<?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">kaz29</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Казахстанско-Британского технического университета</journal-title><trans-title-group xml:lang="en"><trans-title>Herald of the Kazakh-British Technical University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1998-6688</issn><issn pub-type="epub">2959-8109</issn><publisher><publisher-name>Казахстанско-Британский Технический Университет</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.55452/1998-6688-2026-23-2-75-82</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz29-2888</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>МАТЕМАТИЧЕСКИЕ НАУКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>MATHEMATICAL SCIENCES</subject></subj-group></article-categories><title-group><article-title>ПОЛИНОМЫ ЛИ В СВОБОДНЫХ СПЕЦИАЛЬНЫХ ТОРТКЕН-АЛГЕБРАХ</article-title><trans-title-group xml:lang="en"><trans-title>LIE POLYNOMIALS IN FREE SPECIAL TORTKEN ALGEBRAS</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0007-0952-706X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ерсалиева</surname><given-names>А.</given-names></name><name name-style="western" xml:lang="en"><surname>Yersaliyeva</surname><given-names>A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Магистрант.</p><p>Каскелен</p></bio><bio xml:lang="en"><p>Master's student.</p><p>Kaskelen</p></bio><email xlink:type="simple">airisays@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">SDU University<country>Казахстан</country></aff><aff xml:lang="en">SDU University<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>27</day><month>06</month><year>2026</year></pub-date><volume>23</volume><issue>2</issue><fpage>75</fpage><lpage>82</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ерсалиева А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Ерсалиева А.</copyright-holder><copyright-holder xml:lang="en">Yersaliyeva 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://vestnik.kbtu.edu.kz/jour/article/view/2888">https://vestnik.kbtu.edu.kz/jour/article/view/2888</self-uri><abstract><p>В данной работе изучаются элементы Ли и симметрические элементы (Tortken) в свободной алгебре Новикова, а также исследуется вопрос о том, может ли ненулевой мультилинейный элемент одновременно принадлежать обоим классам. Для проверки принадлежности симметрическому подпространству элементов, представленных в стандартном мультилинейном базисе Ли, используются оператор Эйлера и критерий нулевого лагранжиана. Для части Ли применяются левонормированные коммутаторы с фиксированной первой переменной, образующие удобный базис мультилинейной компоненты. Случай рассматривается явно путем разложения коммутаторов через произведение Новикова и применения оператора Эйлера. Для степеней соответствующие линейные системы строятся и решаются вычислительно в Wolfram Mathematica и Albert. Вычисления показывают, что пересечение мультилинейного подпространства Ли с подпространством симметрических элементов тривиально для всех . Таким образом, до степени 7 в свободной алгебре Новикова не существует ненулевого мультилинейного элемента, который был бы одновременно элементом Ли и симметрическим элементом. Эти результаты служат отправной точкой для дальнейшего изучения данной задачи в более высоких степенях.</p></abstract><trans-abstract xml:lang="en"><p>This paper studies Lie elements and symmetric (Tortken) elements in a free Novikov algebra and examines whether a nonzero multilinear element can belong to both classes simultaneously. We use the Euler operator and the null Lagrangian criterion to test membership in the symmetric subspace for elements represented in the standard multilinear Lie basis. For the Lie component, we employ left-normed commutators with a fixed first variable, which form a convenient basis of the multilinear part. The case is worked out explicitly by expanding the commutators in the Novikov product and applying the Euler operator. For degrees , the corresponding linear systems are obtained and solved computationally in Wolfram Mathematica and Albert. The computations show that the intersection of the multilinear Lie subspace with the subspace of symmetric elements is trivial for all . Thus, up to degree 7 there is no nonzero multilinear element in a free Novikov algebra that is simultaneously Lie and symmetric. These results provide a starting point for studying the problem in higher degrees.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>Лиевы полиномы</kwd><kwd>свободные специальные алгебры Торткена</kwd><kwd>Лиевы элементы</kwd><kwd>свободные алгебры Новикова</kwd><kwd>мультилинейные Лиевы элементы</kwd><kwd>оператор Эйлера</kwd><kwd>симметрические элементы</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Lie polynomials</kwd><kwd>free special Tortken algebras</kwd><kwd>Lie elements</kwd><kwd>free Novikov algebras</kwd><kwd>multilinear Lie elements</kwd><kwd>Euler operator</kwd><kwd>symmetric elements</kwd></kwd-group><funding-group xml:lang="en"><funding-statement>The author expresses her gratitude to her scientific supervisor, professor Nurlan Ismailov, for his guidance, helpful discussions, and support provided during the preparation of this work</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">Albert, A. Version 4.0M6. URL: https://web.osu.cz/~Zusmanovich/soft/albert/ (accessed 2026).</mixed-citation><mixed-citation xml:lang="en">Albert, A. Version 4.0M6. URL: https://web.osu.cz/~Zusmanovich/soft/albert/ (accessed 2026).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Balinskii, A.A., and Novikov, S.P. Poisson brackets of hydrodynamic type, Frobenius algebras and Lie algebras. Soviet Mathematics Doklady, 32, 228–231 (1985). https://web.archive.org/web/https://homepage. mi-ras.ru/~snovikov/95.pdf</mixed-citation><mixed-citation xml:lang="en">Balinskii, A.A., and Novikov, S.P. Poisson brackets of hydrodynamic type, Frobenius algebras and Lie algebras. Soviet Mathematics Doklady, 32, 228–231 (1985). https://web.archive.org/web/https://homepage. mi-ras.ru/~snovikov/95.pdf</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Gel’fand, I.M., and Dorfman, I.Ya. Hamiltonian operators and algebraic structures related to them. Functional Analysis and Its Applications, 13 (4), 248–262 (1979). https://doi.org/10.1007/BF01078363</mixed-citation><mixed-citation xml:lang="en">Gel’fand, I.M., and Dorfman, I.Ya. Hamiltonian operators and algebraic structures related to them. Functional Analysis and Its Applications, 13 (4), 248–262 (1979). https://doi.org/10.1007/BF01078363</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Burde, D. Left-symmetric algebras, or pre-Lie algebras in geometry and physics. Central European Journal of Mathematics, 4 (3), 323–357 (2006). https://doi.org/10.2478/s11533-006-0014-9</mixed-citation><mixed-citation xml:lang="en">Burde, D. Left-symmetric algebras, or pre-Lie algebras in geometry and physics. Central European Journal of Mathematics, 4 (3), 323–357 (2006). https://doi.org/10.2478/s11533-006-0014-9</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumadil’daev, A., and Löfwall, C. Trees, free right-symmetric algebras, free Novikov algebras and identities. Homology, Homotopy and Applications, 4 (2), 165–190 (2002). http://eudml.org/doc/50501</mixed-citation><mixed-citation xml:lang="en">Dzhumadil’daev, A., and Löfwall, C. Trees, free right-symmetric algebras, free Novikov algebras and identities. Homology, Homotopy and Applications, 4 (2), 165–190 (2002). http://eudml.org/doc/50501</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumadil’daev, A.S. Novikov-Jordan algebras. Communications in Algebra, 30 (11), 5205–5240 (2002). https://doi.org/10.1081/AGB-120015649</mixed-citation><mixed-citation xml:lang="en">Dzhumadil’daev, A.S. Novikov-Jordan algebras. Communications in Algebra, 30 (11), 5205–5240 (2002). https://doi.org/10.1081/AGB-120015649</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumadil’daev, A.S. Special identity for Novikov-Jordan algebras. Communications in Algebra, 33 (5), 1279–1287 (2005). https://doi.org/10.1081/AGB-200060504</mixed-citation><mixed-citation xml:lang="en">Dzhumadil’daev, A.S. Special identity for Novikov-Jordan algebras. Communications in Algebra, 33 (5), 1279–1287 (2005). https://doi.org/10.1081/AGB-200060504</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumadil’daev, A.S., and Ismailov, N.A. Polynomial identities of bicommutative algebras, Lie and Jordan elements. Communications in Algebra, 46 (12), 5242–5252 (2018). https://doi.org/10.1080/00927872.2018.1461890</mixed-citation><mixed-citation xml:lang="en">Dzhumadil’daev, A.S., and Ismailov, N.A. Polynomial identities of bicommutative algebras, Lie and Jordan elements. Communications in Algebra, 46 (12), 5242–5252 (2018). https://doi.org/10.1080/00927872.2018.1461890</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumadil’daev, A.S., and Ismailov, N.A. Null Lagrangians in free Novikov algebras. arXiv preprint (2026). https://arxiv.org/abs/2601.11168</mixed-citation><mixed-citation xml:lang="en">Dzhumadil’daev, A.S., and Ismailov, N.A. Null Lagrangians in free Novikov algebras. arXiv preprint (2026). https://arxiv.org/abs/2601.11168</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Jacobson, N. Structure and Representations of Jordan Algebras (Providence, RI: American Mathematical Society, 1968). https://bookstore.ams.org/COLL/39</mixed-citation><mixed-citation xml:lang="en">Jacobson, N. Structure and Representations of Jordan Algebras (Providence, RI: American Mathematical Society, 1968). https://bookstore.ams.org/COLL/39</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Molev, A.I. On the algebraic structure of the Lie algebra of vector fields on the line. Mathematics of the USSR-Sbornik, 62 (1), 83–94 (1989). https://www.mathnet.ru/eng/sm2650</mixed-citation><mixed-citation xml:lang="en">Molev, A.I. On the algebraic structure of the Lie algebra of vector fields on the line. Mathematics of the USSR-Sbornik, 62 (1), 83–94 (1989). https://www.mathnet.ru/eng/sm2650</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Olver, P.J. Applications of Lie Groups to Differential Equations (2nd ed.) (New York: Springer, 1993). https://link.springer.com/book/10.1007/978-1-4612-4350-2</mixed-citation><mixed-citation xml:lang="en">Olver, P.J. Applications of Lie Groups to Differential Equations (2nd ed.) (New York: Springer, 1993). https://link.springer.com/book/10.1007/978-1-4612-4350-2</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Reutenauer, C. Free Lie Algebras (Oxford: Oxford University Press, 1993). https://global.oup.com/academic/product/free-lie-algebras-9780198536796</mixed-citation><mixed-citation xml:lang="en">Reutenauer, C. Free Lie Algebras (Oxford: Oxford University Press, 1993). https://global.oup.com/academic/product/free-lie-algebras-9780198536796</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>
