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  <front>
    <journal-meta>
      <issn publication-format="print">1683-3414</issn>
      <issn publication-format="electronic">1814-0807</issn>
      <journal-title-group>
        <journal-title>Владикавказский математический журнал</journal-title>
        <trans-title-group xml:lang="en">
          <trans-title>Vladikavkaz Mathematical Journal</trans-title>
        </trans-title-group>
      </journal-title-group>
      <publisher>
        <publisher-name>Южный математический институт - филиал Федерального государственного бюджетного учреждения науки Федерального научного центра «Владикавказский научный центр Российской академии наук» (ЮМИ ВНЦ РАН)</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <title-group>
        <article-title>Lattice Sequence Spaces and Summing Mappings</article-title>
      </title-group>
      <trans-title-group xml:lang="ru">
        <trans-title>Банаховы решетки последовательностей и суммирующие отображения</trans-title>
      </trans-title-group>
      <article-id pub-id-type="doi">10.46698/r7902-6696-2150-a</article-id>
      <article-id pub-id-type="publisher-id">17975</article-id>
      <pub-date publication-format="electronic" date-type="pub">
        <month>12</month>
        <year>2025</year>
      </pub-date>
      <volume>27</volume>
      <issue>4</issue>
      <fpage>21</fpage>
      <lpage>37</lpage>
      <self-uri xlink:href="https://vmj.ru/eng/archive/detail.php?ELEMENT_ID=18013&amp;SECTION_ID=647">https://vmj.ru/eng/archive/detail.php?ELEMENT_ID=18013&amp;SECTION_ID=647</self-uri>
      <contrib-group>
        <contrib contrib-type="author">
          <name-alternatives>
            <name xml:lang="ru">
              <surname>Дахман</surname>
              <given-names>А.</given-names>
            </name>
            <name xml:lang="en">
              <surname>Dahmane</surname>
              <given-names>A.</given-names>
            </name>
          </name-alternatives>
          <email>dahmane.achour@univ-msila.dz</email>
          <xref ref-type="aff" rid="aff1"/>
        </contrib>
        <contrib contrib-type="author">
          <name-alternatives>
            <name xml:lang="ru">
              <surname>Туфик</surname>
              <given-names>Т.</given-names>
            </name>
            <name xml:lang="en">
              <surname>Toufik</surname>
              <given-names>T.</given-names>
            </name>
          </name-alternatives>
          <email>t.tiaiba@essaia.dz</email>
          <xref ref-type="aff" rid="aff2"/>
        </contrib>
      </contrib-group>
      <aff-alternatives id="aff1">
        <aff xml:lang="ru">Университет Мохамеда Будиафа М'Сила, \\  Лаборатория функционального анализа и геометрии пространств, М'Сила 28000, Алжир</aff>
        <aff xml:lang="en">Laboratory of Functional Analysis and Geometry of Spaces,  Faculty of Mathematics and Computer Science, University of M’Sila, M'Sila 28000, Algeria</aff>
      </aff-alternatives>
      <aff-alternatives id="aff2">
        <aff xml:lang="ru">Университет Мохамеда Будиафа М'Сила,\\ Высший колледж пищевых наук и пищевой промышленности, М'Сила, Алжир</aff>
        <aff xml:lang="en">Laboratory of Functional Analysis and Geometry of Spaces,  University of M'Sila, High College of Food Sciences and Food Industries, Algiers 16200, Algeria</aff>
      </aff-alternatives>
      <abstract>This paper contributes to the theory of positive summing operators between Banach lattices by exploring the interplay between specialized sequence spaces, operator ideals, and tensor product techniques. We focus on the spaces of positive strongly \(p\)-summable sequences \(\ell_p^{\pi}(X)\) and positive unconditionally \(p\)-summable sequences \(\ell_{p,|\omega|}^u(X)\), utilizing them alongside the Banach lattice of positive weakly \(p\)-summable sequences \(\ell_{p,|\omega|}(X)\) . These tools are employed to present and characterize three central classes: positive strongly \((p,q)\)-summing operators, positive \((p,q)\)-summing operators, and positive Cohen \((p,q)\)-nuclear operators. Our investigation yields new properties, including the characterization of positive \((p,q)\)-summing operators as those which map positive unconditionally \(p\)-summable sequences into \(q\)-summable sequences, and the identification of the positive strongly \((p,q)\)-summing class with the class of \((p,q)\)-majorizing operators. A central achievement of this work is the unified characterization of these operator classes via tensor product continuity, a method well-established for linear operator ideals that we now extend to the context of Banach lattices. We characterize each class by the continuity of an associated tensor operator \(I \otimes T : \ell_p \otimes_\alpha X \to \ell_q \otimes_\beta Y\) for appropriate tensor norms \(\alpha\) and \(\beta\). This approach provides a powerful and cohesive framework that deepens the connections between summability, the order structure of Banach lattices, and tensor norms.</abstract>
      <trans-abstract xml:lang="ru">Данная работа относится к теории положительных суммирующих операторов между банаховыми решетками, исследуя взаимодействие между специализированными пространствами последовательностей, операторными идеалами и методами тензорного произведения. Мы фокусируемся на пространствах положительных сильно \(p\)-суммируемых последовательностей \(\ell_p^{\pi}(X)\) и положительных безусловно \(p\)-суммируемых последовательностей \(\ell_{p,|\omega|}^u(X)\), используя их наряду с банаховой решеткой положительных слабо \(p\)-суммируемых последовательностей \(\ell_{p,|\omega|}(X)\). Эти инструменты применяются для представления и характеристики трех основных классов: положительных сильно \((p,q)\)-суммирующих операторов, положительных \((p,q)\)-суммирующих операторов и положительных \((p,q)\)-ядерных операторов Коэна. Наше исследование позволяет получить новые свойства, включая характеристику положительных \((p,q)\)-суммирующих операторов как тех, которые отображают положительные безусловно \(p\)-суммируемые последовательности в \(q\)-суммируемые последовательности, а также идентификацию положительного класса сильно \((p,q)\)-суммирующих операторов с классом \((p,q)\)-мажоризирующих операторов. Центральным достижением этой работы является унифицированная характеристика этих классов операторов посредством непрерывности тензорного произведения --- метода, хорошо зарекомендовавшего себя для линейных операторных идеалов, который мы теперь распространяем на контекст банаховых решеток. Мы характеризуем каждый класс непрерывностью ассоциированного тензорного оператора \(I \otimes T : \ell_p \otimes_\alpha X \to \ell_q \otimes_\beta Y\) для соответствующих тензорных норм \(\alpha\) и \(\beta\). Этот подход  углубляет связи между суммируемостью, структурой порядка банаховых решеток и тензорными нормами.</trans-abstract>
      <kwd-group xml:lang="ru">
        <kwd>решеточные пространства последовательностей</kwd>
        <kwd>положительные \((p;q)\)-суммирующие операторы</kwd>
        <kwd>положительные сильно \((p;q)\)-суммирующие операторы</kwd>
      </kwd-group>
      <kwd-group xml:lang="en">
        <kwd>lattice sequence spaces</kwd>
        <kwd>positive \((p;q)\)-summing operators</kwd>
        <kwd>positive strongly \((p;q)\)-summing operators</kwd>
      </kwd-group>
    </article-meta>
  </front>
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