Suleimbekova Ao 1

1. Estimates of singular numbers (s-numbers) for a class of degenerate elliptic operators
2. Existence, Compactness, Estimates of Eigenvalues and s-Numbers of a Resolvent for a Linear Singular Operator of the Korteweg-de Vries Type
3. On the existence of the resolvent and separability of a class of the Korteweg-de Vriese type linear singular operators
4. On the existence and coercive estimates of solutions to the Dirichlet problem for a class of third-order differential equations
5. Separability of the third-order differential operator given on the whole plane
1