A characterization of local regular languages
β Scribed by S.S. Yu
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 458 KB
- Volume
- 184
- Category
- Article
- ISSN
- 0012-365X
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β¦ Synopsis
As every non-empty word is a power of a unique primitive word, a set of primitive roots of a language is like an independent subset of a vector space. A language having finitely many primitive roots is called a local language. The purpose of this paper is to characterize local regular languages. We show that whether a regular language is local or not is decidable. In the meanwhile, two characterizations of local regular languages are derived. (~
π SIMILAR VOLUMES
LANGAGE is a set of procedures for deciding whether or not a language given by its minimal automaton is piecewise testable, locally testable, strictly locally testable, or strongly locally testable. New polynomial algorithms are implemented for the two last properties. This package is written using
A language is regular if it can be recognized by a ΓΏnite automaton. According to the pumping lemma, every inΓΏnite regular language contains a regular subset of the form uv + w, where u; v; w are words and v is not empty. It is known that every regular language can be expressed as ( iβI uiv + i wi) βͺ