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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2017-8-3-323-333</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-604</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="en"><subject>MATHEMATICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>МАТЕМАТИКА</subject></subj-group></article-categories><title-group><article-title>On a problem for the loaded degenerating mixed type equation involving integral-differential operators</article-title><trans-title-group xml:lang="ru"><trans-title></trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Islomov</surname><given-names>B. I.</given-names></name></name-alternatives><bio xml:lang="en"><p>Universitetskaya-4, VUZgorodog, Tashkent, 100174</p></bio><email xlink:type="simple">islomovbozor@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Abdullayev</surname><given-names>O. Kh.</given-names></name></name-alternatives><bio xml:lang="en"><p>Universitetskaya-4, VUZgorodog, Tashkent, 100174</p></bio><email xlink:type="simple">obidjon.mth@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="western" xml:lang="en"><surname>Ochilova</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="en"><p>st. Amir Timur. 57, Tashkent, 100000</p></bio><email xlink:type="simple">nargiz.ochilova@gmail.com</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>National University of Uzbekistan</institution><country>Uzbekistan</country></aff><aff xml:lang="en" id="aff-2"><institution>Tashkent financial institute</institution><country>Uzbekistan</country></aff><pub-date pub-type="collection"><year>2017</year></pub-date><pub-date pub-type="epub"><day>11</day><month>08</month><year>2025</year></pub-date><volume>8</volume><issue>3</issue><fpage>323</fpage><lpage>333</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Islomov B.I., Abdullayev O.K., Ochilova N.K., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Islomov B.I., Abdullayev O.K., Ochilova N.K.</copyright-holder><copyright-holder xml:lang="en">Islomov B.I., Abdullayev O.K., Ochilova N.K.</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://nanojournal.ifmo.ru/jour/article/view/604">https://nanojournal.ifmo.ru/jour/article/view/604</self-uri><abstract><p>This work aims to study the existence and uniqueness of a solution for a problem of the loaded degenerating mixed type equation. We consider the loaded parabolic-hyperbolic equation involving the Caputo fractional derivative and Riemann-Liouville integrals. The uniqueness of solution is proved by using the method of integral energy applying an extremum principle. Based on the statement of equivalence between “The existence and uniqueness of solution” and “Solvability of the respectively Fredholm type integral equations”, the existence of a solution was proved.</p></abstract><kwd-group xml:lang="en"><kwd>loaded degenerating equation</kwd><kwd>parabolic-hyperbolic type</kwd><kwd>integral operators</kwd><kwd>Caputo fractional derivative</kwd><kwd>existence and uniqueness of solution</kwd><kwd>integral equations</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The authors are grateful to the reviewers for useful suggestions which improve the contents of this paper.</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">Nakhushev A. M. The loaded equations and their applications. Nauka, M., 2012.</mixed-citation><mixed-citation xml:lang="en">Nakhushev A. M. The loaded equations and their applications. Nauka, M., 2012.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Abdullaev O. Kh. Non-local Problem for the Loaded Integral-differential Equation in Double-connected Domain. JPDE, 2016, 29(1), P. 1–12.</mixed-citation><mixed-citation xml:lang="en">Abdullaev O. Kh. Non-local Problem for the Loaded Integral-differential Equation in Double-connected Domain. JPDE, 2016, 29(1), P. 1–12.</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Abdullaev O. Kh. About a problem for loaded parabolic-hyperbolictype equations with fractional derivatives. Hindawi Publishing Corporation International Journal of Differential Equations, 2016, Article ID 9815796, 6 p., http://dx.doi.org/10.1155/2016/9815796.</mixed-citation><mixed-citation xml:lang="en">Abdullaev O. Kh. About a problem for loaded parabolic-hyperbolictype equations with fractional derivatives. Hindawi Publishing Corporation International Journal of Differential Equations, 2016, Article ID 9815796, 6 p., http://dx.doi.org/10.1155/2016/9815796.</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Kilbas A. A., Srivastava H. M., Trujillo J. J. Theory and Applications of Fractional Differential Equations, in: North-Holland Mathematics Studies, Amsterdam, 2006, (204), Elsevier Science.</mixed-citation><mixed-citation xml:lang="en">Kilbas A. A., Srivastava H. M., Trujillo J. J. Theory and Applications of Fractional Differential Equations, in: North-Holland Mathematics Studies, Amsterdam, 2006, (204), Elsevier Science.</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Miller K. S., Ross B. An Introduction to the Fractional Calculus and Differential Equations, John Wiley, New York, 1993.</mixed-citation><mixed-citation xml:lang="en">Miller K. S., Ross B. An Introduction to the Fractional Calculus and Differential Equations, John Wiley, New York, 1993.</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Podlubny I. Fractional Differential Equations, Academic Press, New York, 1999.</mixed-citation><mixed-citation xml:lang="en">Podlubny I. Fractional Differential Equations, Academic Press, New York, 1999.</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Samko S. G., Kilbas A. A., Marichev O. I. Fractional Integral and Derivatives: Theory and Applications. Gordon and Breach, Longhorne, PA, 1993.</mixed-citation><mixed-citation xml:lang="en">Samko S. G., Kilbas A. A., Marichev O. I. Fractional Integral and Derivatives: Theory and Applications. Gordon and Breach, Longhorne, PA, 1993.</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Magin R. Fractional calculus in bioengineering, Crit. Rev. Biom. Eng., 2004, 32(1), P. 1–104.</mixed-citation><mixed-citation xml:lang="en">Magin R. Fractional calculus in bioengineering, Crit. Rev. Biom. Eng., 2004, 32(1), P. 1–104.</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Ortigueira M. Special issue on fractional signal processing and applications, Signal Processing, 2003, 83(11), P. 2285–2480.</mixed-citation><mixed-citation xml:lang="en">Ortigueira M. Special issue on fractional signal processing and applications, Signal Processing, 2003, 83(11), P. 2285–2480.</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Oldham K. B. Fractional differential equations in electrochemistry. Advances in Engineering Software, 2008, P. 12012.</mixed-citation><mixed-citation xml:lang="en">Oldham K. B. Fractional differential equations in electrochemistry. Advances in Engineering Software, 2008, P. 12012.</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Metzler R, Joseph K. Boundary value problems for fractional diffusion equations, Physics A, 2000, 278, P. 107–125.</mixed-citation><mixed-citation xml:lang="en">Metzler R, Joseph K. Boundary value problems for fractional diffusion equations, Physics A, 2000, 278, P. 107–125.</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Rivero M. , Trujillo J. J, Velasco M. P., On Deterministic Fractional Models, Edited by D. Baleanu, Ziya B. Guvenc, J.A. Tenreiro Machado in the book New Trends in Nanotechnology and Fractional Calculus Applications, Springer Netherlands, 2010, P. 123–150.</mixed-citation><mixed-citation xml:lang="en">Rivero M. , Trujillo J. J, Velasco M. P., On Deterministic Fractional Models, Edited by D. Baleanu, Ziya B. Guvenc, J.A. Tenreiro Machado in the book New Trends in Nanotechnology and Fractional Calculus Applications, Springer Netherlands, 2010, P. 123–150.</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Marichev O. I., Kilbas A. A., Repin O. A. Boundary value problems for partial differential equations with discounting coefficients. Izdat. Samar. Gos. Ekonom. Univ., Samara, 2008 (In Russian).</mixed-citation><mixed-citation xml:lang="en">Marichev O. I., Kilbas A. A., Repin O. A. Boundary value problems for partial differential equations with discounting coefficients. Izdat. Samar. Gos. Ekonom. Univ., Samara, 2008 (In Russian).</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Repin O. A. Boundary value problems with shift for equations of hyperbolic and mixed type. Saratov Univ., Saratov, 1992 (In Russian).</mixed-citation><mixed-citation xml:lang="en">Repin O. A. Boundary value problems with shift for equations of hyperbolic and mixed type. Saratov Univ., Saratov, 1992 (In Russian).</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Karimov E. T., Akhatov J. A boundary problem with integral gluing condition for a parabolic-hyperbolic equation involving the Caputo fractional derivative. EJDE, 2014, 2014, P. 1–6. ,</mixed-citation><mixed-citation xml:lang="en">Karimov E. T., Akhatov J. A boundary problem with integral gluing condition for a parabolic-hyperbolic equation involving the Caputo fractional derivative. EJDE, 2014, 2014, P. 1–6. ,</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Kilbas A. A., Repin O. A. An analog of the Bitsadze-Samarskii problem for a mixed type equation with a fractional derivative. Differential equations, 2003, 39(5), P. 674680.</mixed-citation><mixed-citation xml:lang="en">Kilbas A. A., Repin O. A. An analog of the Bitsadze-Samarskii problem for a mixed type equation with a fractional derivative. Differential equations, 2003, 39(5), P. 674680.</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Kilbas A. A. Repin O. A. An analog of the Tricomi problem for a mixed type equation with a partial fractional derivative. Fractional Calculus and Applied Analysis, 2010, 13(1), P. 6984.</mixed-citation><mixed-citation xml:lang="en">Kilbas A. A. Repin O. A. An analog of the Tricomi problem for a mixed type equation with a partial fractional derivative. Fractional Calculus and Applied Analysis, 2010, 13(1), P. 6984.</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Pskhu A. V. Partial differential equation of fractional order. (Russian). Nauka, Moscow, 2000.</mixed-citation><mixed-citation xml:lang="en">Pskhu A. V. Partial differential equation of fractional order. (Russian). Nauka, Moscow, 2000.</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Smirnov M. M. Mixed type equations. M., Nauka, 2000.</mixed-citation><mixed-citation xml:lang="en">Smirnov M. M. Mixed type equations. M., Nauka, 2000.</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Pskhu A. V. Solution of boundary value problems fractional diffusion equation by the Green function method. Differential equation, 2003, 39(10), P. 1509–1513.</mixed-citation><mixed-citation xml:lang="en">Pskhu A. V. Solution of boundary value problems fractional diffusion equation by the Green function method. Differential equation, 2003, 39(10), P. 1509–1513.</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>
