In this paper the spectral properties of the nonlocal Samarskii-Ionkin type problems for a fourth-order ordinary differential equation are investigated. The eigenvalues and corresponding eigenfunctions are found and their completeness are studied. The spectral properties of the adjoint problem are also studied. Further, the Riesz basis property of the systems of root functions of these problems is proved.
| Mualliflar | Kadirkulov , B. J., Uzaqbaeva , D. E |
|---|---|
| Jurnal | O‘zbekiston matematika jurnali |
| Nashr sanasi | 2025-11-03 |
| Jild | 69 |
| Son | 4 |
| Betlar | 141-151 |
| Til | Ingliz |
| DOI | 10.29229/uzmj.2025-4-14 |
DOI: 10.29229/uzmj.2025-4-14 · Maqolaning asl sahifasi
Ionkin-Samarskii type problems; non-self-adjoint problem; eigenvalues and eigenfunctions; completeness; Riesz basis
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