Title
Morphically primitive words
Abstract
In the present paper, we introduce an alternative notion of the primitivity of words, that-unlike the standard understanding of this term-is not based on the power (and, hence, the concatenation) of words, but on morphisms. For any alphabet @S, we call a word w@?@S^*morphically imprimitive provided that there are a shorter word v and morphisms h,h^':@S^*-@S^* satisfying h(v)=w and h^'(w)=v, and we say that w is morphically primitive otherwise. We explain why this is a well-chosen terminology, we demonstrate that morphic (im-) primitivity of words is a vital attribute in many combinatorial domains based on finite words and morphisms, and we study a number of fundamental properties of the concepts under consideration.
Year
DOI
Venue
2009
10.1016/j.tcs.2009.01.020
Theor. Comput. Sci.
Keywords
DocType
Volume
Combinatorics on words,fundamental property,standard understanding,Primitivity,shorter word v,satisfying h,Fixed points,morphisms h,Morphically primitive word,Morphisms,present paper,finite word,alternative notion,word w,morphically imprimitive
Journal
410
Issue
ISSN
Citations 
21-23
Theoretical Computer Science
9
PageRank 
References 
Authors
0.82
4
2
Name
Order
Citations
PageRank
Daniel Reidenbach115418.06
Johannes C. Schneider2323.52