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Power bounded operators and supercyclic vectors

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985840%3A_____%2F03%3A00106806" target="_blank" >RIV/67985840:_____/03:00106806 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Power bounded operators and supercyclic vectors

  • Original language description

    By the well-known result of Brown, Chevreau and Pearcy, every Hilbert space contraction with spectrum containing the unit circle has a nontrivial closed invariant subspace. Equivalently, there is a nonzero vector which is not cyclic. We show that each power bounded operator on a Hilbert space with spectral radius equal to one has a nonzero vector which is not supercyclic. Equivalently, the operator has a nontrivial closed invariant homogeneous subset.

  • Czech name

    Operátory s ohraničenými mocninami a supercyklické vektory

  • Czech description

    Podle známé věty ( Brown-Chevreau-Pearcy ) každá kontrakce na Hilbertově prostoru, jejíž spektrum obsahuje jednotkovou kružnici, má netriviální invariantní podprostor. Tj. existuje nenulový necyklický vektor. Zde je ukázáno, že každý operátor s ohraničenými mocninami, jehož spektrální poloměr je roven 1, má nenulový vektor, který není supercyklický.

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

    <a href="/en/project/GA201%2F03%2F0041" target="_blank" >GA201/03/0041: Methods and function theory of Banach algebras in operator theory II.</a><br>

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2003

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Proceedings of the American Mathematical Society

  • ISSN

    0002-9939

  • e-ISSN

  • Volume of the periodical

    131

  • Issue of the periodical within the volume

    12

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    6

  • Pages from-to

    3807-3812

  • UT code for WoS article

  • EID of the result in the Scopus database