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Sequences with constant number of return words

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F08%3A04148244" target="_blank" >RIV/68407700:21340/08:04148244 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Sequences with constant number of return words

  • Original language description

    An infinite word has the property R_m if every factor has exactly m return words. Vuillon showed that R_2 characterizes Sturmian words. We prove that a word satisfies R_m if its complexity function is (m-1)n+1 and if it contains no weak bispecial factor.These conditions are necessary for m=3, whereas for m=4, the complexity function need not be 3n+1. New examples of words satisfying R_m are given by words related to digital expansions in real bases.

  • Czech name

    Slova s konstantním počtem slov návratu

  • Czech description

    Nekonečné slovo má vlastnost R_m, pokud každý faktor má právě m slov návratu. Vuillon dokázal, že vlastnost R_2 charakterizuje sturmovská slova. My dokážeme, že slovo splňuje R_m tehdy, je-li jeho komplexita rovna (m-1)n+1 a zároveň neobsahuje žádné slabé bispeciály. Tyto podmínky jsou nutné pro m=3, zatímco pro m=4 komplexita nemusí být 3n+1. Jako nové příklady slov splňující R_m uvedeme některá ze slov kódující beta-celá čísla.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BA - General mathematics

  • OECD FORD branch

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2008

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Monatshefte für Mathematik

  • ISSN

    0026-9255

  • e-ISSN

  • Volume of the periodical

    155

  • Issue of the periodical within the volume

    3-4

  • Country of publishing house

    AT - AUSTRIA

  • Number of pages

    13

  • Pages from-to

  • UT code for WoS article

    000262858800003

  • EID of the result in the Scopus database