<?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">10.55452/1998-6688-2026-23-1-231-239</article-id><article-id custom-type="elpub" pub-id-type="custom">kaz29-2517</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>РАЗРЕШИМОСТЬ КРАЕВОЙ ЗАДАЧИ ДЛЯ ИНТЕГРО-ДИФФЕРЕНЦИАЛЬНЫХ УРАВНЕНИЙ ДРОБНОГО ПОРЯДКА С ИНВОЛЮЦИЕЙ</article-title><trans-title-group xml:lang="en"><trans-title>SOLVABILITY OF A BOUNDARY VALUE PROBLEM FOR FRACTIONAL-ORDER INTEGRO-DIFFERENTIAL EQUATIONS WITH INVOLUTION</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4311-5807</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Усманов</surname><given-names>К. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Usmanov</surname><given-names>K. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.ф.-м.н, доцент</p><p>г. Туркестан</p></bio><bio xml:lang="en"><p>Cand. Phys.-Math. Sc., Associate Professor</p><p>Turkestan</p></bio><email xlink:type="simple">kairat.usmanov@ayu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2093-1879</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Назарова</surname><given-names>К. Ж.</given-names></name><name name-style="western" xml:lang="en"><surname>Nazarova</surname><given-names>K. Zh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>к.ф.-м.н, доцент</p><p>г. Туркестан</p></bio><bio xml:lang="en"><p>Cand. Phys.-Math. Sc., Associate Professor</p><p>Turkestan</p></bio><email xlink:type="simple">kulzina.nazarova@ayu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-7507-4535</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Еркишева</surname><given-names>Ж. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Yerkisheva</surname><given-names>Zh. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>PhD</p><p>г. Туркестан</p></bio><bio xml:lang="en"><p>PhD</p><p>Turkestan</p></bio><email xlink:type="simple">zhazira.erkisheva@ayu.edu.kz</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru">Международный казахско-турецкий университет им. А. Ясави<country>Казахстан</country></aff><aff xml:lang="en">International Kazakh-Turkish University named after H.A. Yasawi<country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>29</day><month>03</month><year>2026</year></pub-date><volume>23</volume><issue>1</issue><fpage>231</fpage><lpage>239</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Усманов К.И., Назарова К.Ж., Еркишева Ж.С., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Усманов К.И., Назарова К.Ж., Еркишева Ж.С.</copyright-holder><copyright-holder xml:lang="en">Usmanov K.K., Nazarova K.Z., Yerkisheva Z.S.</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/2517">https://vestnik.kbtu.edu.kz/jour/article/view/2517</self-uri><abstract><p>В данной работе рассматривается краевая задача для интегро-дифференциального уравнения дробного порядка 0 &lt;α &lt;1 с инволютивным преобразованием. Для исследования разрешимости поставленной краевой задачи используется метод параметризации, предложенный профессором Д. Джумабаевым. Для этого вводится параметр μ = x (0) и выполняется замена переменных 0 &lt;α &lt;1. Введенная замена переменных разбивает рассматриваемую задачу формально на две части, т.е. задачу Коши для интегро-дифференциального уравнения дробного порядка 0 &lt;α &lt;1 с инволютивным преобразованием и линейное уравнение относительно введенного параметра. Определяя решение задачи Коши для интегро-дифференциального уравнения дробного порядка 0 &lt;α &lt;1 с инволютивным преобразованием и подставляя его в краевое условие, получим линейное уравнение относительно введенного параметра. Считая, что коэффициент данного уравнения не равен нулю, находим единственное решение исследуемой краевой задачи. Установлена взаимосвязь между разрешимостью исследуемой задачи и коэффициентом полученного уравнения.</p></abstract><trans-abstract xml:lang="en"><p>This paper considers a boundary value problem for a fractional-order integro-differential equation 0&lt;α&lt;1 with an involutivity transformation. To investigate the solvability of the boundary value problem, we use the parameterization method proposed by Professor D. Dzhumabaev. This is done by introducing a parameter μ = x(0) and changing variables. x (t ) = u (t ) +μ This change of variables formally divides the problem into two parts: a Cauchy problem for a fractional-order integro-differential equation with an involutive transformation 0 &lt; 𝛼𝛼 &lt; 1 and a linear equation with respect to the introduced parameter. By determining the solution to the Cauchy problem for a fractional-order integro-differential equation with an involutive transformation 0 &lt; 𝛼𝛼 &lt; 1 and substituting it into the boundary condition, we obtain a linear equation with respect to the introduced parameter. Assuming that the coefficient of this equation is nonzero, we find a unique solution to the boundary value problem. A relationship is established between the solvability of the problem and the coefficient of the resulting equation.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>инволюция</kwd><kwd>краевая задача</kwd><kwd>метод параметризации</kwd><kwd>параметр</kwd><kwd>задача Коши</kwd><kwd>разрешимость</kwd></kwd-group><kwd-group xml:lang="en"><kwd>involution</kwd><kwd>boundary value problem</kwd><kwd>parameterization method</kwd><kwd>parameter</kwd><kwd>Cauchy problem</kwd><kwd>solvability</kwd></kwd-group><funding-group xml:lang="ru"><funding-statement>исследование было профинансировано Комитетом науки Министерства образования и науки Республики Казахстан (грант № AP23488086).</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">Kilbas, A.A., Srivastava, H.M., Trujillo, J.J. Theory and applications of fractional differential equations (Elsevier, 2006), pp. 204.</mixed-citation><mixed-citation xml:lang="en">Kilbas, A.A., Srivastava, H.M., Trujillo, J.J. Theory and applications of fractional differential equations (Elsevier, 2006), pp. 204.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Przeworska-Rolewicz, D. Equations with Transformed Argument, An Algebraic Approach, 1st ed. (Elsevier Scientific: Amsterdam, The Netherlands, 1973).</mixed-citation><mixed-citation xml:lang="en">Przeworska-Rolewicz, D. Equations with Transformed Argument, An Algebraic Approach, 1st ed. (Elsevier Scientific: Amsterdam, The Netherlands, 1973).</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Wiener, J. Generalized Solutions of Functional Differential Equations, 1st ed. (World Scientific: Singapore; River Edge NJ, USA; London, UK; Hong Kong, China, 1993).</mixed-citation><mixed-citation xml:lang="en">Wiener, J. Generalized Solutions of Functional Differential Equations, 1st ed. (World Scientific: Singapore; River Edge NJ, USA; London, UK; Hong Kong, China, 1993).</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Cabada, A., Tojo, F.A.F. Differential Equations with Involutions, 1st ed. (Atlantis Press: Paris, France, 2015), ISBN 978-94-6239-120-8.</mixed-citation><mixed-citation xml:lang="en">Cabada, A., Tojo, F.A.F. Differential Equations with Involutions, 1st ed. (Atlantis Press: Paris, France, 2015), ISBN 978-94-6239-120-8.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Al-Salti, N., Kerbal, S., Kirane, M. Initial-boundary value problems for a time-fractional differential equation with involution perturbation. Math. Model. Nat. Phenomena, 14, 312 (2019).</mixed-citation><mixed-citation xml:lang="en">Al-Salti, N., Kerbal, S., Kirane, M. Initial-boundary value problems for a time-fractional differential equation with involution perturbation. Math. Model. Nat. Phenomena, 14, 312 (2019).</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Sarsenbi, A., Sarsenbi, A. On eigenfunctions of the boundary value problems for second order differential equations with involution. Symmetry, 13, 1972 (2021).</mixed-citation><mixed-citation xml:lang="en">Sarsenbi, A., Sarsenbi, A. On eigenfunctions of the boundary value problems for second order differential equations with involution. Symmetry, 13, 1972 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Turmetov, B., Karachik, V. On eigenfunctions and eigenvalues of a nonlocal Laplace operator with multiple Involution. Symmetry, 13, 1981 (2021).</mixed-citation><mixed-citation xml:lang="en">Turmetov, B., Karachik, V. On eigenfunctions and eigenvalues of a nonlocal Laplace operator with multiple Involution. Symmetry, 13, 1981 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Dildabek, G., Ivanova, M.B., Sadybekov, M.A. On root functions of nonlocal differential secondorder operator with boundary conditions of periodic type. Journal of Mathematics, Mechanics and Computer Science, 112(4), 29–44 (2021).</mixed-citation><mixed-citation xml:lang="en">Dildabek, G., Ivanova, M.B., Sadybekov, M.A. On root functions of nonlocal differential secondorder operator with boundary conditions of periodic type. Journal of Mathematics, Mechanics and Computer Science, 112(4), 29–44 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Kirane, M., Sarsenbi, A.A. Solvability of mixed problems for a fourth-order equation with involution and fractional derivative. Fractal and Fractional, 7(2), 131 (2023).</mixed-citation><mixed-citation xml:lang="en">Kirane, M., Sarsenbi, A.A. Solvability of mixed problems for a fourth-order equation with involution and fractional derivative. Fractal and Fractional, 7(2), 131 (2023).</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Mussirepova, E., Sarsenbi, A.A., Sarsenbi, A.M. Solvability of mixed problems for the wave equation with reflection of the argument. Mathematical Methods in the Applied Sciences, 45(17), 11262–11271 (2022).</mixed-citation><mixed-citation xml:lang="en">Mussirepova, E., Sarsenbi, A.A., Sarsenbi, A.M. Solvability of mixed problems for the wave equation with reflection of the argument. Mathematical Methods in the Applied Sciences, 45(17), 11262–11271 (2022).</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Yuldashev, T.K. Mixed problem for a nonlinear parabolic equation with involution. Lobachevskii Journal of Mathematics, 44(12), 5519–5527 (2023).</mixed-citation><mixed-citation xml:lang="en">Yuldashev, T.K. Mixed problem for a nonlinear parabolic equation with involution. Lobachevskii Journal of Mathematics, 44(12), 5519–5527 (2023).</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Benabbes, F., Boussetila, N., Lakhdari, A. The modified fractional- order quasi- reversibility method for a class of direct and inverse problems governed by time- fractional heat equations with involution perturbation. Mathematical Methods in the Applied Sciences, 47(12), 9524–9555 (2024).</mixed-citation><mixed-citation xml:lang="en">Benabbes, F., Boussetila, N., Lakhdari, A. The modified fractional- order quasi- reversibility method for a class of direct and inverse problems governed by time- fractional heat equations with involution perturbation. Mathematical Methods in the Applied Sciences, 47(12), 9524–9555 (2024).</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumabayev, D.S. Criteria for the unique solvability of a linear boundary-value problem for an ordinary differential equation. Comput. Maths Math. Phys., 29(34), 34–46 (1989).</mixed-citation><mixed-citation xml:lang="en">Dzhumabayev, D.S. Criteria for the unique solvability of a linear boundary-value problem for an ordinary differential equation. Comput. Maths Math. Phys., 29(34), 34–46 (1989).</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Assanova, A.T., Bakirova, E.A., Kadirbayeva, Z.M. Numerical Solution to a Control Problem for Integro-Differential Equations. Comput. Math. and Math. Phys., 60(2), 203–221 (2020).</mixed-citation><mixed-citation xml:lang="en">Assanova, A.T., Bakirova, E.A., Kadirbayeva, Z.M. Numerical Solution to a Control Problem for Integro-Differential Equations. Comput. Math. and Math. Phys., 60(2), 203–221 (2020).</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Dzhumabaev, D.S. An algorithm for solving a linear two-point boundary value problem for an integrodifferential equation. Computational Mathematics and Mathematical Physics, 53(6), 736–758 (2013).</mixed-citation><mixed-citation xml:lang="en">Dzhumabaev, D.S. An algorithm for solving a linear two-point boundary value problem for an integrodifferential equation. Computational Mathematics and Mathematical Physics, 53(6), 736–758 (2013).</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Nazarova, K., Usmanov, K. On a boundary value problem for systems of integro-differential equations with involution. International Journal of Applied Mathematics, 34(2), 225–235 (2021).</mixed-citation><mixed-citation xml:lang="en">Nazarova, K., Usmanov, K. On a boundary value problem for systems of integro-differential equations with involution. International Journal of Applied Mathematics, 34(2), 225–235 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Usmanov, K., Nazarova, K., Yerkisheva, Z. On the unique solvability of a boundary value problem for systems of loaded integro-differential equations with Involution. Lobachevskii Journal of Mathematics, 42(12), 3022–3034 (2021).</mixed-citation><mixed-citation xml:lang="en">Usmanov, K., Nazarova, K., Yerkisheva, Z. On the unique solvability of a boundary value problem for systems of loaded integro-differential equations with Involution. Lobachevskii Journal of Mathematics, 42(12), 3022–3034 (2021).</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Nazarova, K., Usmanov, K. Unique solvability of boundary value problem for functional differential equations with involution. Bulletin of the Karaganda University – Mathematics, 3(103), 68–75 (2021).</mixed-citation><mixed-citation xml:lang="en">Nazarova, K., Usmanov, K. Unique solvability of boundary value problem for functional differential equations with involution. Bulletin of the Karaganda University – Mathematics, 3(103), 68–75 (2021).</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>
