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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">cheb</journal-id><journal-title-group><journal-title xml:lang="ru">Чебышевский сборник</journal-title><trans-title-group xml:lang="en"><trans-title>Chebyshevskii Sbornik</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-8383</issn><publisher><publisher-name>Tula State Lev Tolstoy  Pedagogical University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.22405/2226-8383-2025-26-4-212-223</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-2079</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><subj-group subj-group-type="section-heading" xml:lang="en"><subject>Article</subject></subj-group></article-categories><title-group><article-title>Некоторые специальные случаи интерполяционной теоремы для интуиционистского исчисления предикатов</article-title><trans-title-group xml:lang="en"><trans-title>Some special cases of the interpolation theorem for intuitionistic predicate calculus</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>Цибульский</surname><given-names>Дмитрий Алексеевич</given-names></name><name name-style="western" xml:lang="en"><surname>Cybulski</surname><given-names>Dmitry Alekseevich</given-names></name></name-alternatives><bio xml:lang="ru"><p>аспирант</p></bio><bio xml:lang="en"><p>postgraduate student</p></bio><email xlink:type="simple">cybulski@pdmi.ras.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Санкт-Петербургское отделение Математического института имени В. А. Стеклова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>St. Petersburg Department of Steklov Mathematical Institute of the Russian Academy of Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>29</day><month>12</month><year>2025</year></pub-date><volume>26</volume><issue>4</issue><fpage>212</fpage><lpage>223</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цибульский Д.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Цибульский Д.А.</copyright-holder><copyright-holder xml:lang="en">Cybulski D.A.</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://www.chebsbornik.ru/jour/article/view/2079">https://www.chebsbornik.ru/jour/article/view/2079</self-uri><abstract><p>Заметка посвящена доказательству некоторых вариантов интерполяционной теоремы для интуиционистского исчисления предикатов без функциональных символов и равенства с интерполянтом специального вида. Наиболее интересен случай универсального хорновского интерполянта: аксиомы многих алгебраических систем задаются универсальными хорновскими формулами. Результаты, полученные в данной работе, могут быть полезны как с точки зрения теории доказательств, так и в приложениях, например, при решении задач искусственного интеллекта и разработке языков логического программирования. Заметка написана в духе теории доказательств, основным инструментом для решения задачислужат секвенциальные исчисления и такие техники преобразования выводов, как обращение применений правил вывода, перестановка применений правил по С. К. Клини и прополка по В. П. Оревкову.Заметка состоит из введения, разбитой на 3 параграфа основной части и заключения. Введение содержит краткий исторический обзор и обсуждение актуальности работы. Впервом параграфе основной части вводятся необходимые определения и формулируется главный результат. Второй параграф посвящён описанию построенного В. П. Оревковым секвенциального варианта интуиционистского исчисления предикатов IGL. Третий отведён доказательству основной теоремы. Заключение содержит обсуждение полученных результатов и краткий обзор перспектив дальнейшей работы.</p></abstract><trans-abstract xml:lang="en"><p>The article proves some variants of the interpolation theorem for the intuitionistic predicate calculus without functional symbols and equality with a special-form interpolant. The most interesting case is the universal Horn interpolant: the axioms of many algebraic systems are given by universal Horn formulas. The results obtained in this work can be useful both from the point of view of proof theory and in applications, for example, when solving problems of artificial intelligence and developing logical programming languages. The article is written in the spirit of proof theory, the main tools are sequential calculus and such techniques for proof transforming as reversing the applications of inference rules, rearranging the applications of rules according to S. K. Kleene and weeding according to V. P. Orevkov.The article consists of an introduction, the main part divided into 3 paragraphs, and a conclusion. The introduction contains a brief historical overview and discussion of the relevance of the work. In the first paragraph of the main part, the necessary definitions are introduced and the main result is formulated. The second paragraph is devoted to the description of the version of sequent intuitionistic predicate calculus IGL constructed by V. P. Orevkov. The third one is devoted to the proof of the main theorem. The conclusion contains a discussion of the results obtained and a brief overview of the prospects for further work.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>интерполяционная теорема</kwd><kwd>интуиционистское исчисление предикатов</kwd><kwd>универсальный интерполянт</kwd><kwd>хорновский интерполянт.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>interpolation theorem</kwd><kwd>intuitionistic predicate calculus</kwd><kwd>universal interpolant</kwd><kwd>Horn interpolant.</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">Craig W. Linear Reasoning. A New Form of the Herbrand–Gentzen Theorem // Journal of Symbolic Logic. — 1957. — Vol. 22. — P. 250–268.</mixed-citation><mixed-citation xml:lang="en">Craig, W., 1957, “Linear Reasoning. 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