Convergence of Cesàro means of negative order of functions of bounded generalized second variation T. I. Akhobadze OriginalPaper Pages: 914 - 922
Best approximation by splines on classes of periodic functions in the metric of L N. P. Korneichuk OriginalPaper Pages: 927 - 933
Tests for the convergence of continued fractions, based on the fundamental system of inequalities S. S. Khloponin OriginalPaper Pages: 933 - 938
Perturbations of the Schrödinger equation by potentials with small support I. D. Chueshov OriginalPaper Pages: 938 - 941
Conditions for the embedding of classes of sequences and their consequences I. V. Shragin OriginalPaper Pages: 942 - 948
Approximation of a linear system of second-order differential equations Yu. Ya. Belov OriginalPaper Pages: 948 - 953
Self-conjugacy of abstract differential operators of the hyperbolic type L. I. Vainerman OriginalPaper Pages: 954 - 957
Conditions for the self-adjointness of a quasi-elliptic operator M. G. Gimadislamov OriginalPaper Pages: 957 - 961
Regularity of boundary points for linear equations of parabolic type I. T. Mamedov OriginalPaper Pages: 961 - 965
Coercive estimates for a class of differential operators B. P. Paneyakh OriginalPaper Pages: 965 - 969
Extension of linear functionals in Banach spaces of measurable functions M. S. BravermanG. Ya. Lozanovskii OriginalPaper Pages: 969 - 973
A certain approach to the problem of regularization on the basis of the perturbation of linear operators N. A. SidorovV. A. Trenogin OriginalPaper Pages: 976 - 979
Inversion of the oscillatory property of focusing operators Yu. V. PokornyiS. V. Smitskikh OriginalPaper Pages: 980 - 984
Contractibility of the diagonal of the product of a hyperelliptic curve with itself B. V. Martynov OriginalPaper Pages: 989 - 991
Approximation of a class of functions of several variables by certain polynomial operators L. I. BausovI. M. Petrov Report Pages: 992 - 995
Exact constants in some converse theorems for approximations by trigonometric polynomials A. F. TimanV. N. Trofimov Report Pages: 999 - 1002