regular Show in Space during its eighth season) is an American animated sitcom created by J. G. Quintel for Cartoon Network. It...

formal languages, the star height is a measure for the structural complexity of regular expressions and regular languages. The star height of a regular expression...

These characters appear in the American animated television series Regular Show, created by J. G. Quintel for Cartoon Network. The series revolves around...

DFA; i.e., a DFA recognizing the same formal language. Like DFAs, NFAs only recognize regular languages. NFAs were introduced in 1959 by Michael O. Rabin...

input symbol x in Σ, δ(qi,x) ≠ δ(qj,x). A formal language is p-regular (also: a pure-group language) if it is accepted by a permutation automaton. For...

The Canons Regular of St. Augustine are Catholic priests who live in community under a rule (Latin: regula and κανών, kanon, in Greek) and are generally...

Unsolved problem in computer science Can all regular languages be expressed using generalized regular expressions with a limited nesting depth of Kleene...

L/R of L by a regular language R The context-free languages are not closed under intersection. This can be seen by taking the languages A = { a n b n...

acceptor. By definition, the languages accepted by acceptors are the regular languages. The problem of determining the language accepted by a given acceptor...

whether its language is regular, nor whether it is an LL(k) language for a given k.: 254  There are algorithms to decide whether the language of a given...

the input string will be accepted. The language recognized by M is the regular language given by the regular expression (1*) (0 (1*) 0 (1*))*, where...

formal language to be regular, and an exact count of the number of states in a minimal machine for the language. The pumping lemma for regular languages, also...

science and formal language theory, a regular tree grammar is a formal grammar that describes a set of directed trees, or terms. A regular word grammar can...

computer science and formal language theory, a regular language is said to be star-free if it can be described by a regular expression constructed from...

A regular verb is any verb whose conjugation follows the typical pattern, or one of the typical patterns, of the language to which it belongs. A verb...

Extensible Markup Language (XML) is a markup language and file format for storing, transmitting, and reconstructing data. It defines a set of rules for...

refers to a theorem that asserts that the set of ω-regular languages is identical to the set of languages recognizable by deterministic Muller automata. This...

star height problem in formal language theory is the question whether all regular languages can be expressed using regular expressions of limited star height...