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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">izvuzmath</journal-id><journal-title-group><journal-title xml:lang="ru">Известия высших учебных заведений. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Izvestiya Vysshikh Uchebnykh Zavedenii. Matematika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0021-3446</issn><issn pub-type="epub">2076-4626</issn><publisher><publisher-name>Казанский (Приволжский) федеральный университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26907/0021-3446-2024-4-15-19</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-64</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>Вариационные неравенства и неравенства λ-скачка в Hp -пространствах</article-title><trans-title-group xml:lang="en"><trans-title>Variation and λ-jump inequalities on Hp spaces</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>Демир</surname><given-names>С.</given-names></name><name name-style="western" xml:lang="en"><surname>Demir</surname><given-names>S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>г. Агры, 04100</p></bio><bio xml:lang="en"><p>Agrı, 04100</p></bio><email xlink:type="simple">sakin.demir@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет Агры Ибрагима Чечена</institution><country>Турция</country></aff><aff xml:lang="en"><institution>Agri Ibrahim Cecen University</institution><country>Turkey</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>22</day><month>04</month><year>2024</year></pub-date><volume>0</volume><issue>4</issue><fpage>15</fpage><lpage>19</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Демир С., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Демир С.</copyright-holder><copyright-holder xml:lang="en">Demir S.</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://izvuzmath.elpub.ru/jour/article/view/64">https://izvuzmath.elpub.ru/jour/article/view/64</self-uri><abstract><p>Пусть \phi \in S , \int \phi (x) dx = 1, определим \phi t(x) = 1 tn \phi \Bigl( x t \Bigr) и обозначим семейство функций \{ \phi t \ast f(x)\} t&gt;0 через \Phi \ast f(x). Пусть также \scrJ — подмножество \BbbR (или, более общо, упорядоченное множество индексов) и существует константа C1 такая, что \sum t\in \scrJ \bigm| \bigm| \^\phi t(x) \bigm| \bigm| 2 &lt; C1 для всех x \in \BbbR n. Тогда i) существует константа C2 &gt; 0 такая, что \| V2(\Phi \ast f)\| Lp \leq C2\| f\| Hp, n n + 1 &lt; p \leq 1, для всех f \in Hp(\BbbR n), n n + 1 &lt; p \leq 1; ii) оператор \lambda -скачка N\lambda (\Phi \ast f) удовлетворяет условию \bigm\| \bigm\| \lambda [N\lambda (\Phi \ast f)]1/2\bigm\| \bigm\| Lp \leq C3\| f\| Hp, n n + 1 &lt; p \leq 1, равномерно по \lambda &gt; 0 при некоторой постоянной C3 &gt; 0.</p></abstract><trans-abstract xml:lang="en"><p>Let \phi \in S with \int \phi (x) dx = 1, and define \phi t(x) = 1 tn \phi \Bigl( x t \Bigr) , and denote the function family \{ \phi t\ast f(x)\} t&gt;0 by \Phi \ast f(x). Let \scrJ be a subset of \BbbR (or more generally an ordered index set), and suppose that there exists a constant C1 such that \sum t\in \scrJ | \^\phi t(x)| 2 &lt; C1 for all x \in \BbbR n. Then i) There exists a constant C2 &gt; 0 such that \| V2(\Phi \ast f)\| Lp \leq C2\| f\| Hp, n n + 1 &lt; p \leq 1 for all f \in Hp(\BbbR n), n n + 1 &lt; p \leq 1. ii) The \lambda -jump operator N\lambda (\Phi \ast f) satisfies \| \lambda [N\lambda (\Phi \ast f)]1/2\| Lp \leq C3\| f\| Hp, n n + 1 &lt; p \leq 1, uniformly in \lambda &gt; 0 for some constant C3 &gt; 0.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>пространство Харди</kwd><kwd>вариационный оператор</kwd><kwd>оператор λ-скачка</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Hardy space</kwd><kwd>variation operator</kwd><kwd>λ-jump operator</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">Bourgain J. 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