<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">10.29235/1561-8323-2025-69-6-447-453</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-1279</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 одномерных квазилинейных параболических уравнений</article-title><trans-title-group xml:lang="en"><trans-title>Compact difference schemes for one-dimensional quasilinear parabolic 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>Матус</surname><given-names>П. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Matus</surname><given-names>P. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Матус Петр Павлович – член-корреспондент, д-р физ.-мат. наук, профессор, гл. науч. сотрудник</p><p>ул. Сурганова, 11, 220072, Минск </p></bio><bio xml:lang="en"><p>Matus Piotr P. – Corresponding Member, D. Sc. (Physics and Mathematics), Professor, Chief Researcher</p><p>11, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">piotr.p.matus@gmail.com</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>Утебаев</surname><given-names>Б. Д.</given-names></name><name name-style="western" xml:lang="en"><surname>Utebaev</surname><given-names>B. D.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Утебаев Бахадыр Даулетбай улы – канд. физ.-мат. наук, доцент</p><p>ул. Ч. Абдирова, 1, 230112, Нукус </p></bio><bio xml:lang="en"><p>Utebaev Bakhadir D. – Ph. D. (Physics and Mathematics), Associate Professor</p><p>1, Ch. Abdirov Str., 230112, Nukus </p></bio><email xlink:type="simple">bakhadir1992@gmail.com</email><xref ref-type="aff" rid="aff-2"/></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 Sciences of Belarus</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Каракалпакский государственный университет имени Бердаха</institution></aff><aff xml:lang="en"><institution>Karakalpak State University named after Berdakh</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>05</day><month>01</month><year>2026</year></pub-date><volume>69</volume><issue>6</issue><fpage>447</fpage><lpage>453</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Матус П.П., Утебаев Б.Д., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Матус П.П., Утебаев Б.Д.</copyright-holder><copyright-holder xml:lang="en">Matus P.P., Utebaev B.D.</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/1279">https://doklady.belnauka.by/jour/article/view/1279</self-uri><abstract><p>Предлагаются и исследуются компактные разностные схемы порядка аппроксимации 4 + 1 и 4 + 2 на минимальных шаблонах для одномерного нестационарного квазилинейного уравнения теплопроводности, не требующие итерационного процесса для их реализации. Вычислительный эффект достигается в результате распараллеливания метода прогонки по четным и нечетным узлам. Получены условия монотонности и доказаны двусторонние оценки разностного решения и априорные оценки в равномерной норме. Приводятся также вычислительные эксперименты, иллюстрирующие эффективность предложенных методов, а также их сходимость с соответствующим порядком.</p></abstract><trans-abstract xml:lang="en"><p>Compact finite difference schemes of approximation orders 4 + 1 and 4 + 2, constructed on minimal stencils, are presented and investigated for the one-dimensional non-stationary quasilinear heat equation, and do not require an iterative process for their implementation. The computational efficiency is achieved by parallelizing the Thomas algorithm over even and odd grid nodes. The monotonicity conditions are obtained and two-sided estimates of the difference solution and a priori estimates in the uniform norm are proved. Computational experiments are also presented to illustrate the effectiveness of the proposed methods, as well as their convergence with the corresponding order.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>компактная разностная схема</kwd><kwd>уравнение теплопроводности</kwd><kwd>погрешность аппроксимации</kwd><kwd>двусторонние оценки</kwd><kwd>равномерная норма</kwd></kwd-group><kwd-group xml:lang="en"><kwd>compact difference scheme</kwd><kwd>heat equation</kwd><kwd>approximation error</kwd><kwd>two-sided estimates</kwd><kwd>uniform norm</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа первого автора поддержана Белорусским республиканским фондом фундаментальных исследований (проект Ф25УЗБ-008), работа второго автора поддержана Министерством высшего образования, науки и инноваций Республики Узбекистан (проект FL-8824063232).</funding-statement><funding-statement xml:lang="en">The work of the first author was supported by the Belarusian Republican Foundation for Fundamental Research (project no. F25UZB-008), and the work of the second author was supported by the Ministry of Higher Education, Science and Innovation of the Republic of Uzbekistan (project no. FL-8824063232).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Lemeshevsky, S. Exact Finite-Difference Schemes / S. Lemeshevsky, P. Matus, D. Poliakov. – Berlin, 2016. https://doi.org/10.1515/9783110491326</mixed-citation><mixed-citation xml:lang="en">Lemeshevsky S., Matus P., Poliakov D. Exact Finite-Difference Schemes. Berlin, 2016. https://doi.org/10.1515/9783110491326</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Самарский, А. А. Схемы повышенного порядка точности для многомерного уравнения теплопроводности / А. А. Самарский // Журнал вычислительной математики и математической физики. – 1963. – Т. 3, № 5. – С. 812–840.</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A. Schemes of high-order accuracy for the multi-dimensional heat conduction equation. USSR Computational Mathematics and Mathematical Physics, 1963, vol. 3, no. 5, pp. 1107–1146. https://doi.org/10.1016/0041-5553(63)90104-6</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Толстых, А. И. Компактные разностные схемы и их применение в задачах аэрогидродинамики / А. И. Толстых. – М., 1990. – 230 с.</mixed-citation><mixed-citation xml:lang="en">Tolstykh A. I. Compact Finite Difference Schemes and Application in Aerodynamic Problems. Moscow, 1990. 230 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Компактные и монотонные разностные схемы для параболических уравнений / П. П. Матус, Б. Д. Утебаев // Математическое моделирование. – 2021. – Т. 33, № 4. – С. 60–78. https://doi.org/10.20948/mm-2021-04-04</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Utebaev B. D. Compact and monotone difference schemes for parabolic equations. Mathematical Models and Computer Simulations, 2021, vol. 13, pp. 1038–1048. https://doi.org/10.1134/s2070048221060132</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Компактные и монотонные разностные схемы для обобщенного уравнения Фишера / П. П. Матус, Б. Д. Утебаев // Дифференциальные уравнения. – 2022. – Т. 58, № 7. – С. 947–961.</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Utebaev B. D. Compact and monotone difference schemes for the generalized Fisher equation. Differential Equations, 2022, vol. 58, no. 7, pp. 937–951. https://doi.org/10.1134/s0012266122070072</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Монотонные схемы условной аппроксимации и произвольного порядка точности для уравнения переноса / П. П. Матус, Б. Д. Утебаев // Журнал вычислительной математики и математической физики. – 2022. – Т. 62, № 3. – С. 367–380.</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Utebaev B. D. Monotone schemes of conditional approximation and arbitrary order of accuracy for the transport equation. Computational Mathematics and Mathematical Physics, 2022, vol. 62, no. 3, pp. 359–371. https://doi.org/10.1134/S0965542522030101</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Матус, П. П. Консервативные компактные и монотонные разностные схемы четвертого порядка для квазилинейных уравнений / П. П. Матус, Г. Ф. Громыко, Б. Д. Утебаев // Доклады Национальной академии наук Беларуси. – 2024. – Т. 68, № 1. – С. 7–14. https://doi.org/10.29235/1561-8323-2024-68-1-7-14</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Gromyko G. Ph., Utebaev B. D. Conservative compact and monotone fourth order difference schemes for quasilinear equations. Doklady Natsional’noi akademii nauk Belarusi = Doklady of the National Academy of Sciences of Belarus, 2024, vol. 68, no. 1, pp. 7–14 (in Russian). https://doi.org/10.29235/1561-8323-2024-68-1-7-14</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Mohanty, R. K. High-precision numerical method for 1D quasilinear hyperbolic equations on a time-graded mesh: application to Telegraph model equation / R. K. Mohanty, B. P. Ghosh, G. Khurana // Soft Computing. – 2023. – Vol. 27. – P. 6095–6107. https://doi.org/10.1007/s00500-023-07909-3</mixed-citation><mixed-citation xml:lang="en">Mohanty R. K., Ghosh B. P., Khurana G. High-precision numerical method for 1D quasilinear hyperbolic equations on a time-graded mesh: application to Telegraph model equation. Soft Computing, 2023, vol. 27, pp. 6095–6107. https://doi.org/10.1007/s00500-023-07909-3</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Samarskii, A. A. Difference Schemes with Operator Factors / А. А. Samarskii, P. P. Matus, P. N. Vabishchevich. – London, 2002. https://doi.org/10.1007/978-94-015-9874-3</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A., Matus P. P., Vabishchevich P. N. Difference Schemes with Operator Factors. London, 2002. https://doi.org/10.1007/978-94-015-9874-3</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Самарский, А. А. Теория разностных схем / А. А. Самарский. – М., 1983. – 616 с.</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A. Theory of Difference Schemes. Moscow, 1983. 616 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Киреев, В. И. Численные методы в примерах и задачах / В. И. Киреев, А. В. Пантелеев. – М., 2008. – 480 с.</mixed-citation><mixed-citation xml:lang="en">Kireev V. I., Panteleev A. V. Numerical Methods in Examples and Problems. Moscow, 2008. 480 p. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Matus, P. On the consistent two-side estimates for the solutions of quasilinear convection-diffusion equations and their approximations on non-uniform grids / P. Matus, D. Poliakov, L. M. Hieu // Journal of Computational and Applied Mathematics. – 2018. – Vol. 340, N 1. – P. 571–581. https://doi.org/10.1016/j.cam.2017.09.020</mixed-citation><mixed-citation xml:lang="en">Matus P., Poliakov D., Hieu L. M. On the consistent two-side estimates for the solutions of quasilinear convectiondiffusion equations and their approximations on non-uniform grids. Journal of Computational and Applied Mathematics, 2018, vol. 340, no. 1, pp. 571–581. https://doi.org/10.1016/j.cam.2017.09.020</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Консервативные компактные и монотонные разностные схемы четвертого порядка для одномерных и двумерных квазилинейных уравнений / П. П. Матус, Г. Ф. Громыко, В. Д. Утебаев, В. Т. К. Туен // Дифференциальные уравнения. – 2025. – Т. 61, № 8. – С. 1117–1134. https://doi.org/10.7868/S3034503025080097</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Gromyko G. Ph., Utebaev B. D., Tuyen V. T. K. Conservative compact and monotone fourth order difference schemes for one-dimensional and two-dimensional quasilinear equations. Differential Equations, 2025, vol. 61, no. 8, pp. 1117–1134 (in Russian). https://doi.org/10.7868/S3034503025080097</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Tingchun, Wang. Convergence of an eight-order compact difference scheme for the nonlinear Schrödinger equation / Wang Tingchun // Advances in Numerical Analysis. – 2012. – Vol. 2012. – Art. 913429. https://doi.org/10.1155/2012/913429</mixed-citation><mixed-citation xml:lang="en">Tingchun Wang. Convergence of an eight-order compact difference scheme for the nonlinear Schrödinger equation. Advances in Numerical Analysis, 2012, vol. 2012, art. 913429. https://doi.org/10.1155/2012/913429</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
