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A. Makin (2017)
Asymptotics of cylindrical functions in the complex domain: IDifferential Equations, 53
M Keldysh (1971)
ON THE COMPLETENESS OF THE EIGENFUNCTIONS OF SOME CLASSES OF NON-SELFADJOINT LINEAR OPERATORSRussian Mathematical Surveys, 26
(1974)
Kurs vysshei matematiki (Course of Higher Mathematics)
(1965)
Functional Analysis, Berlin: Springer-Verlag
(1965)
Translated under the title Funktsional'nyi analiz
A. Makin (2017)
Asymptotics of cylindrical functions in the complex domain: IIDifferential Equations, 53
(1977)
Operatory Shturma–Liuvillya i ikh prilozheniya (Sturm–Liouville Operators and Their Applications)
A. Makin (2018)
Basis Properties of the System of Root Functions of the Sturm–Liouville Operator with Degenerate Boundary Conditions: IDifferential Equations, 54
(1969)
Kurs differentsial'nogo i integral'nogo ischisleniya (Course of Differential and Integral Calculus)
(1978)
Spetsial’nye funktsii matematicheskoi fiziki (Special Functions of Mathematical Physics)
The spectral problem for the Sturm–Liouville operator with arbitrary complex-valued potential q(x) of the class L 1(0, π) and degenerate boundary conditions is considered. We prove that the system of root functions of this operator is not a basis in the space L 2(0, π).
Differential Equations – Springer Journals
Published: Feb 27, 2019
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