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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2018-22-3-474-478</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-1108</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>Краткие сообщения</subject></subj-group></article-categories><title-group><article-title>Об одном свойстве преобразования Фенхеля</article-title><trans-title-group xml:lang="en"><trans-title>On a property of the Fenchel transform</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>Фарвазова</surname><given-names>Айсылу Азатовна</given-names></name><name name-style="western" xml:lang="en"><surname>Farvazova</surname><given-names>Aisylu Azatovna</given-names></name></name-alternatives><bio xml:lang="ru"><p> аспирант</p></bio><bio xml:lang="en"><p>graduate student</p></bio><email xlink:type="simple">aisylu.farvazova@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>12</day><month>11</month><year>2021</year></pub-date><volume>22</volume><issue>3</issue><fpage>474</fpage><lpage>478</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Фарвазова А.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Фарвазова А.А.</copyright-holder><copyright-holder xml:lang="en">Farvazova A.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://www.chebsbornik.ru/jour/article/view/1108">https://www.chebsbornik.ru/jour/article/view/1108</self-uri><abstract><p>Мы рассматриваем класс функций Φ: R → [0,+∞], которые являются полунепрерывными снизу, четными, выпуклыми и Φ(0) = 0. Преобразование Фенхеля Ψ от Φ тоже принадлежит этому классу функций. Мы определим функции, играющие роль производных для всех функций из нашего класса и докажем, что эти функции взаимно обратные в обобщенном смысле.</p></abstract><trans-abstract xml:lang="en"><p>We consider the class of functions Φ: R → [0,+∞], which are lower semicontinuous, even, convex and Φ(0) = 0. The Fenchel transform Ψ from Φ also belongs to this class of functions. We will define functions that play the role of derivatives for all functions from our class and prove that these functions are mutually inverse in a generalized sense.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>максимизация полезности</kwd><kwd>простраство Орлича</kwd><kwd>преобразование Фен- хеля.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>utility maximization</kwd><kwd>Orlicz space</kwd><kwd>Fenchel 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">Rao M. M., Ren Z. D. Theory of Orlicz Spaces // N.Y: Marcel Dekker. 1991.</mixed-citation><mixed-citation xml:lang="en">Rao, M. M. &amp; Ren, Z. D., 1991, Theory of Orlicz Spaces, Marcel Dekker, New-York.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Embrechts P., Hofert M. A note on generalized inverses // Math. 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