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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">vestifm</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия физико-математических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-2430</issn><issn pub-type="epub">2524-2415</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-2430-2019-55-2-216-224</article-id><article-id custom-type="elpub" pub-id-type="custom">vestifm-389</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>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Двойственность Хоу алгебры Хиггса – Хана для восьмимерного гармонического осциллятора</article-title><trans-title-group xml:lang="en"><trans-title>Howe duality of Higgs – Hahn algebra for 8D harmonic oscillator</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7384-3621</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лаврёнов</surname><given-names>А. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Lavrenov</surname><given-names>А. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лаврёнов Александр Николаевич – кандидат физико-математических наук, доцент, доцент кафедры информационных технологий в образовании</p><p>ул. Советская, 18, 220030, г. Минск, Республика Беларусь</p></bio><bio xml:lang="en"><p>Alexandre N. Lavrenov – Ph. D. (Physics and Mathematics), Assistant Professor, Assistant Professorof the department of the Chair of Information Technologies in Education</p><p>18, Sovetskaya Str., 220050, Minsk, Republic of Belarus</p></bio><email xlink:type="simple">lanin0777@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-3650-8987</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лаврёнов</surname><given-names>И. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lavrenov</surname><given-names>I. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лаврёнов Иван Александрович – ведущий специалист</p><p>ул. Я. Купалы, 25, 220030, г. Минск, Республика Беларусь</p></bio><bio xml:lang="en"><p>Ivan A. Lavrenov – Leading Specialist</p><p>25, Ya. Kupala Str., 220030, Minsk, Republic of Belarus</p></bio><email xlink:type="simple">lanin99@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Белорусский государственный педагогический университет им. М. Танка</institution></aff><aff xml:lang="en"><institution>Belarusian State Pedagogical University Named After Maxim Tank</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ООО «Октонион технолоджи»</institution></aff><aff xml:lang="en"><institution>Octonion Technology Ltd.</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2019</year></pub-date><pub-date pub-type="epub"><day>28</day><month>06</month><year>2019</year></pub-date><volume>55</volume><issue>2</issue><fpage>216</fpage><lpage>224</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Лаврёнов А.Н., Лаврёнов И.А., 2019</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="ru">Лаврёнов А.Н., Лаврёнов И.А.</copyright-holder><copyright-holder xml:lang="en">Lavrenov А.N., Lavrenov I.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://vestifm.belnauka.by/jour/article/view/389">https://vestifm.belnauka.by/jour/article/view/389</self-uri><abstract><p>Рассмотрены два разных, но изоморфных представления одной алгебры в свете двойственности Хоу: алгебра Хиггса и алгебра Хана. Первая отвечает алгебре симметрии гармонического осциллятора на 2-сфере и полиномиально деформированной SU(2) алгебре, а вторая – кодирует биспектральные свойства одноименных ортогональных многочленов и выступает как алгебра симметрии Хартмана и некоторых других кольцевых потенциалов, а также сингулярного осциллятора в двух измерениях. Показана в явном виде реализация данной алгебры, с одной стороны, как коммутанта O(4) ⊕ O(4) подалгебры U(8) в осцилляторном представлении универсальной обертывающей алгебры U (u(8)) и, с другой стороны, как вложение дискретной версии алгебры Хана в двойное тензорное произведение SU(1,1) ⊗ SU(1,1). Эти две реализации отражают факт, что SU(1,1) и U(8) образуют двойственную пару в пространстве состояний гармонического осциллятора в восьми измерениях. В конце статьи кратко обсуждены дальнейшие возможные направления исследований для обобщения полученных результатов. Первое достаточно очевидно – это рассмотрение проблемы при увеличении или при любом значении N размерности гармонического осциллятора. Второе направление можно связать с анализом ситуации для N-тензорного произведения SU(1,1)⊗N. Еще одним интересным аспектом данной проблемы может быть исследование q-обобщения SU(1,1).</p></abstract><trans-abstract xml:lang="en"><p>In the light of the Howe duality, two different, but isomorphic representations of one algebra as Higgs algebra and Hahn algebra are considered in this article. The first algebra corresponds to the symmetry algebra of a harmonic oscillator on a 2-sphere and a polynomially deformed algebra SU(2), and the second algebra encodes the bispectral properties of corresponding homogeneous orthogonal polynomials and acts as a symmetry algebra for the Hartmann and certain ring-shaped potentials as well as the singular oscillator in two dimensions. The realization of this algebra is shown in explicit form, on the one hand, as the commutant O(4) ⊕ O(4) of subalgebra U(8) in the oscillator representation of universal algebra U (u(8)) and, on the other hand, as the embedding of the discrete version of the Hahn algebra in the double tensor product SU(1,1) ⊗ SU(1,1). These two realizations reflect the fact that SU(1,1) and U(8) form a dual pair in the state space of the harmonic oscillator in eight dimensions. The N-dimensional, N-fold tensor product SU(1,1)⊗N аnd q-generalizations are briefly discussed.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>алгебра Хиггса</kwd><kwd>алгебра Хана</kwd><kwd>коммутант</kwd><kwd>8D гармонический осциллятор</kwd><kwd>двойственность Хоу</kwd><kwd>тензорное произведение</kwd><kwd>SU(1</kwd><kwd>1)</kwd><kwd>U(8)</kwd></kwd-group><kwd-group xml:lang="en"><kwd>Higgs algebra</kwd><kwd>Hahn algebra</kwd><kwd>commutant</kwd><kwd>8D harmonic oscillator</kwd><kwd>Howe duality</kwd><kwd>tensor product</kwd><kwd>SU(1</kwd><kwd>1)</kwd><kwd>U(8)</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">Грановский, Я. И. Точно решаемые задачи и их квадратичные алгебры / Я. И. Грановский, А. С. Жеданов. – Донецк: ДонФТИ, 1989. – 40 с. – (Препринт / Донец. физ.-тех. ин-т; ДонФТИ-89-7).</mixed-citation><mixed-citation xml:lang="en">Granovskii Ya. I., Zhedanov, A. S. Exactly Solvable Problems and their Quadratic Algebras. Donetsk, DonFTI, 1989. 40 р. (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Жеданов, А. С. Скрытая симметрия полиномов Аски – Вильсона / А. С. Жеданов // теорет. и мат. физика. – 1991. – т. 89, № 2. – С. 190–204.</mixed-citation><mixed-citation xml:lang="en">Zhedanov A. S. Hidden symmetry of the Askey – Wilson polynomials. Theoretical and Mathematical Physics, 1991, vol. 89, no. 2, pp. 1146–1157. https://doi.org/10.1007/bf01015906</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Грановский, Я. И. Квадратичная алгебра и динамическая симметрия уравнения Шредингера / Я. И. Грановский, А. С. Жеданов, И. M. Луценко // ЖЭТФ. – 1991. – т. 99, № 2. – С. 353–361.</mixed-citation><mixed-citation xml:lang="en">Granovskii Ya. I., Zhedanov A. S., Lutsenko I. M. Quadratic algebras and dynamical symmetry of the Schrödinger equation. Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki = Journal of Experimental and Theoretical Physics, 1991, vol. 99, no. 2, pp. 353–361 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Granovskii, Y. I. Mutual integrability, quadratic algebras, and dynamical symmetry / Y. I. Granovskii, I. M. Lutsenko, A. S. Zhedanov // Ann. Phys. – 1992. – Vol. 217, № 1. – P. 1–20. https://doi.org/10.1016/0003-4916(92)90336-k</mixed-citation><mixed-citation xml:lang="en">Granovskii Y. I., Lutsenko I. M., Zhedanov A. S. Mutual integrability, quadratic algebras, and dynamical symmetry. Annals of Physics, 1992, vol. 217, no. 1, pp. 1–20. https://doi.org/10.1016/0003-4916(92)90336-k</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Луценко, И. M. Об алгебре Якоби и порождаемых ею потенциалах / И. M. Луценко // теорет. и мат. физика. – 1992. – т. 93, № 1. – С. 3–16.</mixed-citation><mixed-citation xml:lang="en">Lutsenko I. M. Jacobi algebra and potentials generated by it. Theoretical and Mathematical Physics, 1992, vol. 93, no. 1, pp. 1081–1090. https://doi.org/10.1007/bf01016465</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Higgs, P. W. Dynamical symmetries in a spherical geometry. I / P. W. Higgs // J. Phys. A: Math. General. – 1979. – Vol. 12, № 3. – P. 309–323. ttps://doi.org/10.1088/0305-4470/12/3/006</mixed-citation><mixed-citation xml:lang="en">Higgs P. W. Dynamical symmetries in a spherical geometry. I. Journal of Physics A: Mathematical and General, 1979, vol. 12, no. 3, pp. 309–323. ttps://doi.org/10.1088/0305-4470/12/3/006</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Leemon, H. I. Dynamical symmetries in a spherical geometry. II / H. I. Leemon // J. Phys. A: Math. General. – 1979. – Vol. 12, № 4. – P. 489–501. https://doi.org/10.1088/0305-4470/12/4/009</mixed-citation><mixed-citation xml:lang="en">Leemon H. I. Dynamical symmetries in a spherical geometry. II. Journal of Physics A: Mathematical and General, 1979, vol. 12, no. 4, pp. 489–501. https://doi.org/10.1088/0305-4470/12/4/009</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Курочкин, Ю. А. Аналог вектора Рунге – ленца и спектр энергий в задаче Кеплера на трехмерной сфере / Ю. А. Курочкин, В. С. Отчик // Докл. акад. наук БССР. – 1979. – T. 23, № 11. – С. 987–990.</mixed-citation><mixed-citation xml:lang="en">Kurochkin, Yu. A., Analogue of the Runge – Lenz vector and the energy spectrum in the Kepler problem on a threedimensional sphere. Doklady akademii nauk BSSR[Doklady of the Academy of Sciences of BSSR], 1979, vol. 23, no. 11, pp. 987–990 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Богуш, А. А. О квантовомеханической задаче Кеплера в пространстве лобачевского / А. А. Богуш, Ю. А. Курочкин, В. С. Отчик // Докл. акад. наук БССР. – 1980.– т. 24, № 1. – С. 19–22.</mixed-citation><mixed-citation xml:lang="en">Bogush A. A., Kurochkin Yu. A., Otchik V. S. On the Kepler quantum-mechanical problem in Lobachevsky space] Doklady akademii nauk BSSR[Doklady of the Academy of Sciences of BSSR], 1980, vol. 24, no. 1, pp 19–22 (in Russian).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Bogush, A. A. Algebra of conserved operators for the Kepler – Coulomb problem in the spaces of constant curvature / A. A. Bogush, Yu. A. Kurochkin, V. S. Otchik // Physics of Atomic Nuclei. – 1998. – Vol. 61, № 10. – P. 1778–1781.</mixed-citation><mixed-citation xml:lang="en">Bogush A. A., Kurochkin Yu. A., Otchik V. S. Algebra of conserved operators for the Kepler–Coulomb problem in the spaces of constant curvature. Physics of Atomic Nuclei, 1998, vol. 61, no. 10, pp. 1778–1781.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Gritsev, V. V. The Higgs algebra and the Kepler problem in R 3 / V. V. Gritsev, Y. A. Kurochkin // J. Phys. A: Math. General. – 2000. – Vol. 33, № 22. – P. 4073–4080. https://doi.org/10.1088/0305-4470/33/22/310</mixed-citation><mixed-citation xml:lang="en">Gritsev V. V., Kurochkin, Y. A. The Higgs algebra and the Kepler problem in R 3. Journal of Physics A: Mathematical and General, 2000, vol. 33, no. 22, pp. 4073–4080. https://doi.org/10.1088/0305-4470/33/22/310</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Gritsev, V. V. Nonlinear symmetry algebra of the MIC-Kepler problem on the sphere S 3 / V. V. Gritsev, Y. A. Kurochkin, V. S. Otchik // J. Phys. A: Math. General. – 2000. – Vol. 33, № 27. – P. 4903–4910. https://doi.org/10.1088/0305-4470/33/27/307</mixed-citation><mixed-citation xml:lang="en">Gritsev V. V., Kurochkin Y. A., Otchik V. S. Nonlinear symmetry algebra of the MIC-Kepler problem on the sphere S 3. Journal of Physics A: Mathematical and General, 2000, vol. 33, no. 27, pp. 4903–4910. https://doi.org/10.1088/0305-4470/33/27/307</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Granovskii, Y. I. Quadratic algebra as a ‘hidden’ symmetry of the Hartmann potential / Y. I. Granovskii, I. M. Lutsenko, A. S. Zhedanov // J. Phys. A: Math. General. – 1991. – Vol. 24, № 16. – P. 3887–3894. ttps://doi.org/10.1088/0305-4470/24/16/024</mixed-citation><mixed-citation xml:lang="en">Granovskii Y. I., Lutsenko I. M., Zhedanov A. S. Quadratic algebra as a ‘hidden’ symmetry of the Hartmann potential. Journal of Physics A: Mathematical and General, 1991, vol. 24, no. 16, pp. 3887–3894. ttps://doi.org/10.1088/0305-4470/24/16/024</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Zhedanov, A. S. Hidden symmetry algebra and overlap coefficients for two ring-shaped potentials / A. S. Zhedanov // J. Phys. A: Math. General. – 1993. – Vol. 26, № 18. – P. 4633–4642. https://doi.org/10.1088/0305-4470/26/18/027</mixed-citation><mixed-citation xml:lang="en">Zhedanov A. S. Hidden symmetry algebra and overlap coefficients for two ring-shaped potentials. Journal of Physics A: Mathematical and General, 1993, vol. 26, no. 18, pp. 4633–4642. https://doi.org/10.1088/0305-4470/26/18/027</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Gal’bert, O. F. Dynamical symmetry of anisotropic singular oscillator / O. F. Gal’bert, Y. I. Granovskii, A. S. Zhedanov // Phys. Lett. A. – 1991. – Vol. 153, № 4/5. – P. 177–180. https://doi.org/10.1016/0375-9601(91)90789-b</mixed-citation><mixed-citation xml:lang="en">Gal’bert O. F., Granovskii Y. I., Zhedanov A. S. Dynamical symmetry of anisotropic singular oscillator. Physics Letters A, 1991, vol. 153, no. 4–5, pp. 177–180. https://doi.org/10.1016/0375-9601(91)90789-b</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Грановский, Я. И. Квадратичные алгебры и динамика в искривленном пространстве. I. Осциллятор / Я. И. Грановский, А. С. Жеданов, И. M. Луценко // теорет. и мат. физика. – 1992. – т. 91, № 2. – С. 207–216.</mixed-citation><mixed-citation xml:lang="en">Granovskii Ya. I., Zhedanov A. S., Lutsenko I. M. Quadratic algebras and dynamics in curved spaces. I. Oscillator. Theoretical and Mathematical Physics, 1992, vol. 91, no. 2, pp. 474–480. https://doi.org/10.1007/bf01018846</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Грановский, Я. И. Квадратичные алгебры и динамика в искривленном пространстве. II. Проблема Кеплера / Я. И. Грановский, А. С. Жеданов, И. M. Луценко // теорет. и мат. физика. – – 1992. – т. 91, № 3. – С. 396–410.</mixed-citation><mixed-citation xml:lang="en">Granovskii, Ya. I., Zhedanov, A. S., Lutsenko, I. M. Quadratic algebras and dynamics in curved spaces. II. The Kepler problem. Theoretical and Mathematical Physics, 1992, vol. 91, no. 3, pp. 604–612. https://doi.org/10.1007/bf01017335</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">The Higgs and Hahn algebras from a Howe duality perspective / L. Frappat [et al.] // Physics Letters A. – 2019. – Vol. 383, №. 14. – P. 1531–1535. https://doi.org/10.1016/j.physleta.2019.02.024</mixed-citation><mixed-citation xml:lang="en">Frappat, L., Gaboriaud J., Vinet, L., Vinet, S., Zhedanov, A. S. The Higgs and Hahn algebras from a Howe duality perspective. Physics Letters A, 2019, vol. 383, no. 14, pp. 1531–1535. https://doi.org/10.1016/j.physleta.2019.02.024</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Bellucci, S. The second Hopf map and Yang-Coulomb system on a 5D (pseudo)sphere / S. Bellucci, J. Toppan, V. Yeghikyan // J. Phys. A: Math. General. – 2010. – Vol. 43, № 4. – P. 045205. https://doi.org/10.1088/1751-8113/43/4/045205</mixed-citation><mixed-citation xml:lang="en">Bellucci S., Toppan J.,Yeghikyan V. The second Hopf map and Yang-Coulomb system on a 5D (pseudo)sphere. Journal of Physics A: Mathematical and General, 2010, vol. 43, no. 4, p. 045205. https://doi.org/10.1088/1751-8113/43/4/045205</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Generalized KS transformation: from five-dimensional hydrogen atom to eight-dimensional isotropic oscillator / Davtyan, L. S., [et al.] // J. Phys. A: Math. General. – 1987. – Vol. 20, № 17. – P. 6121–6126. https://doi.org/10.1088/0305-4470/20/17/044</mixed-citation><mixed-citation xml:lang="en">Davtyan L. S., Mardoyan L. G., Pogosyan G. S., Sissakian A. N., Ter-Antonyan V. M. Generalized KS transformation: from five-dimensional hydrogen atom to eight-dimensional isotropic oscillator. Journal of Physics A: Mathematical and General, 1987, vol. 20, no. 17, pp. 6121–6126. https://doi.org/10.1088/0305-4470/20/17/044</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Mardoyan, L. G. 8D oscillator as a hidden SU(2)-monopole / L. G. Mardoyan, A. N. Sissakian, V. M. Ter-Antonyan. – Dubna: JINR, 1998. – 14 p. – (Preprint / Joint Institute for Nuclear Research; E2-98-14).</mixed-citation><mixed-citation xml:lang="en">Mardoyan L. G., Sissakian A. N., Ter-Antonyan V. M. 8D oscillator as a hidden SU(2)-monopole. Dubna, JINR, 1998. 4 p. (Preprint / Joint Institute for Nuclear Research E2-98-14).</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Mardoyan, L. G. Hidden symmetry of the Yang-Coulomb system / L. G. Mardoyan, A. N. Sissakian, V. M. TerAntonyan // Mod. Phys. Lett. A. – 1999. – Vol. 14, № 19. – P. 1303–1307. https://doi.org/10.1142/s0217732399001395</mixed-citation><mixed-citation xml:lang="en">Mardoyan L. G., Sissakian A. N., Ter-Antonyan V. M. Hidden symmetry of the Yang-Coulomb system. Modern Physics Letters A, 1999, vol. 14, no. 19, pp. 1303–1307. https://doi.org/10.1142/s0217732399001395</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Mardoyan, L. G. Dyon-oscillator duality. Hidden symmetry of the Yang-Coulomb monopole / L. G. Mardoyan // Superintegrability in Classical and Quantum Systems. – 2004. – Vol. 37. – P. 99–108. https://doi.org/10.1090/crmp/037/09</mixed-citation><mixed-citation xml:lang="en">Mardoyan, L. G. Dyon-oscillator duality. Hidden symmetry of the Yang-Coulomb monopole. Superintegrability in Classical and Quantum Systems, 2004, vol. 37, pp. 99–108. https://doi.org/10.1090/crmp/037/09</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Marquette, I. Generalized five-dimensional Kepler system, Yang-Coulomb monopole, and Hurwitz transformation / I. Marquette // J. Math. Phys. – 2012. – Vol. 53, № 2. – P. 022103–12. https://doi.org/10.1063/1.3684955</mixed-citation><mixed-citation xml:lang="en">Marquette I. Generalized five-dimensional Kepler system, Yang-Coulomb monopole, and Hurwitz transformation. Journal of Mathematical Physics, 2012, vol. 53, no. 2, pp. 022103–12. https://doi.org/10.1063/1.3684955</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Pletyukhov, M. V. 8D oscillator and 5D Kepler problem: The case of nontrivial constraints / M. V. Pletyukhov, E. M. Tolkachev // J. Math. Phys. – 1999. – Vol. 40, № 1. – P. 93–100. https://doi.org/10.1063/1.532761</mixed-citation><mixed-citation xml:lang="en">Pletyukhov M. V., Tolkachev E. M. 8D oscillator and 5D Kepler problem: The case of nontrivial constraints. Journal of Mathematical Physics,1999, vol. 40, no. 1, pp. 93–100. https://doi.org/10.1063/1.532761</mixed-citation></citation-alternatives></ref><ref id="cit26"><label>26</label><citation-alternatives><mixed-citation xml:lang="ru">Pletyukhov, M. V. Hurwitz transformation and oscillator representation of a 5D isospin particle / M. V. Pletyukhov, E. M. Tolkachev // Rep. Math. Phys. – 1999. – Vol. 43, № 1/2. – P. 303–311. https://doi.org/10.1016/s0034-4877(99)80039-1</mixed-citation><mixed-citation xml:lang="en">Pletyukhov M. V., Tolkachev E. M. Hurwitz transformation and oscillator representation of a 5D isospin particle. Reports on Mathematical Physics,1999, vol. 43, no. 1–2, pp. 303–311. https://doi.org/10.1016/s0034-4877(99)80039-1</mixed-citation></citation-alternatives></ref><ref id="cit27"><label>27</label><citation-alternatives><mixed-citation xml:lang="ru">Pletyukhov, M. V. SO(6,2) dynamical symmetry of the SU(2) MIC-Kepler problem / M. V. Pletyukhov, E. M. Tolkachev // J. Phys. A: Math. General. – 1999. – Vol. 32, № 23. – P. L249–L253. https://doi.org/10.1088/0305-4470/32/23/101</mixed-citation><mixed-citation xml:lang="en">Pletyukhov M. V., Tolkachev E. M. SO(6,2) dynamical symmetry of the SU(2) MIC-Kepler problem. Journal of Physics A: Mathematical and General, 1999, vol. 32, no. 23, pp. L249–L253. https://doi.org/10.1088/0305-4470/32/23/101</mixed-citation></citation-alternatives></ref><ref id="cit28"><label>28</label><citation-alternatives><mixed-citation xml:lang="ru">The generalized Racah algebra as a commutant / J. Gaboriaud [et al.] // J. Phys.: Conf. Ser. – 2019. – Vol. 1194. – P. 012034. https://doi.org/10.1088/1742-6596/1194/1/012034</mixed-citation><mixed-citation xml:lang="en">Gaboriaud J., Vinet L., Vinet S., Zhedanov A. S. The generalized Racah algebra as a commutant. Journal of Physics: Conference Series, 2019, vol. 1194, pp. 012034. https://doi.org/10.1088/1742-6596/1194/1/012034</mixed-citation></citation-alternatives></ref><ref id="cit29"><label>29</label><citation-alternatives><mixed-citation xml:lang="ru">The Racah algebra as a commutant and Howe duality / J. Gaboriaud [et al.] // J. Phys. A: Math. Theor. – 2018. – Vol. 51, № 50. – P. 50LT01. https://doi.org/10.1088/1751-8121/aaee1a</mixed-citation><mixed-citation xml:lang="en">Gaboriaud J., Vinet L., Vinet S., Zhedanov A. S. The Racah algebra as a commutant and Howe duality. Journal of Physics A: Mathematical and Theoretical, 2018, vol. 51, no. 50, pp. 50LT01. https://doi.org/10.1088/1751-8121/aaee1a</mixed-citation></citation-alternatives></ref><ref id="cit30"><label>30</label><citation-alternatives><mixed-citation xml:lang="ru">Howe, R. Remarks on Classical Invariant Theory / R. Howe // Trans. Am. Math. Soc. – 1989. – Vol. 313, № 2. – P. 539–570. https://doi.org/10.2307/2001418</mixed-citation><mixed-citation xml:lang="en">Howe R. Remarks on Classical Invariant Theory. Transactions of the American Mathematical Society, 1989, vol. 313, no. 2, pp. 539–570. https://doi.org/10.2307/2001418</mixed-citation></citation-alternatives></ref><ref id="cit31"><label>31</label><citation-alternatives><mixed-citation xml:lang="ru">Dual pairing of symmetry and dynamical groups in physics / D. J. Rowe [et al.] // Rev. Modern Phys. – 2012. – Vol. 84, № 2. – P. 711–757. https://doi.org/10.1103/revmodphys.84.711</mixed-citation><mixed-citation xml:lang="en">Rowe D. J., Carvalho M. J., Repka J. Dual pairing of symmetry and dynamical groups in physics. Reviews of Modern Physics, 2012, vol. 84, no. 2, pp. 711–757. https://doi.org/10.1103/revmodphys.84.711</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>
