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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">10.29235/1561-8323-2022-66-1-12-20</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1033</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>Компактные разностные схемы для многомерного уравнения Клейна–Гордона</article-title><trans-title-group xml:lang="en"><trans-title>Compact difference schemes for multidimensional Klein–Gordon equations</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>Хоанг</surname><given-names>Тхи Киеу Ань</given-names></name><name name-style="western" xml:lang="en"><surname>Hoang</surname><given-names>Thi Kieu Anh</given-names></name></name-alternatives><bio xml:lang="ru"><p>Хоанг Тхи Киеу Ань – аспирант.</p><p>Пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Hoang Thi Kieu Anh – Postgraduate student.</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">kieuanhhoang86@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; Университет природных ресурсов и окружающей среды</institution></aff><aff xml:lang="en"><institution>Belarusian State University; Ho Chi Minh City University of Natural Resources and Environment</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>09</day><month>03</month><year>2022</year></pub-date><volume>66</volume><issue>1</issue><fpage>12</fpage><lpage>20</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хоанг Т., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Хоанг Т.</copyright-holder><copyright-holder xml:lang="en">Hoang T.</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/1033">https://doklady.belnauka.by/jour/article/view/1033</self-uri><abstract><p>В настоящей работе рассматриваются компактные разностные схемы порядка O(| h|4 +  τ2) для уравнения Клейна–Гордона в многомерном случае. При изучении устойчивости этих разностных схем используется теория операторно-разностных схем А. А. Самарского и доказывается сильная устойчивость разностного решения по отношению к малому возмущению начальных условий, правой части и коэффициентов уравнений. Теоретические результаты подтверждаются тестовыми численными расчетами.</p></abstract><trans-abstract xml:lang="en"><p>Abstract. In this article, we consider a compact difference approximation of the schemes of order O(| h|4  +  τ2), h = (h1, h2, ..., hp) for the Klein–Gordon equations in the multidimensional case. In studying the stability of these difference schemes, the theory of operator-difference schemes by A. A. Samarskii is used, and the strong stability of difference schemes is proved with respect to a small perturbation of the initial conditions, the right-hand side and the coefficients of the equations. The theoretical results are confirmed by test numerical calculations.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компактная разностная схема</kwd><kwd>многомерное уравнение Клейна–Гордона</kwd><kwd>априорные оценки</kwd><kwd>устойчивость</kwd><kwd>сходимость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>compact difference schemes</kwd><kwd>multidimentional Klein–Gordon equation</kwd><kwd>priori estimates</kwd><kwd>stability</kwd><kwd>convergence</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Автор выражает благодарность профессору П.П. Матусу за внимание к работе и полезные советы, полученные при подготовке настоящей работы</funding-statement><funding-statement xml:lang="en">The author expresses her sincere gratitude to Professor P.P. 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