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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">mathnas</journal-id><journal-title-group><journal-title xml:lang="ru">Труды Института математики НАН Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Institute of Mathematics of the NAS of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1812-5093</issn><publisher><publisher-name>Институт математики НАН Беларуси</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">mathnas-42</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>ВЫЧИСЛИТЕЛЬНАЯ МАТЕМАТИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>COMPUTATIONAL MATHEMATICS</subject></subj-group></article-categories><title-group><article-title>Разрушение решения разностных схем, аппроксимирующих задачи Неймана для нелинейных параболических уравнений</article-title><trans-title-group xml:lang="en"><trans-title>Blow-up in difference schemes that approximate Neumann problems for nonlinear 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>Щадинский</surname><given-names>Д. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Schadinskii</surname><given-names>D. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Минск</p></bio><bio xml:lang="en"><p>Minsk</p></bio><email xlink:type="simple">schadinskii@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики НАН Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Mathematics of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>03</day><month>03</month><year>2025</year></pub-date><volume>32</volume><issue>2</issue><fpage>43</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Щадинский Д.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Щадинский Д.А.</copyright-holder><copyright-holder xml:lang="en">Schadinskii D.A.</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://mathnas.ejournal.by/jour/article/view/42">https://mathnas.ejournal.by/jour/article/view/42</self-uri><abstract><p>На основе дискретного аналога теорем сравнения и неравенства Йенсена в статье получены условия разрушения решения и верхние оценки времени разрушения решения неявных разностных схем, которые аппроксимируют задачи Неймана для различных нелинейных параболических уравнений. Приводятся условия разрушения решения и верхняя оценка времени разрушения решения для аппроксимируемых дифференциальных задач, полученные на основе теорем сравнения и неравенства Йенсена</p></abstract><trans-abstract xml:lang="en"><p>In this paper, based on the discrete analogue of comparison theorems and Jensen's inequality, blow-up conditions and upper bound of blow-up time of the solution of implicit finite-different problem which approximates Neumann problems for various nonlinear parabolic equations are obtained. Blow-up conditions and upper bound of blow-up time of approximated differential problems are given, which are obtained and based on comparison theorems and Jensen's inequality</p></trans-abstract><kwd-group xml:lang="ru"><kwd>теоремы сравнения</kwd><kwd>разрушение решения</kwd><kwd>дискретные аналоги теорем сравнения</kwd><kwd>задача Неймана</kwd><kwd>нелинейные параболические уравнения</kwd></kwd-group><kwd-group xml:lang="en"><kwd>comparison theorems</kwd><kwd>blow-up</kwd><kwd>discrete analogue of comparison theorems</kwd><kwd>nonlinear parabolic equations</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа поддержана Институтом математики НАН Беларуси в рамках государственной программы «Конвергенция–2025» (проект 2021025).</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">Fujita H. On the blowing up of solutions of the Cauchy problem for ut = ∆u + u1+α // J. Fac. Sci., Univ. Tokyo, Sect. I. 1966. Vol. 13. P. 109–124.</mixed-citation><mixed-citation xml:lang="en">Fujita H. On the blowing up of solutions of the Cauchy problem for ut = ∆u + u1+α. J. Fac. Sci., Univ. Tokyo, Sect. I., 1966, vol. 13, pp. 109–124.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Levine H. A. Some nonexistence and instability theorems for solutions of formally parabolic equations of the form Put = −Au + F(u) // Arch. Ration. Mech. Anal. 1973. Vol. 51. P. 371–386.</mixed-citation><mixed-citation xml:lang="en">Levine H. A. Some nonexistence and instability theorems for solutions of formally parabolic equations of the form Put = −Au + F(u). Arch. Ration. Mech. Anal., 1973, vol. 51, pp. 371–386.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Nakagawa T. Blowing up of a finite difference solution to ut = uxx + u2 // Appl. Math. Optim. 1976. Vol. 2. P. 337–350.</mixed-citation><mixed-citation xml:lang="en">Nakagawa T. Blowing up of a finite difference solution to ut = uxx + u2. Appl. Math. Optim., 1976, vol. 2, pp. 337–350.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Chen Y. Asymptotic behaviours of blowing-up solutions for finite difference analogue of ut = uxx + u1+α // J. Fac. Sci., Univ. Tokyo, Sect. I A. 1986. Vol. 33. P. 541–574.</mixed-citation><mixed-citation xml:lang="en">Chen Y. Asymptotic behaviours of blowing-up solutions for finite difference analogue of ut = uxx + u1+α. J. Fac. Sci., Univ. Tokyo, Sect. I A., 1986, vol. 33, pp. 541–574.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Hartman P. Ordinary differential equations. New York; London; Sydney: John Wiley and Sons, Inc. 1964. 612 p.</mixed-citation><mixed-citation xml:lang="en">Hartman P. Ordinary differential equations. New York, London, Sydney, John Wiley and Sons, Inc. 1964, 612 p.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Самарский А. А., Галактионов В. А., Курдюмов С. П., Михайлов А. П. Режимы с обострением в задачах для квазилинейных параболических уравнений. Москва: Наука, 1987. 480 с.</mixed-citation><mixed-citation xml:lang="en">Samarskii A. A., Galaktionov V. A., Kurdyumov S. P., Mikhailov A. P. Blow-Up in Quasilinear Parabolic Equations. Berlin, New York, De Gruyter, 1995, 554 p.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Матус П. П., Парадинска А., Щадинский Д. А. Дискретные аналоги теорем сравнения и их применение // Докл. Нац. акад. наук Беларуси. 2013. Т. 57, № 4. С. 16–20.</mixed-citation><mixed-citation xml:lang="en">Matus P. P., Paradzinska A., Schadinsky D. A. Discrete analogs of the theorems comparison and their applications. Doklady of the National Academy of Sciences of Belarus, 2013, vol. 57, no. 4, pp. 16–20. (in Russian).</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>
