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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-386</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>ОЦЕНКИ НОРМ СТЕПЕНЕЙ ОПЕРАТОРА, ПОРОЖДЕННОГО ИРРАЦИОНАЛЬНЫМ ПОВОРОТОМ</article-title><trans-title-group xml:lang="en"><trans-title>ESTIMATIONS OF THE NORM OF THE POWERS OF THE OPERATOR GENERATED BY IRRATIONAL ROTATION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Антоневич</surname><given-names>А. Б.</given-names></name><name name-style="western" xml:lang="en"><surname>Antonevich</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р физ.-мат. наук, профессор</p></bio><bio xml:lang="en"><p>D. Sc. (Physics and Mathematics), Professor</p></bio><email xlink:type="simple">antonevich@bsu.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шукур</surname><given-names>Али А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shukur</surname><given-names>Ali A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="en"><p>Postgraduate student</p></bio><email xlink:type="simple">shukur.math@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>02</day><month>03</month><year>2017</year></pub-date><volume>61</volume><issue>1</issue><fpage>30</fpage><lpage>35</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Антоневич А.Б., Шукур А., 2017</copyright-statement><copyright-year>2017</copyright-year><copyright-holder xml:lang="ru">Антоневич А.Б., Шукур А.</copyright-holder><copyright-holder xml:lang="en">Antonevich A.V., Shukur A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/386">https://doklady.belnauka.by/jour/article/view/386</self-uri><abstract><p>В работе рассмотрены операторы взвешенного сдвига, порожденные иррациональными поворотами. Получено описание поведения норм степеней таких операторов в зависимости от свойств коэффициента и арифметических свойств иррационального числа, задающего угол поворота.</p></abstract><trans-abstract xml:lang="en"><p>In this article we consider weighted shift operators generated by irrational rotation. The descreption of the norm of the powers of those operators depending on the properties of the cofficients of the mentioned operators and on the arithmeticals properties of the irrational number yielding an angle of rotation is given.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>нормы степеней оператора</kwd><kwd>оператор взвешенного сдвига</kwd><kwd>порожденный поворотом окруж- ности</kwd><kwd>гомологическое уравнение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>norm of powers of operator</kwd><kwd>weighted shift operator generated by rotation</kwd><kwd>homological equation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Antonevich, A. B. Linear functional equation. Operator approach / A. B. Antonevich. – Berlin: Birkhauser, 1996. – 187 р. doi.org/10.1007/978-3-0348-8977-3.</mixed-citation><mixed-citation xml:lang="en">Antonevich A. B. 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