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math.SP2008
On the Riesz Basis Property of the Eigen- and Associated Functions of Periodic and Antiperiodic Sturm-Liouville Problems
A. A. Shkalikov, O. A. Veliev
The paper deals with the Sturm-Liouville operator generated in the space by periodic or antiperiodic bou…
math.SP2007
Uniform Convergence of the Spectral Expansion for a Differential Operator with Periodic Matrix Coefficients
O. A. Veliev
In this paper, we obtain asymptotic formulas for eigenvalues and eigenfunctions of the operator generated by a system of ordinary differential equations with summable coefficients…