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Optimization of boundary controls by elastic boundary forces at two ends of a string during an arbitrary sufficiently large time interval \(T\). (English. Russian original) Zbl 1151.49006

Dokl. Math. 76, No. 3, 896-903 (2007); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 417, No. 4, 456-463 (2007).
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Optimization of a control by an elastic boundary force during an arbitrary sufficiently large time interval \(T\) at one end of a string with second end free. (English. Russian original) Zbl 1151.49005

Dokl. Math. 76, No. 3, 861-865 (2007); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 417, No. 3, 308-312 (2007).
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Optimization of boundary controls by displacements at two ends of a string during an arbitrary sufficiently large time interval. (English. Russian original) Zbl 1151.49004

Dokl. Math. 76, No. 3, 828-834 (2007); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 417, No. 2, 160-166 (2007).
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Optimization of a boundary control by a displacement at one end of a string with second end free during an arbitrary sufficiently large time interval. (English. Russian original) Zbl 1151.49003

Dokl. Math. 76, No. 3, 806-811 (2007); translation from Dokl. Akad. Nauk, Ross. Akad. Nauk 417, No. 1, 12-17 (2007).
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Spectral theory of differential operators. Self-adjoint differential operators. Transl. from the Russian. (English) Zbl 0874.35002

New York, NY: Consultants Bureau. xvii, 390 p. (1995).
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Necessary and sufficient conditions for the eigenvectors and associated vectors of discontinuous second order operators to be Riesz bases. (English. Russian original) Zbl 0619.34027

Differ. Equations 22, 1409-1419 (1986); translation from Differ. Uravn. 22, No. 12, 2059-2071 (1986).
Reviewer: R.Kodnar
MSC:  34L99
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