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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Contemporary Mathematics. Fundamental Directions</journal-id><journal-title-group><journal-title xml:lang="en">Contemporary Mathematics. Fundamental Directions</journal-title><trans-title-group xml:lang="ru"><trans-title>Современная математика. Фундаментальные направления</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2413-3639</issn><issn publication-format="electronic">2949-0618</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">46624</article-id><article-id pub-id-type="doi">10.22363/2413-3639-2025-71-3-417-442</article-id><article-id pub-id-type="edn">FLFXBT</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Lefschetz formula for nonlocal elliptic problems associated with fibration</article-title><trans-title-group xml:lang="ru"><trans-title>Формула Лефшеца для нелокальных эллиптических задач, ассоциированных с расслоением</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Orlova</surname><given-names>N. R.</given-names></name><name xml:lang="ru"><surname>Орлова</surname><given-names>Н. Р.</given-names></name></name-alternatives><email>izvarinanat@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff id="aff1"><institution></institution></aff><pub-date date-type="pub" iso-8601-date="2025-10-15" publication-format="electronic"><day>15</day><month>10</month><year>2025</year></pub-date><volume>71</volume><issue>3</issue><issue-title xml:lang="en">Proceedings of the Crimean Autumn Mathematical School-Symposium</issue-title><issue-title xml:lang="ru">Труды Крымской осенней математической школы-симпозиума</issue-title><fpage>417</fpage><lpage>442</lpage><history><date date-type="received" iso-8601-date="2025-10-23"><day>23</day><month>10</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Orlova N.R.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Орлова Н.Р.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Orlova N.R.</copyright-holder><copyright-holder xml:lang="ru">Орлова Н.Р.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/CMFD/article/view/46624">https://journals.rudn.ru/CMFD/article/view/46624</self-uri><abstract xml:lang="en">Elliptic operator complexes associated with fibration are considered. The Atiyah-Bott-Lefschetz formula for endomorphisms of such complexes is given. The proof is based on the stationary phase method. Wavefronts of distributions are used to estimate the remainder term.</abstract><trans-abstract xml:lang="ru">Рассматриваются эллиптические комплексы операторов, ассоциированные с расслоением. Даётся формула Атьи-Ботта-Лефшеца для эндоморфизмов таких комплексов. Доказательство основано на методе стационарной фазы. Для оценки остаточного члена используются волновые фронты распределений.</trans-abstract><kwd-group xml:lang="en"><kwd>elliptic complexes</kwd><kwd>nonlocal problems</kwd><kwd>Lefschetz numbers</kwd><kwd>wave front</kwd><kwd>stationary phase method</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>эллиптические комплексы</kwd><kwd>нелокальные задачи</kwd><kwd>числа Лефшеца</kwd><kwd>волновой фронт</kwd><kwd>метод стационарной фазы</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Кордюков Ю. А., Павленко В. А. О формулах Лефшеца для потоков на многообразиях со слоением// Уфимск. мат. ж. - 2015. - 7, №2. - C. 73-108.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Савин А. Ю., Стернин Б. Ю. Индекс нелокальных задач, ассоциированных с расслоением// Дифф. уравн. - 2014. - 50, № 8. - C. 1117-1127.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Стернин Б. Ю. 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