2019
Том 71
№ 5

# Volume 21, № 2, 1969

Article (Ukrainian)

### The principal achievements in mathematics in the Academy of Sciences of the Ukrainian SSR during half a century

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 147–164

Article (Russian)

### The development of computational mathematics and mathematical modelling at the Institute of Mathematics of the Academy of Sciences of the Ukrainian SSR

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 165–172

Article (Russian)

### Investigations in the theory of the approximation of analytic functions carried out at the Mathematics Institute, Academy of Sciences of the Ukrainian SSR

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 173–192

Article (Russian)

### Investigation of groups with given properties of the subgroups

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 193–209

Article (Russian)

### On the normal form of operators

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 210–219

Article (Russian)

### Use of power series in solving linear and nonlinear ordinary differential equations and systems thereof

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 230–237

Brief Communications (Russian)

### The Riemann-Hilbert boundary-value problem for holomorphic functions of several complex variables

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 238–246

Brief Communications (Russian)

### On the asymptotic solution of a nonlinear second-order differential equation with slowly varying parameters in the presence of a large resistance

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 246–252

Brief Communications (Russian)

### A two-sided iterative method for the solution of a boundary value problem for nonlinear systems of differential equations of parabolic and hyperbolic types

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 252–260

Brief Communications (Russian)

### On $K$-transforms

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 260–265

Brief Communications (Russian)

### The periodic solution of a linear inhomogeneous differential equation

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 265–267

Brief Communications (Russian)

### A theorem on homeomorphisms for an elliptic differential expression and pseudodifferential boundary conditions

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 268–273

Brief Communications (Russian)

### Equivalence of some statements of the inverse problem for the Schrödinger equation

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 273–275

Brief Communications (Russian)

### Introduction of a class of $p$-indecomposable positive operators in Banach space

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 275–278

Brief Communications (Russian)

### Principal primary ideals of the ring of functions which are regular in a circle and differentiable on its boundary

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 278–280

Chronicles (Russian)

### The work of the Sixth Mathematical School

Ukr. Mat. Zh. - 1969. - 21, № 2. - pp. 281