Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/11225
Title: Some Applications of the Formalization of the Pumping Lemma for Context-Free Languages
Authors: José Bacelar Almeida
Ramos,MVM
Moreira,N
de Queiroz,RJGB
Issue Date: 2019
Abstract: Context-free languages are highly important in computer language processing technology as well as in formal language theory. The Pumping Lemma for Context-Free Languages states a property that is valid for all context-free languages, which makes it a tool for showing the existence of non-context-free languages. This paper presents a formalization, extending the previously formalized Lemma, of the fact that several well-known languages are not context-free. Moreover, we build on those results to construct a formal proof of the well-known property that context-free languages are not closed under intersection. All the formalization has been mechanized in the Coq proof assistant.
URI: http://repositorio.inesctec.pt/handle/123456789/11225
http://dx.doi.org/10.1016/j.entcs.2019.07.010
metadata.dc.type: Publication
conferenceObject
Appears in Collections:HASLab - Articles in International Conferences

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