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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">mathematics</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник российских университетов. Математика</journal-title><trans-title-group xml:lang="en"><trans-title>Russian Universities Reports. Mathematics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2686-9667</issn><issn pub-type="epub">2782-3342</issn><publisher><publisher-name>Тамбовский государственный университет имени Г.Р. Державина</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.20310/2686-9667-2026-31-155-299-320</article-id><article-id custom-type="elpub" pub-id-type="custom">mathematics-395</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>НАУЧНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group></article-categories><title-group><article-title>Ультрафильтры широко понимаемых измеримых пространств: локализация свойств</article-title><trans-title-group xml:lang="en"><trans-title>Ultrafilters of widely understood measurable spaces; localization of properties</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6568-0703</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ченцов</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Chentsov</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ченцов Александр Георгиевич, доктор физико-математических наук, член-корреспондент РАН, главный научный сотрудник</p><p>620108, г. Екатеринбург, ул. Софьи Ковалевской, 16</p><p>620002, г. Екатеринбург, ул. Мира, 19</p></bio><bio xml:lang="en"><p>Aleksandr G. Chentsov, Doctor of Physics and Mathematics, Corresponding Member of the Russian Academy of Sciences, Chief Researcher</p><p>16 S. Kovalevskaya St., Yekaterinburg 620108</p><p>19 Mira St., Yekaterinburg 620002</p></bio><email xlink:type="simple">chentsov@imm.uran.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБУН «Институт математики и механики им. Н. Н. Красовского» Уральского отделения Российской академии наук; ФГАОУ ВО «Уральский федеральный университет им. первого Президента России Б. Н. Ельцина»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>N. N. Krasovskii Institute of Mathematics and Mechanics of the Ural Branch of the Russian Academy of Sciences; Ural Federal University named after the first President of Russia B. N. Yeltsin</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>15</day><month>10</month><year>2026</year></pub-date><volume>31</volume><issue>155</issue><fpage>299</fpage><lpage>320</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ченцов А.Г., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ченцов А.Г.</copyright-holder><copyright-holder xml:lang="en">Chentsov A.G.</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://mathematics.elpub.ru/jour/article/view/395">https://mathematics.elpub.ru/jour/article/view/395</self-uri><abstract><p>Исследуются вопросы структуры максимальных сцепленных систем и ультрафильтров на широко понимаемых измеримых пространствах (ИП) и на их непустых подпространствах. Исследуется роль множеств стоуновского типа в вопросах представления ультрафильтров на упомянутых подпространствах, включая возможность топологического отождествления в случае ИП с алгеброй или полуалгеброй множеств. Рассматриваются вопросы, связанные со свойствами и преобразованиями тривиальных (фиксированных) и свободных ультрафильтров на широко понимаемых ИП.</p></abstract><trans-abstract xml:lang="en"><p>The issues of the structure of maximal linked systems and ultrafilters on widely understood measurable spaces (MS) and on their nonempty subspaces are investigated. The role of Stone-type sets in the representation of ultrafilters on the mentioned subspaces is investigated, including the possibility of topological identification in the case of MS with an algebra or semialgebra of sets. The issues related to the properties and transformations of trivial (fixed) and free ultrafilters on widely understood MS are considered.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>максимальная сцепленная система</kwd><kwd>подпространство</kwd><kwd>ультрафильтр</kwd></kwd-group><kwd-group xml:lang="en"><kwd>maximal linked system</kwd><kwd>subspace</kwd><kwd>ultrafilter</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">Н. Бурбаки, Общая топология. Основные структуры, Наука, М., 1968, 279 с.</mixed-citation><mixed-citation xml:lang="en">[N. Bourbaki, General Topology. Basic Structures, Nauka Publ., Moscow, 1968 (In Russian), 279 pp.]</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">E. Cech ˇ , Topological Spaces, Academia, 1966.</mixed-citation><mixed-citation xml:lang="en">E. Cech ˇ , Topological Spaces, Academia, 1966.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">de Groot J., “Superxtensions and supercompactness”, Extension Theory of Topological Structures and its Applications, Proc. I Internatnl. Symp., VEB Deutscher Verlag Wis., Berlin, 1969, 89–90.</mixed-citation><mixed-citation xml:lang="en">de Groot J., “Superxtensions and supercompactness”, Extension Theory of Topological Structures and its Applications, Proc. I Internatnl. Symp., VEB Deutscher Verlag Wis., Berlin, 1969, 89–90.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">van Mill J., Supercompactness and Wallman Spaces, Math. Center Tract., Amsterdam, 1977.</mixed-citation><mixed-citation xml:lang="en">van Mill J., Supercompactness and Wallman Spaces, Math. Center Tract., Amsterdam, 1977.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">M. Strok, A. Szymanski, “Compact Metric Spaces have Binary Subbases”, Fund. Math., 89:1 (1975), 81–91.</mixed-citation><mixed-citation xml:lang="en">M. Strok, A. Szymanski, “Compact Metric Spaces have Binary Subbases”, Fund. Math., 89:1 (1975), 81–91.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">К. Куратовский, А. Мостовский, Теория множеств, Мир, М., 1970.</mixed-citation><mixed-citation xml:lang="en">[K. Kuratovsky, A. Mostovsky, Set Theory, Mir Publ., Moscow, 1970 (In Russian)].</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Ж. Дьедонне, Основы современного анализа, Мир, М., 1964.</mixed-citation><mixed-citation xml:lang="en">[J. Dieudonne, Foundations of Modern Analysis, Mir Publ., Moscow, 1964 (In Russian)].</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">А. В. Булинский, А. Н. Ширяев, Теория случайных процессов, Физматлит, М., 2005.</mixed-citation><mixed-citation xml:lang="en">[A. V. Bulinsky, A. N. Shiryaev, Theory of Random Processes, Fizmatlit Publ., Moscow, 2005 (In Russian)].</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">П. С. Александров, Введение в теорию множеств и общую топологию, Едиториал, М., 2004, 368 с.</mixed-citation><mixed-citation xml:lang="en">[P. S. Aleksandrov, Introduction to Set Theory and General Topology, Editorial Publ., Moscow, 2004 (In Russian), 368 pp.]</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">А. Г. Ченцов, Ультрафильтры и максимальные сцепленные системы множеств, ЛЕНАНД, М., 2024, 416 с.</mixed-citation><mixed-citation xml:lang="en">[A. G. Chentsov, Ultrafilters and Maximal Linked Set Systems, LENAND Publ., Moscow, 2024 (In Russian), 416 pp.]</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Р. Энгелькинг, Общая топология, Мир, М., 1986.</mixed-citation><mixed-citation xml:lang="en">[R. Engelking, General Topology, Mir Publ., Moscow, 1986 (In Russian)].</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">A. G. Chentsov, S. I. Morina, Extensions and Relaxations, Mathematics and Its Applications, 542, Springer Dordrecht, Boston; London, 2002, 408 pp.</mixed-citation><mixed-citation xml:lang="en">A. G. Chentsov, S. I. Morina, Extensions and Relaxations, Mathematics and Its Applications, 542,</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Дж. Варга, Оптимальное управление дифференциальными и функциональными уравнениями, Наука, М., 1977, 624 с.</mixed-citation><mixed-citation xml:lang="en">Springer Dordrecht, Boston; London, 2002, 408 pp.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Ж. Невё, Математические основы теории вероятностей, Мир, М., 1969.</mixed-citation><mixed-citation xml:lang="en">[J. Varga, Optimal Control of Differential and Functional Equations, Nauka Publ., Moscow, 1977 (In Russian), 624 pp.]</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">[J. Neve, Mathematical Foundations of Probability Theory, Mir Publ., Moscow, 1969 (In Russian)].</mixed-citation><mixed-citation xml:lang="en">[J. Neve, Mathematical Foundations of Probability Theory, Mir Publ., Moscow, 1969 (In Russian)].</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>
