<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<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">10.26907/0021-3446-2025-2-29-38</article-id><article-id custom-type="elpub" pub-id-type="custom">izvuzmath-160</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>Об осколочно компактных ортогонально аддитивных операторах</article-title><trans-title-group xml:lang="en"><trans-title>On C-compact orthogonally additive 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>Джусоева</surname><given-names>Н. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dzhusoeva</surname><given-names>N. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Джусоева Нонна Анатольевна.</p><p>ул. Ватутина, д. 46, Владикавказ, 362025</p></bio><bio xml:lang="en"><p>Nonna A. Dzhusoeva.</p><p>46 Vatutina str., Vladikavkaz, 362025</p></bio><email xlink:type="simple">djusoevanonna@rambler.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>Валгасов</surname><given-names>З. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Valgasov</surname><given-names>Z. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валгасов Заурбек Сосланович.</p><p>ул. Ватутина, д. 46, Владикавказ, 362025</p></bio><bio xml:lang="en"><p>Zaurbek S. Valgasov.</p><p>46 Vatutina str., Vladikavkaz, 362025</p></bio><email xlink:type="simple">zaurbek.valgasov@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Северо-Осетинский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North-Ossetian State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>25</day><month>02</month><year>2025</year></pub-date><volume>0</volume><issue>2</issue><fpage>29</fpage><lpage>38</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Джусоева Н.А., Валгасов З.С., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Джусоева Н.А., Валгасов З.С.</copyright-holder><copyright-holder xml:lang="en">Dzhusoeva N.A., Valgasov Z.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/160">https://izvuzmath.elpub.ru/jour/article/view/160</self-uri><abstract><p>Установлено, что множество всех осколочно компактных ортогонально аддитивных операторов, действующих из векторной решетки E в AM-пространство F является векторной решеткой, причем решеточные операции вычисляются по формулам Рисса-Канторовича. Кроме того, показано, что положительное, порядково компактное ортогонально аддитивное отображение, заданное на латеральном идеале векторной решетки E и принимающее значение в AM-пространстве F, допускает продолжение на все E.</p></abstract><trans-abstract xml:lang="en"><p>It is shown that the set of all C-compact orthogonally additive operators from a vector lattice E to an AM-space F is a vector lattice and the lattice operations can be calculated by the Riesz–Kantorovich formulas. Moreover, a positive AM-compact orthogonally additive map defined on a lateral ideal of a vector lattice E and taking values in an AM-space F can be extended to the whole space E.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>ортогонально аддитивный оператор</kwd><kwd>осколочно компактный оператор</kwd><kwd>порядково компактное ортогонально аддитивное отображение</kwd><kwd>банахова решетка</kwd><kwd>AM-пространство</kwd><kwd>латеральный идеал</kwd></kwd-group><kwd-group xml:lang="en"><kwd>orthogonally additive operator</kwd><kwd>C-compact operator</kwd><kwd>AM-compact orthogonally additive map</kwd><kwd>Banach lattice</kwd><kwd>AM-space</kwd><kwd>lateral ideal</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование выполнено при поддержке Российского научного фонда (номер гранта 24-21-00278). Авторы выражают признательность рецензенту за внимательное чтение статьи и ценные замечания.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Mazón J.M., Segura de León S. Order bounded ortogonally additive operators, Rev. Roumane Math. Pures Appl. 35 (4), 329–353 (1990).</mixed-citation><mixed-citation xml:lang="en">Mazón J.M., Segura de León S. Order bounded ortogonally additive operators, Rev. Roumane Math. Pures Appl. 35 (4), 329–353 (1990).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Красносельский М.А., Забрейко П.П., Пустыльник Е.И., Соболевский П.Е. Интегральные операторы в пространствах суммируемых функций (М., Наука, 1966).</mixed-citation><mixed-citation xml:lang="en">Красносельский М.А., Забрейко П.П., Пустыльник Е.И., Соболевский П.Е. Интегральные операторы в пространствах суммируемых функций (М., Наука, 1966).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Le Dret H. Nonlinear Elliptic Partial Differential Equations (Springer, Berlin–Heidelberg–New York, 2018).</mixed-citation><mixed-citation xml:lang="en">Le Dret H. Nonlinear Elliptic Partial Differential Equations (Springer, Berlin–Heidelberg–New York, 2018).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Абасов Н.М., Джусоева Н.А., Плиев М.А. Диффузные ортогонально аддитивные операторы, Матем. сб. 215 (1), 3–32 (2024).</mixed-citation><mixed-citation xml:lang="en">Абасов Н.М., Джусоева Н.А., Плиев М.А. Диффузные ортогонально аддитивные операторы, Матем. сб. 215 (1), 3–32 (2024).</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Abasov N., Pliev M. Disjointness-preserving orthogonally additive operators in vector lattices, Banach J. Math. Anal. 12 (3), 730–750 (2018).</mixed-citation><mixed-citation xml:lang="en">Abasov N., Pliev M. Disjointness-preserving orthogonally additive operators in vector lattices, Banach J. Math. Anal. 12 (3), 730–750 (2018).</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Abasov N., Pliev M. Dominated orthogonally additive operators in lattice-normed spaces, Adv. Oper. Theory 4 (1), 251–264 (2019).</mixed-citation><mixed-citation xml:lang="en">Abasov N., Pliev M. Dominated orthogonally additive operators in lattice-normed spaces, Adv. Oper. Theory 4 (1), 251–264 (2019).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Feldman W.A. A factorization for orthogonally additive operators on Banach lattices, J. Math. Anal. Appl. 472 (1), 238–245 (2019).</mixed-citation><mixed-citation xml:lang="en">Feldman W.A. A factorization for orthogonally additive operators on Banach lattices, J. Math. Anal. Appl. 472 (1), 238–245 (2019).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Pliev M., Sukochev F. The Kalton and Rosenthal type decomposition of operators in Köthe-Bochner spaces, J. Math. Anal. Appl. 494 (1), 124594 (2021).</mixed-citation><mixed-citation xml:lang="en">Pliev M., Sukochev F. The Kalton and Rosenthal type decomposition of operators in Köthe-Bochner spaces, J. Math. Anal. Appl. 494 (1), 124594 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Popov M. Banach lattices of orthogonally additive operators, J. Math. Anal. Appl. 514 (1), 126279 (2022).</mixed-citation><mixed-citation xml:lang="en">Popov M. Banach lattices of orthogonally additive operators, J. Math. Anal. Appl. 514 (1), 126279 (2022).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Turan B., Tulu D. On orthogonally additive band operators and orthogonally additive disjointness preserving operators, Turkish J. Math. 47 (4), article 15 (2023).</mixed-citation><mixed-citation xml:lang="en">Turan B., Tulu D. On orthogonally additive band operators and orthogonally additive disjointness preserving operators, Turkish J. Math. 47 (4), article 15 (2023).</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Джусоева Н.А., Итарова С.Ю. Об ортогонально аддитивных операторах в РНП, Матем. заметки 113 (1), 58–74 (2023).</mixed-citation><mixed-citation xml:lang="en">Джусоева Н.А., Итарова С.Ю. Об ортогонально аддитивных операторах в РНП, Матем. заметки 113 (1), 58–74 (2023).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Abasov N. Completely additive and C-compact operators in lattice-normed spaces, Ann. Funct. Anal. 11 (4), 914–928 (2020).</mixed-citation><mixed-citation xml:lang="en">Abasov N. Completely additive and C-compact operators in lattice-normed spaces, Ann. Funct. Anal. 11 (4), 914–928 (2020).</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Mazón J.M., Segura de León S. Uryson operators, Rev. Roumane Math. Pures Appl. 35 (5), 431–449 (1990).</mixed-citation><mixed-citation xml:lang="en">Mazón J.M., Segura de León S. Uryson operators, Rev. Roumane Math. Pures Appl. 35 (5), 431–449 (1990).</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Orlov V., Pliev M., Rode D. Domination problem for AM-compact abstract Uryson operators, Arch. Math. 107 (5), 543–552 (2016).</mixed-citation><mixed-citation xml:lang="en">Orlov V., Pliev M., Rode D. Domination problem for AM-compact abstract Uryson operators, Arch. Math. 107 (5), 543–552 (2016).</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Pliev M. On C-compact orthogonally additive operators, J. Math. Anal. Appl. 494 (1), 124594 (2021).</mixed-citation><mixed-citation xml:lang="en">Pliev M. On C-compact orthogonally additive operators, J. Math. Anal. Appl. 494 (1), 124594 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Pliev M.A., Polat F., Weber M.R. Narrow and C-compact orthogonally additive operators in lattice-normed spaces, Results Math. 74 (4), article 157 (2019).</mixed-citation><mixed-citation xml:lang="en">Pliev M.A., Polat F., Weber M.R. Narrow and C-compact orthogonally additive operators in lattice-normed spaces, Results Math. 74 (4), article 157 (2019).</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Плиев М.А., Попов М.М. О продолжении абстрактных операторов Урысона, Сиб. матем. журн. 57 (3), 700–708 (2016).</mixed-citation><mixed-citation xml:lang="en">Плиев М.А., Попов М.М. О продолжении абстрактных операторов Урысона, Сиб. матем. журн. 57 (3), 700–708 (2016).</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Abramovich Y.A., Aliprantis C.D. An Invitation to Operator Theory (AMS, 2002).</mixed-citation><mixed-citation xml:lang="en">Abramovich Y.A., Aliprantis C.D. An Invitation to Operator Theory (AMS, 2002).</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Aliprantis C.D., Burkinshaw O. Positive Operators (Springer, Dordrecht, 2006).</mixed-citation><mixed-citation xml:lang="en">Aliprantis C.D., Burkinshaw O. Positive Operators (Springer, Dordrecht, 2006).</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Mykhaylyuk V., Pliev M., Popov M. The lateral order on Riesz spaces and orthogonally additive operators, Positivity 25 (2), 291–327 (2021).</mixed-citation><mixed-citation xml:lang="en">Mykhaylyuk V., Pliev M., Popov M. The lateral order on Riesz spaces and orthogonally additive operators, Positivity 25 (2), 291–327 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Pliev M., Ramdane K. Order Unbounded Orthogonally Additive Operators in Vector Lattices, Mediter. J. Math. 15 (2), article 55 (2018).</mixed-citation><mixed-citation xml:lang="en">Pliev M., Ramdane K. Order Unbounded Orthogonally Additive Operators in Vector Lattices, Mediter. J. Math. 15 (2), article 55 (2018).</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Erkursun-Özcan N., Pliev M. On orthogonally additive operators in C-complete vector lattices, Banach J. Math. Anal. 16 (1), article 6 (2022).</mixed-citation><mixed-citation xml:lang="en">Erkursun-Özcan N., Pliev M. On orthogonally additive operators in C-complete vector lattices, Banach J. Math. Anal. 16 (1), article 6 (2022).</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Appell J., Zabrejko P.P. Nonlinear superposition operators (Cambridge Univ. Press, Cambridge, 1990).</mixed-citation><mixed-citation xml:lang="en">Appell J., Zabrejko P.P. Nonlinear superposition operators (Cambridge Univ. Press, Cambridge, 1990).</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Ben Amor M.A., Pliev M. Laterally continuous part of an abstract Uryson operator, Int. J. Math. Anal. 7 (58), 2853–2860 (2013).</mixed-citation><mixed-citation xml:lang="en">Ben Amor M.A., Pliev M. Laterally continuous part of an abstract Uryson operator, Int. J. Math. Anal. 7 (58), 2853–2860 (2013).</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>
