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...e languages|context-free]], just like the [[pumping lemma for context-free languages]]. * [[Pumping lemma for regular languages]] ...

In [[formal language]] theory, a '''leftist grammar''' is a [[formal grammar]] on which certain restrictions are made on the left and right side {{Formal languages and grammars}} ...

...anguage generated by iterated application of a splicing rule: the splicing languages form a proper subset of the [[regular language]]s. If ''R'' is a set of rules then ''R''(''L'') is the union of the languages produced by the rules of ''R''. We say that ''R'' ''respects'' ''L'' if '' ...

...athematics]], a '''locally catenative sequence''' is a sequence of [[word (formal language theory)|words]] in which each word can be constructed as the conca | title = Handbook of Formal Languages ...

== Formal definition == The class of unambiguously recognizable languages is exactly the same as the class of [[recursively enumerable language]]s (R ...

...J. D |authorlink2=Jeffrey Ullman |title=[[Introduction to Automata Theory, Languages, and Computation]] |year=1979 |edition=first |isbn=81-7808-347-7 |publisher [[Category:Formal languages]] ...

...raic expressions of a [[formal language]] over a finite [[Alphabet (formal languages)|alphabet]]. A ''non-commutative polynomial'' over ''A'' is a finite formal sum of words over ''A''. They form a semiring <math>R\langle A \rangle</ma ...

...eans of an [[intersection (set theory)|intersection]] and a [[Homomorphism#Formal language theory|homomorphism]]. A few notions from formal language theory are in order. ...

...they are studied in mathematics and theoretical computer science|computer languages that allow a function to call itself recursively |Recursion (computer scie ...total Turing machine]]s or '''algorithms'''.{{sfnp|Sipser|1997}} Recursive languages are also called '''decidable'''. ...

In mathematics, a '''local language''' is a [[formal language]] for which membership of a word in the language can be determined ...t=Caron |first=Pascal |date=2000-07-06 |title=Families of locally testable languages |url=https://www.sciencedirect.com/science/article/pii/S0304397598003326 |j ...

...ef> DCPSGs describe a superset of the [[Context-free language|context-free languages]], by means of rewrite rules that permit a limited amount of wrapping, simi {{Formal languages and grammars}} ...

==Formal properties== ...s)|weakly equivalent]] formalisms, in that they all define the same string languages. ...

...topological space]]. This notion allows the use of [[topology]] to study [[formal language|language]]s and finite [[semigroup]]s. For example, profinite word Let ''A'' be an [[Alphabet (formal languages)|alphabet]]. The set of profinite words over ''A'' consists of the [[Comple ...

'''WSML''' or '''Web Service Modeling Language''' is a [[formal language]] that provides a [[syntax]] and [[semantics]] for the [[WSMO|Web ...WSML - a Language Framework for Semantic Web Service. W3C Workshop on Rule Languages for Interoperability, Washington USA, 27–28 April 2005. http://dip.semantic ...

== Formal definition == *Thomas A. Sudkamp (2006). Languages and Machines, Third edition. Addison-Wesley. {{isbn|0-321-32221-5}}. Chapte ...

In [[theoretical computer science]] and [[formal language theory]], a '''ranked alphabet''' is a pair of an [[Alphabet (comp [[Category:Formal languages]] ...

...es [[system]]s of finite collections of [[formal grammar]]s generating a [[formal language]]. Each grammar works on a string, a so-called ''sequential form'' ...f possible behaviors of <math>\mathbb{A}</math> can then be described as [[formal language]] ...

...astaño (2004)<ref name="castano2004">Castaño, José M. 2004. ''Global Index Languages''. Dissertation, Brandeis University.</ref> in order to model a number of p ...set of the context sensitive languages, and a superset of the context free languages. It is known that GIGs can generate the MIX/Bach language <math>\{ p(a^n b^ ...

Languages generated by LMGs contain the context-free languages as a proper [[subset]], as every CFG is an LMG where all predicates have ar {{Formal languages and grammars}} ...

}}. (Also in ''Proceedings of the International Colloquium on Automata, Languages and Programming'', Graz, Lecture Notes in Computer Science 71, Springer-Ver | title = Formal Language Theory: Perspectives and Open Problems ...