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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">phmath</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Государственного университета просвещения. Серия: Физика-Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Bulletin of Federal State University of Education. Series: Physics and Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2949-5083</issn><issn pub-type="epub">2949-5067</issn><publisher><publisher-name>Federal State University of Education</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">phmath-218</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>ФУНКЦИИ ДВУХ ПЕРЕМЕННЫХ КОНЕЧНОЙ  -ВАРИАЦИИ И ОПЕРАТОРЫ СУПЕРПОЗИЦИИ</article-title><trans-title-group xml:lang="en"><trans-title>FUNCTIONS OF TWO VARIABLES OF FINITE  -VARIATION
AND SUPERPOSITION OPERATORS</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>Громов</surname><given-names>Е. М.</given-names></name></name-alternatives><email xlink:type="simple">egromov@hse.ru</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>Солычева</surname><given-names>О. М.</given-names></name></name-alternatives><email xlink:type="simple">Solycheva@list.ru</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>Тютин</surname><given-names>В. В.</given-names></name></name-alternatives><email xlink:type="simple">vtyutin@hse.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Национальный исследовательский университет - Высшая школа экономики в Нижнем Новгороде</institution><country>Russian Federation</country></aff><pub-date pub-type="collection"><year>2011</year></pub-date><pub-date pub-type="epub"><day>08</day><month>01</month><year>2023</year></pub-date><volume>0</volume><issue>2</issue><fpage>3</fpage><lpage>6</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Громов Е.М., Солычева О.М., Тютин В.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Громов Е.М., Солычева О.М., Тютин В.В.</copyright-holder><copyright-holder xml:lang="en">Громов Е.М., Солычева О.М., Тютин В.В.</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://www.physmathmgou.ru/jour/article/view/218">https://www.physmathmgou.ru/jour/article/view/218</self-uri><abstract><p>Работа посвящена актуальной тематике описания операторов суперпозиции, действующих на функциональных пространствах конечной вариации. В ней представлены результаты, развивающие и обобщающие недавние исследования Я. Матковского, Я. Мища, Д. Уотермана, В. В. Чистякова: введено понятие полной двумерной ? -вариации функций двух действительных переменных, показано, что класс Уотермана функций двух переменных конечной полной ? -вариации образует банахово пространство. Также приведено описание генератора оператора суперпозиции типа Немыцкого, действующего на пространстве Уотермана и удовлетворяющего условию Липшица.</p></abstract><trans-abstract xml:lang="en"><p>Our paper is devoted to the description of the superposition operators which
map on function spaces of finite variation. We present the results which develop and generalize
the recent researches by J. Matkowski, J. Mis, D. Waterman and V.V. Chistyakov:
we introduce the notion of a total (two-dimensional)  -variation for functions of two
real variables and show that the Waterman class of these functions with finite total variation
is a Banach space. Also, we give the description of the Lipschitzian superposition
(Nemytskii) operator mapping the Wateman class into itself.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>функции двух переменных</kwd><kwd> -вариация Уотермана</kwd><kwd>оператор суперпозиции (Немыцкого)</kwd><kwd>условие Липшица</kwd></kwd-group><kwd-group xml:lang="en"><kwd>functions of two variables</kwd><kwd>Waterman  -variation</kwd><kwd>Nemytskii superposition operator</kwd><kwd>Lipschitz condition</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">Солычева, О.М. Липшицевы операторы суперпозиции на метрических полугруппах и абстрактных выпуклых конусах отображений конечной ? -вариации // Сиб. матем. журн. 2006. Т. 47. №3. С. 649-664.</mixed-citation><mixed-citation xml:lang="en">Солычева, О.М. Липшицевы операторы суперпозиции на метрических полугруппах и абстрактных выпуклых конусах отображений конечной ? -вариации // Сиб. матем. журн. 2006. Т. 47. №3. С. 649-664.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Chistyakov, V.V. Superposition operators in the algebra of functions of two variables with finite total variation // Monatsh. Math. 2002. V. 137. №2. P. 99-114.</mixed-citation><mixed-citation xml:lang="en">Chistyakov, V.V. Superposition operators in the algebra of functions of two variables with finite total variation // Monatsh. Math. 2002. V. 137. №2. P. 99-114.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Chistyakov, V.V., Solycheva O.M. Lipschitzian Operators of Substitution in the Algebra BV // J. of Diff. Equations and Appl. 2003. V. 9. №3/4. P. 407-416.</mixed-citation><mixed-citation xml:lang="en">Chistyakov, V.V., Solycheva O.M. Lipschitzian Operators of Substitution in the Algebra BV // J. of Diff. Equations and Appl. 2003. V. 9. №3/4. P. 407-416.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Dyachenko, M.I., Waterman D. Convergence of double Fourier series and W-classes // Trans. Amer. Math. Soc. 2004. V. 357. №1. P. 397-407.</mixed-citation><mixed-citation xml:lang="en">Dyachenko, M.I., Waterman D. Convergence of double Fourier series and W-classes // Trans. Amer. Math. Soc. 2004. V. 357. №1. P. 397-407.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Hildebrandt, T.H. Introduction to the theory of integration. New York and London: Academic press, 1963. 361 p.</mixed-citation><mixed-citation xml:lang="en">Hildebrandt, T.H. Introduction to the theory of integration. New York and London: Academic press, 1963. 361 p.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Matkowski, J., Miś J. On a characterization of Lipschitzian operators of substitution in the BV[a,b] // Math. Nachr. 1984. V. 117. P. 155-159.</mixed-citation><mixed-citation xml:lang="en">Matkowski, J., Miś J. On a characterization of Lipschitzian operators of substitution in the BV[a,b] // Math. Nachr. 1984. V. 117. P. 155-159.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Waterman, D. On  -bounded variation // Studia Math. 1976. V. 57. №1. P. 33-45.</mixed-citation><mixed-citation xml:lang="en">Waterman, D. On  -bounded variation // Studia Math. 1976. V. 57. №1. P. 33-45.</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>
