Includes bibliographical references.

The present status of the theory of dimension /; On an application of the fixed-point principle in the theory of linear transformations of spaces with an indefinite metric /; On the decomposition of a commutative normed ring into a direct sum of ideals /; Geodesic flows on manifolds of constant negative curvature /; Prime ends of a sequence of plane regions converging to a nucleus /; On the zeros of some transcendental functions /; On the theory of differential equations of random processes. I, II /; On certain problems on the maximum and minimum of characteristic values and on the Lyapunov zones of stability /; Survey of works on conditions of stability of the trivial solution of a system of linear differential equations with periodic coefficients /; The behavior of the integral curves of a system of three differential equations in the neighborhood of a singular point /; On the determination of a differential equation from its spectral function / P. S. Aleksandrov; M. G. Krein; G. E. Silov; I. M. Gelfand and S. V. Fomin; G. D. Suvorov; L. S. Pontryagin; I. I. Gihman; M. G. Krein; V. M. Starzinskii; L. E. Reizin; I. M. Gelfand and B. M. Levitan