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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">30849</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2022-68-1-25-40</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">An Algebraic Condition for the Exponential Stability of an Upwind Difference Scheme for Hyperbolic Systems</article-title><trans-title-group xml:lang="ru"><trans-title>Алгебраическое условие экспоненциальной устойчивости противопоточной разностной схемыдля гиперболических систем</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Aloev</surname><given-names>R. D.</given-names></name><name xml:lang="ru"><surname>Алаев</surname><given-names>Р. Д.</given-names></name></name-alternatives><email>aloevr@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Nematova</surname><given-names>D. E.</given-names></name><name xml:lang="ru"><surname>Нематова</surname><given-names>Д. Е.</given-names></name></name-alternatives><email>nematova_dilfuza@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National University of Uzbekistan</institution></aff><aff><institution xml:lang="ru">Национальный университет Узбекистана им. М. Улугбека</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2022-04-20" publication-format="electronic"><day>20</day><month>04</month><year>2022</year></pub-date><volume>68</volume><issue>1</issue><issue-title xml:lang="en">Science — Technology — Education — Mathematics — Medicine</issue-title><issue-title xml:lang="ru">Наука — технология — образование — математика — медицина</issue-title><fpage>25</fpage><lpage>40</lpage><history><date date-type="received" iso-8601-date="2022-04-20"><day>20</day><month>04</month><year>2022</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2022, Contemporary Mathematics. Fundamental Directions</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2022, Современная математика. Фундаментальные направления</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="en">Contemporary Mathematics. Fundamental Directions</copyright-holder><copyright-holder xml:lang="ru">Современная математика. Фундаментальные направления</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc-nd/4.0/deed.en</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/30849">https://journals.rudn.ru/CMFD/article/view/30849</self-uri><abstract xml:lang="en"><p style="text-align: justify;">In the paper, we investigate the question of obtaining the algebraic condition for the exponential stability of the numerical solution of the upwind difference scheme for the mixed problem posed for onedimensional symmetric <italic>t</italic>-hyperbolic systems with constant coefficients and with dissipative boundary conditions. An a priori estimate for the numerical solution of the boundary-value difference problem is obtained. This estimate allows us to state the exponential stability of the numerical solution. A theorem on the exponential stability of the numerical solution of the boundary-value difference problem is proved. Easily verifiable algebraic conditions for the exponential stability of the numerical solution are given. The convergence of the numerical solution is proved.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">В работе исследуется вопрос о получении алгебраического условия экспоненциальной устойчивости численного решения противопоточной разностной схемы для смешанной задачи, поставленной для одномерных симметричных <italic>t</italic> -гиперболических систем с постоянными коэффициентами и с диссипативными граничными условиями. Получена априорная оценка численного решения краевой разностной задачи. Эта оценка позволяет установить экспоненциальную устойчивость численного решения. Доказана теорема об экспоненциальной устойчивости численного решения краевой разностной задачи. Даны легко проверяемые алгебраические условия экспоненциальной устойчивости численного решения. Доказана сходимость численного решения.</p></trans-abstract><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Алаев Р. Д., Худайберганов М. У. Дискретный аналог функции Ляпунова для гиперболических систем// Соврем. мат. Фундам. направл. - 2018. -64, № 4. - С. 591-602.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Блохин А. М., Алаев Р. Д. Интегралы энергии и их приложения к исследованию устойчивости разностных схем. - Новосибирск: Изд-во Новосибирского гос. ун-та, 1993.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Го дунов С. К. 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