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Found 14 Documents (Results 1–14)

On spectral properties of the one-dimensional Stark operator on the semiaxis. (English. Russian original) Zbl 1509.34089

Ukr. Math. J. 71, No. 11, 1813-1819 (2020); translation from Ukr. Mat. Zh. 71, No. 11, 1579-1584 (2019).
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Spectral properties of nonself-adjoint nonlocal boundary-value problems for the operator of differentiation of even order. (English. Ukrainian original) Zbl 1425.34099

Ukr. Math. J. 70, No. 6, 851-865 (2018); translation from Ukr. Mat. Zh. 70, No. 6, 739-751 (2018).
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On generalized regularized trace of a fourth-order differential operator with operator coefficient. (English. Ukrainian original) Zbl 1314.34167

Ukr. Math. J. 66, No. 1, 145-152 (2014); translation from Ukr. Mat. Zh. 66, No. 1, 128-134 (2014).
MSC:  34L05 34B08 34G10
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Inverse problem for a Sturm-Liouville elliptic equation in a Hilbert space. (English. Russian original) Zbl 0754.34061

Ukr. Math. J. 43, No. 11, 1428-1431 (1991); translation from Ukr. Mat. Zh. 43, No. 11, 1537-1540 (1991).
Reviewer: Y.P.Mishev (Sofia)
MSC:  34G10 34L05 34A55
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Inverse problem of the spectral analysis and non-Abelian chains of nonlinear equations. (English. Russian original) Zbl 0736.34070

Ukr. Math. J. 42, No. 6, 645-658 (1990); translation from Ukr. Mat. Zh. 42, No. 6, 730-747 (1990).
MSC:  34L05 34K05 34A55
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Oscillation properties of the spectrum of a boundary-value problem with Green’s function of variable sign. (English. Russian original) Zbl 0702.34029

Ukr. Math. J. 41, No. 11, 1309-1314 (1989); translation from Ukr. Mat. Zh. 41, No. 11, 1521-1526 (1989).
MSC:  34B27 34B10 34L05
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