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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 pub-id-type="doi">10.29235/1561-8323-2018-62-3-263-267</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-516</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>О СИЛЬНО НЕРЕГУЛЯРНЫХ ПЕРИОДИЧЕСКИХ РЕШЕНИЯХ ЛИНЕЙНОГО  ОДНОРОДНОГО ДИСКРЕТНОГО УРАВНЕНИЯ ПЕРВОГО ПОРЯДКА</article-title><trans-title-group xml:lang="en"><trans-title>STRONGLY IRREGULAR PERIODIC SOLUTIONS OF THE FIRST-ORDER LINEAR  HOMOGENEOUS DISCRETE EQUATION</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>Деменчук</surname><given-names>А. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Demenchuk</surname><given-names>A. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Деменчук Александр Константинович – д-р физ.-мат. наук, доцент, вед. науч. сотрудник.</p><p>ул. Сурганова, 11, 220072, Минск.</p></bio><bio xml:lang="en"><p>Demenchuk Aleksandr Konstantinovich – D. Sc. (Physics and Mathematics), Assistant Professor, Leading Researcher. </p><p>11, Surganov Str., 220072, Minsk.</p></bio><email xlink:type="simple">demenchuk@im.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики Национальной академии наук Беларуси.</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Science of Belarus.</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2018</year></pub-date><volume>62</volume><issue>3</issue><fpage>263</fpage><lpage>267</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Деменчук А.К., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Деменчук А.К.</copyright-holder><copyright-holder xml:lang="en">Demenchuk A.K.</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/516">https://doklady.belnauka.by/jour/article/view/516</self-uri><abstract><p> В 1950 г. Х. Массера доказал, что скалярное периодическое обыкновенное дифференциальное уравнение первого порядка не имеет сильно нерегулярных периодических решений, т. е. таких, что период решения несоизмерим с периодом уравнения. Для разностных уравнений с дискретным временем сильная нерегулярность означает, что период уравнения является взаимно простым по отношеню к периоду его решения. Известно, что в случае дискретных уравнений упомянутый результат Х. Массеры полного аналога не имеет.</p><p>Цель работы – исследовать возможность реализации аналога теоремы Х. Массеры для некоторых классов разностных уравнений. Для этого рассматривается класс линейных разностных уравнений. Доказано, что линейное однородное нестационарное периодическое дискретное уравнение первого порядка не имеет сильно нерегулярных периодических решений, отличных от постоянных.</p></abstract><trans-abstract xml:lang="en"><p> In 1950 J. Massera proved that a fi rst-order scalar periodic ordinary differential equation has no strongly ira proved that a first-order scalar periodic ordinary differential equation has no strongly irregular periodic solutions, that is, such solutions whose period of solution is incommensurable with the period of equation. For difference equations with discrete time, strong irregularity means that the period of the equation and the period of its solution are relatively prime numbers. It is known that in the case of discrete equations, the above result of J. Massera has no complete analog.</p><p>The purpose of this article is to investigate the possibility to realize Massera’s theorem for certain classes of difference equations. To do this, we consider the class of linear difference equations. It is proved that a first-order linear homogeneous non-stationary periodic discrete equation has no strongly irregular non-stationary periodic solutions.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>периодические разностные уравнения</kwd><kwd>периодические последовательности</kwd><kwd>сильно нерегулярные периодические решения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>difference periodic equations</kwd><kwd>periodic sequences</kwd><kwd>strongly irregular periodic solutions</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">Agarwal, R. P. Difference Equations and Inequalities. Theory, Methods and Applications / R. P. Agarwal. – New York: Marcel Dekker, Inc., 1992. – 777 p.</mixed-citation><mixed-citation xml:lang="en">Agarwal R. P. Difference Equations and Inequalities. Theory, Methods and Applications. 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