Kaiyrbek Z 1

1. Determination of Stiffness Coefficients at the Internal Vertices of the Tree Based on a Finite Set of Eigenvalues of an Asymmetric Second-Order Linear Differential Operator
2. Identification of the domain of the sturm–liouville operator on a star graph
3. Integral representation of the fundamental system of solutions for third order differential operators and completeness of the system of root functions of one irregular boundary value problem
4. On the Uniqueness of the Recovery of the Domain of the Perturbed Laplace Operator
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