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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">matatecs</journal-id><journal-title-group><journal-title xml:lang="ru">Математика и теоретические компьютерные науки</journal-title><trans-title-group xml:lang="en"><trans-title>Mathematics and Theoretical Computer Science</trans-title></trans-title-group></journal-title-group><issn pub-type="epub">2949-3919</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">matatecs-11</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>СТАТЬИ</subject></subj-group></article-categories><title-group><article-title>Преобразования Фурье быстро убывающих функций в Rn</article-title><trans-title-group xml:lang="en"><trans-title>Fourier transforms of rapidly decreasing functions on Rn</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>Мусин</surname><given-names>И. Х.</given-names></name><name name-style="western" xml:lang="en"><surname>Musin</surname><given-names>I. Kh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>ул.Чернышевского, д. 112, г. Уфа, 450008</p></bio><bio xml:lang="en"><p>112 Chernyshevsky str., Ufa 450008</p></bio><email xlink:type="simple">musin_ildar@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт математики с вычислительным центром,&#13;
Уфимского федерального исследовательского центра&#13;
Российской академии наук</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Institute of Mathematics with Computing Centre, Subdivision of the Ufa Federal Research Centre of the&#13;
Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>31</day><month>10</month><year>2023</year></pub-date><volume>1</volume><issue>2</issue><fpage>12</fpage><lpage>21</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мусин И.Х., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Мусин И.Х.</copyright-holder><copyright-holder xml:lang="en">Musin I.K.</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://matatecs.elpub.ru/jour/article/view/11">https://matatecs.elpub.ru/jour/article/view/11</self-uri><abstract><p>По определенному семейству H раздельно радиальных выпуклых функций в Rn введены два новых пространства быстро убывающих бесконечно дифференцируемых функций в Rn. Одно из них – пространство G(H) – является подпространством введенного И.М. Гельфандом и Г.Е. Шиловым пространства Sα,A, где α = (1, . . . , 1) ∈ Rn,A = (0, . . . , 0) ∈ Rn. Функции второго – пространства E(H) – допускают продолжение до целых функций в Cn. Получено описание пространства таких продолжений. При дополнительных ограничениях на H с помощью преобразования Фурье установлен изоморфизм между пространствами G(H) и E(H).</p></abstract><trans-abstract xml:lang="en"><p>With help of a certain family H of separately radial convex functions in Rn two new spaces of rapidly decreasing infinitely differentiable functions in Rn are introduced in the article. One of them, namely, the space G(H), is a subspace of Gelfand-Shilov type space Sα,A, where α = (1, . . . , 1) ∈ Rn,A = (0, . . . , 0) ∈ Rn. Functions of the second space E(H) admit an extension to entire functions in Cn. A description of the space of such extensions is obtained. Under some mild additional restrictions on H an isomorphism between the spaces G(H) and E(H) is established via the Fourier transform</p></trans-abstract><kwd-group xml:lang="ru"><kwd>быстро убывающие функции</kwd><kwd>преобразование Фурье</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Rapidly decreasing functions</kwd><kwd>Fourier transform</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">И.М. Гельфанд, Г.Е. Шилов, Обобщенные функции. Т. 2. Пространства основных и обобщенных функций, Физматгиз, М., 1958.</mixed-citation><mixed-citation xml:lang="en">I. M. Gel’fand, G. E. Shilov, Generalized Functions, V. 2: Spaces of Fundamental and Generalized Functions, AMS, Providence, R.I., 2016.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Р.Рокафеллар, Выпуклый анализ, Мир, М., 1973.</mixed-citation><mixed-citation xml:lang="en">R.T. Rockafellar, Convex analysis, Princeton University Press, 1970.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">М.А. Соловьев, Пространственно-подобная асимптотика вакуумных средних в нелокальной теории поля, ТМФ 52 (3), 363–374 (1982). URL: https://www.mathnet.ru/rus/tmf2559</mixed-citation><mixed-citation xml:lang="en">M.A. Solov’ev, Spacelike asymptotic behavior of vacuum expectation values in nonlocal field theory, Theoret. and Math. Phys. 52 (3), 854–862 (1982). DOI: https://doi.org/10.1007/BF01038079</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>
