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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 custom-type="elpub" pub-id-type="custom">dan-136</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>ПРИНЦИП МАКСИМУМА ДЛЯ РАЗНОСТНЫХ СХЕМ С НЕЗНАКОПОСТОЯННЫМИ ВХОДНЫМИ ДАННЫМИ</article-title><trans-title-group xml:lang="en"><trans-title>MAXIMUM PRINCIPLE FOR FINITE-DIFFERENCE SCHEMES WITH NON SIGH-CONSTANT INPUT DATA</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><email xlink:type="simple">matus@im.bas-net.by</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>ХИЕУ</surname><given-names>Л. М.</given-names></name><name name-style="western" xml:lang="en"><surname>HIEU</surname><given-names>L. M.</given-names></name></name-alternatives><email xlink:type="simple">lmhieuktdn@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>ВОЛКОВ</surname><given-names>Л. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>VULKOV</surname><given-names>L. G.</given-names></name></name-alternatives><email xlink:type="simple">lvalkov@uni-ruse.bg</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Католический университет, Люблин</institution></aff><aff xml:lang="en"><institution>The John Paul II Catholic Univercity of Lublin</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский государственный университет, Минск</institution></aff><aff xml:lang="en"><institution>Belarusian State University, Minsk</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Русенский университет</institution></aff><aff xml:lang="en"><institution>«Angel Kanchev» University of Ruse, Ruse</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>06</day><month>06</month><year>2016</year></pub-date><volume>59</volume><issue>5</issue><fpage>13</fpage><lpage>17</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; МАТУС П.П., ХИЕУ Л.М., ВОЛКОВ Л.Г., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">МАТУС П.П., ХИЕУ Л.М., ВОЛКОВ Л.Г.</copyright-holder><copyright-holder xml:lang="en">MATUS P.P., HIEU L.M., VULKOV L.G.</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/136">https://doklady.belnauka.by/jour/article/view/136</self-uri><abstract><p>В настоящей работе для так называемой канонической формы записи разностной схемы общего вида при обычных условиях положительности коэффициентов уравнения получены двусторонние оценки сеточного решения при произвольных незнакопостоянных входных данных задачи. Полученные результаты применяются для получения двусторонних оценок конкретных монотонных разностных схем, аппроксимирующих начально-краевую задачу для квазилинейного параболического уравнения типа конвекции диффузии, а также для исследования корректности Гамма уравнения, используемого при описании опционной цены в финансовой математике.</p></abstract><trans-abstract xml:lang="en"><p>In this article, for the so-called canonical form of a difference scheme under usual positivity conditions on the equation coefficients two-sided estimates for the approximate solution are obtained at the arbitrary non sigh-constant input data of the problem. The obtained results are used both for deriving two-sided estimates of monotone difference schemes, which approximate the initial boundary-value problem for the quasi-linear parabolic convection-diffusion equation, and for studying the correctness of the Gamma equation that is used for describing the option price in financial mathematics.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>принцип максимума</kwd><kwd>монотонная разностная схема</kwd><kwd>квазилинейное параболическое уравнение</kwd><kwd>Гамма-уравнение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>maximum principle</kwd><kwd>monotone difference scheme</kwd><kwd>quasi-linear parabolic equation</kwd><kwd>Gamma equation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Владимиров, В. С. Уравнения математической физики / В. С. 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Math. and Comput. – 2013. – Vol. 220. – P. 722–734.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Фридман, А. Уравнения с частными производными параболического типа / А. Фридман. – М.: Издательство «Мир», 1968.</mixed-citation><mixed-citation xml:lang="en">Фридман, А. Уравнения с частными производными параболического типа / А. Фридман. – М.: Издательство «Мир», 1968.</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>
