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Nonterminal complexity of one-sided random context grammars

โœ Scribed by Alexander Meduna; Petr Zemek


Book ID
113024016
Publisher
Springer-Verlag
Year
2012
Tongue
English
Weight
197 KB
Volume
49
Category
Article
ISSN
0001-5903

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๐Ÿ“œ SIMILAR VOLUMES


One-sided random context grammars
โœ Alexander Meduna; Petr Zemek ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› Springer-Verlag ๐ŸŒ English โš– 199 KB
Nonterminal complexity of programmed gra
โœ Henning Fernau ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 228 KB

We show that, in the case of context-free programmed grammars with appearance checking working under free derivations, three nonterminals are enough to generate every recursively enumerable language. This improves the previously published bound of eight for the nonterminal complexity of these gramma