Pivovarchik, Vyacheslav; Chernyshenko, Anastasia Cospectral quantum graphs with Dirichlet conditions at pendant vertices. (English. Ukrainian original) Zbl 07742652 Ukr. Math. J. 75, No. 3, 439-455 (2023); translation from Ukr. Mat. Zh. 75, No. 3, 382-396 (2023). MSC: 34B24 34B45 34L05 05C90 PDFBibTeX XMLCite \textit{V. Pivovarchik} and \textit{A. Chernyshenko}, Ukr. Math. J. 75, No. 3, 439--455 (2023; Zbl 07742652); translation from Ukr. Mat. Zh. 75, No. 3, 382--396 (2023) Full Text: DOI
Makhmudova, M. G.; Khanmamedov, A. Kh. 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). MSC: 34L05 34L40 34L15 34L20 PDFBibTeX XMLCite \textit{M. G. Makhmudova} and \textit{A. Kh. Khanmamedov}, Ukr. Math. J. 71, No. 11, 1813--1819 (2020; Zbl 1509.34089); translation from Ukr. Mat. Zh. 71, No. 11, 1579--1584 (2019) Full Text: DOI
Baranets’kyi, Ya. O.; Kalenyuk, P. I.; Kolyasa, L. I. 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). MSC: 34L05 34B10 47E05 34L10 PDFBibTeX XMLCite \textit{Ya. O. Baranets'kyi} et al., Ukr. Math. J. 70, No. 6, 851--865 (2018; Zbl 1425.34099); translation from Ukr. Mat. Zh. 70, No. 6, 739--751 (2018) Full Text: DOI
Aliev, A. R. On the solvability of a fourth-order operator-differential equation with multiple characteristic. (English. Ukrainian original) Zbl 1317.34142 Ukr. Math. J. 66, No. 5, 781-791 (2014); translation from Ukr. Mat. Zh. 66, No. 5, 699-707 (2014). MSC: 34G10 34L05 PDFBibTeX XMLCite \textit{A. R. Aliev}, Ukr. Math. J. 66, No. 5, 781--791 (2014; Zbl 1317.34142); translation from Ukr. Mat. Zh. 66, No. 5, 699--707 (2014) Full Text: DOI
Aslanova, N. M.; Bairamogly, M. 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 PDFBibTeX XMLCite \textit{N. M. Aslanova} and \textit{M. Bairamogly}, Ukr. Math. J. 66, No. 1, 145--152 (2014; Zbl 1314.34167); translation from Ukr. Mat. Zh. 66, No. 1, 128--134 (2014) Full Text: DOI
Dymarskij, Ya. M. On manifolds of eigenfunctions and potentials generated by a family of periodic boundary-value problems. (English. Russian original) Zbl 0941.34014 Ukr. Math. J. 48, No. 6, 866-879 (1996); translation from Ukr. Mat. Zh. 48, No. 6, 771-781 (1996). MSC: 34B24 34L05 47E05 PDFBibTeX XMLCite \textit{Ya. M. Dymarskij}, Ukr. Math. J. 48, No. 6, 866--879 (1996; Zbl 0941.34014); translation from Ukr. Mat. Zh. 48, No. 6, 771--781 (1996) Full Text: DOI
Kats, I. S. Spectral theory of a string. (English. Russian original) Zbl 0831.34082 Ukr. Math. J. 46, No. 3, 159-182 (1994); translation from Ukr. Mat. Zh. 46, No. 3, 155-176 (1994). MSC: 34L05 47E05 34-02 PDFBibTeX XMLCite \textit{I. S. Kats}, Ukr. Math. J. 46, No. 3, 159--182 (1994; Zbl 0831.34082); translation from Ukr. Mat. Zh. 46, No. 3, 155--176 (1994) Full Text: DOI
Berezanskij, Yu. M.; Konstantinov, A. Yu. Eigenvector expansion of multiparameter spectral problems. (English) Zbl 0939.47500 Ukr. Math. J. 44, No. 7, 813-823 (1992); and Ukr. Mat. Zh. 44, No. 7, 901-913 (1992). MSC: 47A70 34L05 35P05 47F05 47N20 PDFBibTeX XMLCite \textit{Yu. M. Berezanskij} and \textit{A. Yu. Konstantinov}, Ukr. Math. J. 44, No. 7, 813--823 (1992; Zbl 0939.47500) Full Text: DOI
Gorbachuk, M. L.; Knyukh, B. I. 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 PDFBibTeX XMLCite \textit{M. L. Gorbachuk} and \textit{B. I. Knyukh}, Ukr. Math. J. 43, No. 11, 1428--1431 (1991; Zbl 0754.34061); translation from Ukr. Mat. Zh. 43, No. 11, 1537--1540 (1991) Full Text: DOI
Berezanskij, Yu. M.; Gekhtman, M. I. 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). Reviewer: W.D.Evans (Cardiff) MSC: 34L05 34K05 34A55 PDFBibTeX XMLCite \textit{Yu. M. Berezanskij} and \textit{M. I. Gekhtman}, Ukr. Math. J. 42, No. 6, 645--658 (1990; Zbl 0736.34070); translation from Ukr. Mat. Zh. 42, No. 6, 730--747 (1990) Full Text: DOI
Tkachenko, V. I. Splitting and the spectrum of a linear differential equation with quasiperiodic coefficients. (English. Russian original) Zbl 0723.34072 Ukr. Math. J. 42, No. 10, 1228-1233 (1990); translation from Ukr. Mat. Zh. 42, No. 10, 1383-1388 (1990). MSC: 34L05 34L40 34A30 34D05 PDFBibTeX XMLCite \textit{V. I. Tkachenko}, Ukr. Math. J. 42, No. 10, 1228--1233 (1990; Zbl 0723.34072); translation from Ukr. Mat. Zh. 42, No. 10, 1383--1388 (1990) Full Text: DOI
Cheremnykh, E. V. Spectral decomposition of a perturbed differential operator. (English. Russian original) Zbl 0715.34134 Ukr. Math. J. 41, No. 8, 964-969 (1989); translation from Ukr. Mat. Zh. 41, No. 8, 1118-1123 (1989). MSC: 34L05 47E05 34L10 PDFBibTeX XMLCite \textit{E. V. Cheremnykh}, Ukr. Math. J. 41, No. 8, 964--969 (1989; Zbl 0715.34134); translation from Ukr. Mat. Zh. 41, No. 8, 1118--1123 (1989) Full Text: DOI
Pokornyj, Yu. V.; Shurupova, I. Yu. 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 PDFBibTeX XMLCite \textit{Yu. V. Pokornyj} and \textit{I. Yu. Shurupova}, Ukr. Math. J. 41, No. 11, 1309--1314 (1989; Zbl 0702.34029); translation from Ukr. Mat. Zh. 41, No. 11, 1521--1526 (1989) Full Text: DOI
Gorbachuk, V. I.; Gorbachuk, M. L. Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients. (English) Zbl 0227.47039 Ukr. Math. J. 23(1971), 1-11 (1972). MSC: 47E05 47F05 34L05 PDFBibTeX XMLCite \textit{V. I. Gorbachuk} and \textit{M. L. Gorbachuk}, Ukr. Math. J. 23, 1--11 (1972; Zbl 0227.47039) Full Text: DOI