Fedorenko, A. S. On the best \(m\)-term trigonometric and orthogonal trigonometric approximations of functions from the classes \(L_{\beta,p}^{\psi}\). (English. Ukrainian original) Zbl 0954.42002 Ukr. Math. J. 51, No. 12, 1945-1949 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1719-1721 (1999). MSC: 42A10 PDFBibTeX XMLCite \textit{A. S. Fedorenko}, Ukr. Mat. Zh. 51, No. 12, 1719--1721 (1999; Zbl 0954.42002); translation from Ukr. Mat. Zh. 51, No. 12, 1719--1721 (1999) Full Text: DOI
Mel’nyk, V. L. Investigation of smoothness conditions on the strong linear convexity of a domain. (English. Ukrainian original) Zbl 0958.32009 Ukr. Math. J. 51, No. 12, 1935-1938 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1710-1713 (1999). MSC: 32F17 PDFBibTeX XMLCite \textit{V. L. Mel'nyk}, Ukr. Mat. Zh. 51, No. 12, 1710--1713 (1999; Zbl 0958.32009); translation from Ukr. Mat. Zh. 51, No. 12, 1710--1713 (1999) Full Text: DOI
Stepanets, A. I. Rate of convergence of a group of deviations on sets of \(\overline{\Psi}\)-integrals. (English. Russian original) Zbl 0957.42002 Ukr. Math. J. 51, No. 12, 1892-1916 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1673-1693 (1999). MSC: 42A10 41A50 PDFBibTeX XMLCite \textit{A. I. Stepanets}, Ukr. Mat. Zh. 51, No. 12, 1673--1693 (1999; Zbl 0957.42002); translation from Ukr. Mat. Zh. 51, No. 12, 1673--1693 (1999) Full Text: DOI
Ligun, A. A.; Shumeiko, A. A. On lower bounds for approximation of individual functions by local splines with nonfixed nodes. (English. Russian original) Zbl 0964.41005 Ukr. Math. J. 51, No. 12, 1839-1949 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1628-1637 (1999). MSC: 41A15 41A63 PDFBibTeX XMLCite \textit{A. A. Ligun} and \textit{A. A. Shumeiko}, Ukr. Mat. Zh. 51, No. 12, 1628--1637 (1999; Zbl 0964.41005); translation from Ukr. Mat. Zh. 51, No. 12, 1628--1637 (1999) Full Text: DOI
Kuzennij, M. F.; Maznichenko, S. V. Structure of certain classes of groups with locally cyclic Abelian subgroups. (English. Ukrainian original) Zbl 0955.20019 Ukr. Math. J. 51, No. 12, 1824-1838 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1614-1627 (1999). MSC: 20E34 20F16 20E07 20E15 20E25 PDFBibTeX XMLCite \textit{M. F. Kuzennij} and \textit{S. V. Maznichenko}, Ukr. Mat. Zh. 51, No. 12, 1614--1627 (1999; Zbl 0955.20019); translation from Ukr. Mat. Zh. 51, No. 12, 1614--1627 (1999) Full Text: DOI
Malyshev, K. I. Direct methods for the approximate solution of systems of singular integral equations in the case of nonnegative partial indices. (English. Russian original) Zbl 0956.65120 Ukr. Math. J. 51, No. 12, 1850-1857 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1638-1644 (1999). Reviewer: Valerie Samoilenko (Kyïv) MSC: 65R20 45F15 PDFBibTeX XMLCite \textit{K. I. Malyshev}, Ukr. Mat. Zh. 51, No. 12, 1638--1644 (1999; Zbl 0956.65120); translation from Ukr. Mat. Zh. 51, No. 12, 1638--1644 (1999) Full Text: DOI
Klyus, I. S.; Ptashnyk, B. I. A multipoint problem for partial differential equations unsolved with respect to the higher time derivative. (English. Ukrainian original) Zbl 0951.35031 Ukr. Math. J. 51, No. 12, 1813-1823 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1604-1613 (1999). Reviewer: Valerie Samoilenko (Kyïv) MSC: 35G05 35G15 35J30 35C05 35C10 35E20 PDFBibTeX XMLCite \textit{I. S. Klyus} and \textit{B. I. Ptashnyk}, Ukr. Mat. Zh. 51, No. 12, 1604--1613 (1999; Zbl 0951.35031); translation from Ukr. Mat. Zh. 51, No. 12, 1604--1613 (1999) Full Text: DOI
Bondarenko, V. G. Finite-dimensional approximations of diffusion measures in a Hilbert space. (English. Russian original) Zbl 0957.60089 Ukr. Math. J. 51, No. 12, 1791-1798 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1587-1592 (1999). Reviewer: Valerie Samoilenko (Kyïv) MSC: 60J60 60A10 60B10 58J65 60H20 PDFBibTeX XMLCite \textit{V. G. Bondarenko}, Ukr. Mat. Zh. 51, No. 12, 1587--1592 (1999; Zbl 0957.60089); translation from Ukr. Mat. Zh. 51, No. 12, 1587--1592 (1999) Full Text: DOI
Skrypnyk, T. V. Coadjoint orbits of compact Lie groups and generalized stereographic projection. (English. Ukrainian original) Zbl 0933.22020 Ukr. Math. J. 51, No. 12, 1939-1944 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1714-1718 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 22E46 53C30 37J05 PDFBibTeX XMLCite \textit{T. V. Skrypnyk}, Ukr. Mat. Zh. 51, No. 12, 1714--1718 (1999; Zbl 0933.22020); translation from Ukr. Mat. Zh. 51, No. 12, 1714--1718 (1999) Full Text: DOI
Dobrynskij, V. A. On the structure of the set nonwandering points of a pair of coupled quadratic maps. (English. Russian original) Zbl 0934.37005 Ukr. Math. J. 51, No. 12, 1929-1934 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1704-1709 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 37A25 37C25 PDFBibTeX XMLCite \textit{V. A. Dobrynskij}, Ukr. Mat. Zh. 51, No. 12, 1704--1709 (1999; Zbl 0934.37005); translation from Ukr. Mat. Zh. 51, No. 12, 1704--1709 (1999) Full Text: DOI
Shkil’, N. I.; Zavizion, G. V. Systems of singularly perturbed degenerate integro-differential equations. (English. Russian original) Zbl 0948.34032 Ukr. Math. J. 51, No. 12, 1917-1928 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1694-1703 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 34E15 45J05 PDFBibTeX XMLCite \textit{N. I. Shkil'} and \textit{G. V. Zavizion}, Ukr. Mat. Zh. 51, No. 12, 1694--1703 (1999; Zbl 0948.34032); translation from Ukr. Mat. Zh. 51, No. 12, 1694--1703 (1999) Full Text: DOI
Slyusarchuk, V. E. Essentially unstable solutions of difference equations. (English. Russian original) Zbl 0937.39008 Ukr. Math. J. 51, No. 12, 1875-1891 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1659-1672 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 39A11 39A70 PDFBibTeX XMLCite \textit{V. E. Slyusarchuk}, Ukr. Mat. Zh. 51, No. 12, 1659--1672 (1999; Zbl 0937.39008); translation from Ukr. Mat. Zh. 51, No. 12, 1659--1672 (1999) Full Text: DOI
Matvijchuk, K. S. Technical stability of autonomous control systems with variable structure. (English. Ukrainian original) Zbl 0933.93024 Ukr. Math. J. 51, No. 12, 1858-1874 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1645-1658 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 93B12 93D30 93D20 PDFBibTeX XMLCite \textit{K. S. Matvijchuk}, Ukr. Mat. Zh. 51, No. 12, 1645--1658 (1999; Zbl 0933.93024); translation from Ukr. Mat. Zh. 51, No. 12, 1645--1658 (1999) Full Text: DOI
Vitrichenko, I. E. A critical case of stability of one quasilinear difference equation of the second order. (English. Russian original) Zbl 0937.39007 Ukr. Math. J. 51, No. 12, 1799-1812 (1999); translation from Ukr. Mat. Zh. 51, No. 12, 1593-1603 (1999). Reviewer: I.O.Parasyuk (Kyïv) MSC: 39A11 PDFBibTeX XMLCite \textit{I. E. Vitrichenko}, Ukr. Mat. Zh. 51, No. 12, 1593--1603 (1999; Zbl 0937.39007); translation from Ukr. Mat. Zh. 51, No. 12, 1593--1603 (1999) Full Text: DOI