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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">10.22405/2226-8383-2025-26-3-125-135</article-id><article-id custom-type="elpub" pub-id-type="custom">cheb-2010</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>Об унарах с тождествами в решётке конгруэнций, II</article-title><trans-title-group xml:lang="en"><trans-title>On unars with identities in congruence lattice, II</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>Кожухов</surname><given-names>Игорь Борисович</given-names></name><name name-style="western" xml:lang="en"><surname>Kozhukhov</surname><given-names>Igor Borisovich</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор физико-математических наук</p></bio><bio xml:lang="en"><p>doctor of physical and mathematical sciences</p></bio><email xlink:type="simple">kozhuhov_i_b@mail.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>Пряничников</surname><given-names>Алексей Михайлович</given-names></name><name name-style="western" xml:lang="en"><surname>Pryanichnikov</surname><given-names>Alexey Mikhailovich</given-names></name></name-alternatives><email xlink:type="simple">genary@ya.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Национальный исследовательский университет МИЭТ; Московский государственный университет им. М. В. Ломоносова; Российская академия народного хозяйства и государственной службы при Президенте Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>National Research University MIET; Lomonosov Moscow State University; The Russian Presidential Academy of National Economy and Public Administration</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Московский государственный университет им. М. В. Ломоносова, ООО «Квантом»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Lomonosov Moscow State University, «Kvantom» LLC</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>01</day><month>11</month><year>2025</year></pub-date><volume>26</volume><issue>3</issue><fpage>125</fpage><lpage>135</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Кожухов И.Б., Пряничников А.М., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Кожухов И.Б., Пряничников А.М.</copyright-holder><copyright-holder xml:lang="en">Kozhukhov I.B., Pryanichnikov A.M.</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/2010">https://www.chebsbornik.ru/jour/article/view/2010</self-uri><abstract><p>Доказано, что если решётка конгруэнций унара удовлетворяет нетривиальному решёточному тождеству, то унар является гомоморфным образом копроизведения конечного числа прямых и лучей, а это, в свою очередь, равносильно тому, что унар имеет лишьконечное число компонент связности, узлов, начальных элементов, и входная степень каждого элемента унара конечна.</p></abstract><trans-abstract xml:lang="en"><p>We prove that if a congruence lattice of a unar satisfies a non-trivial lattice identity, then the unar is a homomorphic image of a coproduct of finite number of lines and rays, which, in turn, is equivalent to the fact that the unar has only a finite number of connected components, knots, initial elements, and input degree of each element of the unar is finite.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полигон над полугруппой</kwd><kwd>унар</kwd><kwd>решётка конгруэнций</kwd><kwd>тождество.</kwd></kwd-group><kwd-group xml:lang="en"><kwd>act over semigroup</kwd><kwd>unar</kwd><kwd>congruence lattice</kwd><kwd>identity.</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">Степанова А. А., Птахов Д. О., Решётки конгруэнций полигонов // Дальневост. матем. журн. 2013. Т. 13, №1. С. 107–115.</mixed-citation><mixed-citation xml:lang="en">Stepanova, A. A., Ptahov, D. O. 2013, “Congruence lattice of S-acts“, Far Eastern Mathematical Journal, vol. 13, no. 1, pp. 107–115.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Кожухов И. Б., Пряничников А. М., Симакова А. Р. Условия модулярности решётки конгруэнций полигона над прямоугольной связкой // Изв. РАН. Сер. матем. 2020. Т. 84. Вып. 2. С. 90–125.</mixed-citation><mixed-citation xml:lang="en">Kozhukhov, I. B., Pryanichnikov, A. M., Simakova, A. R. “Conditions of modularity of the congruence lattice of an act over a rectangular band“, Izv. Math., 2020, vol. 84, iss. 2, pp. 291–323.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Егорова Д. П. Структура конгруэнций унарной алгебры // Межвузовский научный сборник ≪Упорядоченные множества и решётки≫. г. Саратов: Издательство Саратовского университа. 1978. Вып. 5. С. 11–44.</mixed-citation><mixed-citation xml:lang="en">Egorova, D.P. 1978, “The structure of congruences of unary algebra“, Interuniversity scientific collection "Ordered sets and lattices", Saratov: Saratov University Press, issue 5, pp. 11–44. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Kearnes K. A., Kiss E. W. The shape of congruence lattices // Memoirs of the American Mathematical Society. 2013. Vol. 222. 169 P.</mixed-citation><mixed-citation xml:lang="en">Kearnes, K. A., Kiss, E. W. 2013, “The shape of congruence lattices“, Memoirs of the American Mathematical Society, vol. 222, 169 pp.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Nation J. B. Varieties of algebras whose congruence lattices satisfy lattice identities (Thesis) // Pasadena: California Institute of Technology. 1973. 63 P.</mixed-citation><mixed-citation xml:lang="en">Nation, J. B. 1973, “Varieties of algebras whose congruence lattices satisfy lattice identities“, PhD thesis, California Institute of Technology, 63 pp.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Kozhuhov, I. B., Pryanichnikov, A. M. Acts with identities in the congruence lattice. // Algebra Universalis. 2022. V. 83, iss. 16, Article 6, 18 pp.</mixed-citation><mixed-citation xml:lang="en">Kozhuhov, I. B., Pryanichnikov, A. M. 2022, “Acts with identities in the congruence lattice“, Algebra Universalis, vol. 83, iss. 16, article 6, 18 pp.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Репницкий В. Б., Кацман С. И. Коммутативные полугруппы, решётка подполугрупп которых удовлетворяет нетривиальному тождеству // Математический сборник. 1988. Т. 137(179), № 4(12). С. 462–482.</mixed-citation><mixed-citation xml:lang="en">Repnitsky, V. B., Katsman, S. I. 1990, “Commutative semigroups with lattice of subsemigroups satisfies a nontrivial identity“, Mathematics of the USSR-Sbornik, vol. 65, no. 2, pp. 465–485.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Кожухов И. Б., Пряничников А. М. Об унарах с тождествами в решётке конгруэнций // Материалы VI международной научно-технической конференции СИТОНИ-2019. Донецк, 2019. С. 64–69.</mixed-citation><mixed-citation xml:lang="en">Kozhukhov, I. B., Pryanichnikov, A. M. 2019, “On unars with identities in congruence lattice“’, Proceedings of the VI International Scientific and Technical Conference SITONI-2019, Donetsk, pp. 64–69. (in Russian)</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Кон П. М. Универсальная алгебра // М.: Мир, 1968. 359 С.</mixed-citation><mixed-citation xml:lang="en">Kohn, P. M. 1981, “Universal algebra“, Springer Dordrecht, 412 pp.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Гретцер Г. Общая теория решёток // М.: Мир, 1982. 454 С.</mixed-citation><mixed-citation xml:lang="en">Gr¨atzer, G. 2011, Lattice Theory: Foundation, Birkh¨auser Basel, 614 pp.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Клиффорд А., Престон Г. Алгебраическая теория полугрупп // М.: Мир, 1972. Т. 1. 286 с.; Т. 2. 423 С.</mixed-citation><mixed-citation xml:lang="en">Clifford, A. H., Preston, G. B. 1961–1967, “The algebraic theory of semigroups“, American Mathematical Society. Mathematical Surveys, Providence, Rhode Island, no. 7, vol. I-II, 244 pp. and 350 pp.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Kilp M., Knauer U., Mikhalev A. V. Monoids, acts and categories // Berlin - N.Y., de Gruyter, 2000. 529 P.</mixed-citation><mixed-citation xml:lang="en">Kilp, M., Knauer, U. &amp; Mikhalev, A. V. 2000, “Monoids, acts and categories“, Berlin; New York: de Gruyter, 546 pp.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Jakubikov´a-Studenovsk´a D., P´ocs J. Monounary algebras // Koˇsice: UPJS, 2009. 301 P.</mixed-citation><mixed-citation xml:lang="en">Jakubikov´a-Studenovsk´a, D., P´ocs, J. 2009, “Monounary algebras“, UPJS, Koˇsice, 301 pp.</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Jipsen P., Rose H. Variety of lattices // Lecture Notes in Mathematics, 1992. Vol. 1533. 166 P.</mixed-citation><mixed-citation xml:lang="en">Jipsen, P., Rose, H. 1992, Variety of lattices, Lecture Notes in Mathematics, Springer Berlin, vol. 1533, 166 pp.</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Sachs D. Identities in finite partition lattices // Proc. Amer. Math. Soc., 1961. Vol. 12. Iss. 6, PP. 944–945.</mixed-citation><mixed-citation xml:lang="en">Sachs D. 1961, Identities in finite partition lattices, Proc. Amer. Math. Soc., vol. 12. iss. 6, pp. 944–945.</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>
