Title
Insertion and deletion closure of languages
Abstract
To a given language L , we associate the sets ins(L) (resp. del(L) ) consisting of words with the following property: their insertion into (deletion from) any word of L yields words which also belong to L . Properties of these sets and of languages which are insertion (deletion) closed are obtained. Of special interest is the case when the language is ins-closed (del-closed) and finitely generated. Then the minimal set of generators turns out to be a maximal prefix and suffix code, which is regular if L is regular. In addition, we study the insertion-base of a language and languages which have the property that both they and their complements are ins-closed.
Year
DOI
Venue
1997
10.1016/S0304-3975(96)00307-6
Theor. Comput. Sci.
Keywords
DocType
Volume
deletion closure
Journal
183
Issue
ISSN
Citations 
1
Theoretical Computer Science
10
PageRank 
References 
Authors
1.17
2
3
Name
Order
Citations
PageRank
Masami Ito129966.19
Lila Kari21123124.45
Gabriel Thierrin326334.89