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On the separability of sparse context-free languages and of bounded rational relations

✍ Scribed by Christian Choffrut; Flavio D’Alessandro; Stefano Varricchio


Book ID
108281319
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
228 KB
Volume
381
Category
Article
ISSN
0304-3975

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On the context-free production complexit
✍ Zsolt Tuza 📂 Article 📅 1987 🏛 Elsevier Science 🌐 English ⚖ 696 KB

The following problem is investigated. Let L be a given finite language, LcL,= {ub: I ~o,bsn, of/~}. Determine the minimal natural number c(L) such that L can be generated by c(L) context-free productions. Among others, max c(L) = O(n'/log n) is proved, and languages satisfying c(L) = IL) are charac