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<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Archiving and Interchange DTD with OASIS Tables with MathML3 v1.4 20241031//EN" "https://jats.nlm.nih.gov/archiving/1.4/JATS-archive-oasis-article1-4-mathml3.dtd">
<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" dtd-version="1.4" article-type="research-article" xml:lang="en"><front><journal-meta><journal-title-group><journal-title xml:lang="ru">Дальневосточный математический журнал</journal-title></journal-title-group><issn publication-format="print">1608-845X</issn></journal-meta><article-meta><article-id pub-id-type="doi">10.47910/FEMJ202603</article-id><article-categories><subj-group><subject>Other</subject></subj-group></article-categories><title-group><article-title xml:lang="ru">Построение высокоточных разностных схем для нагруженных волновых дифференциальных уравнений с граничными условиями первого рода</article-title><trans-title-group xml:lang="en"><trans-title>Construction of high-accuracy finite difference schemes for loaded wave differential equations with boundary conditions of the first kind</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="ru"><surname>Бештоков</surname><given-names>М. Х.</given-names></name><name xml:lang="en"><surname>Beshtokov</surname><given-names>M. KH.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/><email>beshtokov-murat@yandex.ru</email><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2968-9211</contrib-id></contrib><aff-alternatives id="aff1"><aff><institution xml:lang="en">nstitute of Applied Mathematics and Automation of the Kabardino-Balkarian Scientific Center of the Russian Academy of Sciences</institution><city xml:lang="en">Nalchik</city><country xml:lang="en">Russia</country></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="ru">Институт прикладной математики и автоматизации КБНЦ РАН</institution><city xml:lang="ru">Нальчик</city><country xml:lang="ru">Россия</country></aff></aff-alternatives></contrib-group><pub-date pub-type="epub" iso-8601-date="2026-06-15"><day>15</day><month>06</month><year>2026</year></pub-date><volume>1</volume><issue>26</issue><fpage>22</fpage><lpage>35</lpage><history><date date-type="received" iso-8601-date="2025-04-15"><day>15</day><month>04</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2026-05-25"><day>25</day><month>05</month><year>2026</year></date></history><permissions><license xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:title="CC BY 4.0"><ali:license_ref>https://creativecommons.org/licenses/by/4.0/</ali:license_ref><license-p xml:lang="ru">CC BY 4.0</license-p></license></permissions><self-uri xlink:href="http://femj.iam.dvo.ru/periodical.php?art=570" xlink:title="http://femj.iam.dvo.ru/periodical.php?art=570">http://femj.iam.dvo.ru/periodical.php?art=570</self-uri><self-uri content-type="pdf" xlink:href="publication-a84e925b-1879-48e0-b4d3-1e918905d951.pdf" xlink:title="PDF"/><abstract xml:lang="ru"><p>В прямоугольной области изучены первая начально-краевая задача для одномерных по пространству нагруженных волновых уравнений. Для численного решения исходных задач построены разностные схемы повышенного порядка точности, аппроксимирующие эти задачи на равномерной сетке. Методом энергетических неравенств выведены оценки решений задач в разностной трактовке. Из полученных априорных оценок следуют единственность, а также непрерывная и равномерная зависимость решения от входных данных рассматриваемых задач и, в силу линейности рассматриваемой задачи, сходимость решения разностной задачи к решению соответствующей дифференциальной задачи со скоростью сходимости $O(h^4+\tau^2)$.</p></abstract><abstract xml:lang="en" abstract-type="summary"><p>In a rectangular domain, the first initial-boundary value problem for one-dimensional loaded wave equations is studied. For the numerical solution of the initial problems, difference schemes of increased order of accuracy are constructed, approximating these problems on a uniform grid. The method of energy inequalities is used to derive estimates of solutions to problems in the difference interpretation. From the obtained a priori estimates follow the uniqueness, as well as the continuous and uniform dependence of the solution on the input data of the problems under consideration and, due to the linearity of the problem under consideration, the convergence of the solution of the difference problem to the solution of the corresponding differential problem with the convergence in the rate of $O(h^4+\tau^2)$.</p></abstract><kwd-group xml:lang="ru"><kwd>первая начально-краевая задача</kwd><kwd>волновое уравнение</kwd><kwd>нагруженное уравнение</kwd><kwd>априорная оценка</kwd><kwd>разностная схема повышенного порядка точности</kwd><kwd>устойчивость и сходимость схем</kwd></kwd-group><kwd-group xml:lang="en"><kwd>first initial-boundary value problem</kwd><kwd>wave equation</kwd><kwd>loaded equation</kwd><kwd>a priori estimate</kwd><kwd>difference schemes of increased order of accuracy</kwd><kwd>stability and convergence of schemes</kwd></kwd-group></article-meta></front><back><ref-list><ref id="ref1"><mixed-citation publication-type="other" xml:lang="ru">Абдуллаев B. 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