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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 pub-id-type="doi">10.29235/1561-8323-2018-62-4-398-405</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-533</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>АСИМПТОТИЧЕСКИЕ РАЗЛОЖЕНИЯ РЕШЕНИЙ СТОХАСТИЧЕСКИХ ДИФФЕРЕНЦИАЛЬНЫХ УРАВНЕНИЙ С ДРОБНЫМИ БРОУНОВСКИМИ ДВИЖЕНИЯМИ</article-title><trans-title-group xml:lang="en"><trans-title>ASYMPTOTIC EXPANSIONS OF SOLUTIONS OF STOCHASTIC DIFFERENTIAL EQUATIONS DRIVEN BY MULTIVARIATE FRACTIONAL BROWNIAN MOTIONS</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>Васьковский</surname><given-names>М. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Vaskouski</surname><given-names>Maxim M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Васьковский Максим Михайлович – канд. физ.-мат. наук, доцент</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Vaskouski Maxim Mikhailovich – Ph. D. (Physics and Mathematics), Associate professor</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">vaskovskii@bsu.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>Качан</surname><given-names>И. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kachan</surname><given-names>Ilya V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Качан Илья Вадимович – магистрант, ассистент кафедры</p><p>пр. Независимости, 4, 220030, Минск</p></bio><bio xml:lang="en"><p>Kachan Ilya Vadimovich – Undergraduate, Assistant of the Department</p><p>4, Nezavisimosti Ave., 220030, Minsk</p></bio><email xlink:type="simple">ilyakachan@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный университет</institution></aff><aff xml:lang="en"><institution>Belarusian State University</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2018</year></pub-date><pub-date pub-type="epub"><day>12</day><month>09</month><year>2018</year></pub-date><volume>62</volume><issue>4</issue><fpage>398</fpage><lpage>405</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Васьковский М.М., Качан И.В., 2018</copyright-statement><copyright-year>2018</copyright-year><copyright-holder xml:lang="ru">Васьковский М.М., Качан И.В.</copyright-holder><copyright-holder xml:lang="en">Vaskouski M.M., Kachan I.V.</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/533">https://doklady.belnauka.by/jour/article/view/533</self-uri><abstract><p>Рассматриваются n-мерные стохастические дифференциальные уравнения с дробными броуновскими движениями, имеющими различные индексы Харста, большие 1/3, и сносом. Получены асимптотические разложения математических ожиданий вида Ptg (x) = Eg (Xxt) для достаточно малых t, где через Xxt обозначается решение указанного уравнения с начальным значением x, а g: Rn → R – достаточно гладкая функция.</p></abstract><trans-abstract xml:lang="en"><p>In this article, n-dimensional stochastic differential equations driven by multivariate fractional Brownian motions with the Hurst indices greater than 1/3 and a drift term are considered. We have obtained an expansion of expectations Ptg (x) = Eg (Xxt) for small t, where Xxt denotes the solution of the mentioned equation with an initial value x, and g: Rn → R is a sufficiently smooth function.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>дробное броуновское движение</kwd><kwd>потраекторный интеграл</kwd><kwd>производная Губинелли</kwd><kwd>стохастическое дифференциальное уравнение</kwd><kwd>асимптотическое разложение</kwd></kwd-group><kwd-group xml:lang="en"><kwd>multivariate fractional Brownian motion</kwd><kwd>rough paths theory</kwd><kwd>Gubinelli’s derivative</kwd><kwd>stochastic differential equation</kwd><kwd>asymptotic expansions</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">Baudoin, F. Operators associated with a stochastic differential equation driven by fractional Brownian motions / F. Baudoin, L. 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