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Theoretical Computer Science
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A metatheorem for undecidable properties of formal languages and its application to LRR and LLR grammars and languages

descriptionPublicationkeyboard_double_arrow_right Article 01 Feb 1983 English Publisher:Elsevier BVJournal:Computer Compacts, volume 1, page 53 (issn: 0167-7136, Copyright policy )
Authors: Stephan Heilbrunner;

doi: 10.1016/0167-7136(83)90162-2 , 10.1016/0304-3975(88)90008-4

A metatheorem for undecidable properties of formal languages and its application to LRR and LLR grammars and languages

Abstract

AbstractA metatheorem will be proved for decision problems which can be represented by pairs of simple grammars. Examples are given in support of the claim that the metatheorem has a wide range of applications. In particular, some relative decision problems concerning LR(k), LL-regular, and LR-regular grammars and languages are shown to be undecidable. In addition, iteration theorems are derived which allow the proof that certain languages are no: LL-regular of LR-regular.

Keywords

LL-regular language, LR-regular language, Formal languages and automata, Theory of compilers and interpreters, Post's correspondence problem, relative decision problems, Theoretical Computer Science, Computer Science(all)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
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Average
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