Abstract
In this paper, we study an analogue of Tricomi problem for a parabolic–hyperbolic equation. One boundary condition in the parabolic part of the domain contains the third derivative of the space variable. A spectral problem with a spectral parameter in the boundary condition arises, when solving this problem. The system of eigenfunctions of this problem (after removing any one eigenfunction) forms a Riesz basis. The conditions for the correctness of the formulated Tricomi problem are found.
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The research is financially supported by a grant from the Ministry of Science and Education of the Republic of Kazakhstan (No. AP13067805).
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This work was carried out in collaboration between both authors. MS designed the study and guided the research. BD performed the analysis and wrote the first draft of the manuscript. MS and BD managed the analysis of the study. Both authors read and approved the final manuscript.
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Communicated by Sohrab Shahshahani.
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Derbissaly, B., Sadybekov, M. Tricomi Problem for Mixed Parabolic–Hyperbolic Equation with Higher Order Boundary Condition. Bull. Iran. Math. Soc. 49, 52 (2023). https://doi.org/10.1007/s41980-023-00793-5
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DOI: https://doi.org/10.1007/s41980-023-00793-5
Keywords
- Parabolic–hyperbolic type equation
- Tricomi problem
- Higher order derivatives in boundary condition
- Problem with a spectral parameter in a boundary condition
- Riesz basis