Context-free grammars and nonnegative matrices
β Scribed by David Sankoff
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 269 KB
- Volume
- 5
- Category
- Article
- ISSN
- 0024-3795
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π SIMILAR VOLUMES
A new dynamical measure of the descriptional complexity for context-free grammars and languages, namely the degree of cooperation, is introduced and studied. This measure is connected with respect to both families of languages considered, namely the regular and context-free languages. We prove that
Besides this introduction the paper contains four sections. I n section 1 we describe three equivalent axiomatizations of NLP. the third one playing important role in what follows. I n section 2 we deal with a system AC: (the Ajdukiewicz calculus with product) and prove the equivalence of AC-grammar