Title
Overlapping words, codes, disjunctivity and density of languages
Abstract
This paper reports on a study of some combinatorial properties of overlapping words and overlapping languages. A maximal overlapping subword v of u is an overlapping subword of u and any word of a longer length than the word v is not an overlapping subword of u. For a language L, the notation mo(u) and mo(L) are used to represent the maximal overlapping subword of u and the set {mo(u) | u∈L}, respectively. It is true that mo(fn)=fn-1 for each primitive word f and n≥2. It is also shown that for a language L, whether L is a prefix code can be determined by whether mo(L) is a prefix code, and that if mo(L) is dense it always implies that L is dense. Some results concerning a language L satisfying mo(L)=L are provided. Several characterizations between a word w and its overlapping language 〈 w〉 are presented.
Year
DOI
Venue
2008
10.1080/00207160701398029
Int. J. Comput. Math.
Keywords
Field
DocType
overlapping subword,overlapping language,primitive word,maximal overlapping subword v,language l,notation mo,prefix code,maximal overlapping subword,satisfying mo,overlapping word,satisfiability
Discrete mathematics,Notation,Mathematical analysis,Arithmetic,Prefix code,Mathematics
Journal
Volume
Issue
ISSN
85
2
0020-7160
Citations 
PageRank 
References 
0
0.34
4
Authors
3
Name
Order
Citations
PageRank
Kuo-Hsiang Chen119629.46
Zheng-Zhu Li2112.63
Yen-Shung Tsai311.07