Results 21 to 30 of about 2,178 (219)

Quasiperiodic and Lyndon episturmian words [PDF]

open access: yes, 2008
Recently the second two authors characterized quasiperiodic Sturmian words, proving that a Sturmian word is non-quasiperiodic if and only if, it is an infinite Lyndon word.
Amy Glen   +8 more
core   +2 more sources

On morphisms preserving infinite Lyndon words [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2007
In a previous paper, we characterized free monoid morphisms preserving finite Lyndon words. In particular, we proved that such a morphism preserves the order on finite words.
Gwenael Richomme
doaj   +1 more source

Ohne Frage? Mit Sicherheit. Präpositionale Wortverbindungen als Ausdrucksformen der Sprechereinstellung / Ohne Frage? Mit Sicherheit. Preposition-noun Phrases as Expressive Form of Speaker Attitude [PDF]

open access: yesLinguistische Treffen in Wrocław, 2020
Usualisierte Mehrworteinheiten stellen ein breites, strukturell und semantisch sehr heterogenes Spektrum von sprachlichen Elementen dar. Das Thema des Beitrags fokussiert die Problematik der lexikalisch-syntagmatischen Kombinatorik von usuellen ...
Monika Hornáček Banášová
doaj   +1 more source

Rich, Sturmian, and trapezoidal words [PDF]

open access: yes, 2008
In this paper we explore various interconnections between rich words, Sturmian words, and trapezoidal words. Rich words, first introduced by the second and third authors together with J. Justin and S. Widmer, constitute a new class of finite and infinite
Zamboni, L.   +7 more
core   +2 more sources

Frequency-Hopping Sequences With Optimal Average Hamming Correlation and Their Applications in Energy and Spectrum Harvesting Technologies Area

open access: yesIEEE Access, 2021
The research of cyclotomy theory can be traced to Gauss and it has been applied to many fields such as cryptography, coding theory, and combinatorics. According to $v$ prime numbers or compound words, the incision on the residue-like ring ${\mathbb Z ...
Mingyue Fan
doaj   +1 more source

Episturmian words: a survey [PDF]

open access: yes, 2007
In this paper, we survey the rich theory of infinite episturmian words which generalize to any finite alphabet, in a rather resembling way, the well-known family of Sturmian words on two letters.
Justin, J.   +5 more
core   +2 more sources

On the Entropy of a Two Step Random Fibonacci Substitution

open access: yesEntropy, 2013
We consider a random generalization of the classical Fibonacci substitution. The substitution we consider is defined as the rule mapping, a → baa and b → ab, with probability , and  → ba, with probability 1 – p for 0 < p < 1, and where the random rule is
Johan Nilsson
doaj   +1 more source

How often do we reject a superior value? (Extended abstract) [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2011
Words $a_1 a_2 \ldots a_n$ with independent letters $a_k$ taken from the set of natural numbers, and a weight (probability) attached via the geometric distribution $pq^{i-1}(p+q=1)$ are considered.
Kamilla Oliver, Helmut Prodinger
doaj   +1 more source

Directive words of episturmian words: equivalences and normalization [PDF]

open access: yes, 2008
Episturmian morphisms constitute a powerful tool to study episturmian words. Indeed, any episturmian word can be infinitely decomposed over the set of pure episturmian morphisms.
Amy Glen   +8 more
core   +2 more sources

Conjugates of characteristic Sturmian words generated by morphisms [PDF]

open access: yes, 2004
This article is concerned with characteristic Sturmian words of slope α and 1-α (denoted by cα and c1-α resp.), where α∈(0,1) is an irrational number such that α=[0;1+d1,d2,..., dn] with dn≥d1≥1.
Glen, Amy   +3 more
core   +2 more sources

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