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Vol. 71 No. 8 (2019)

Published: 25.08.2019

Research articles

Isometry of the subspacesof solutions of systems of differential equations to the spaces of real functions

M. Imash kyzy, F. G. Abdullayev, D. M. Bushev, Yu. I. Kharkevych

1011-1027
- PDF (Ukrainian)
Deformations in the general position of the optimal functions on oriented surfaces with boundary

B. I. Hladysh, O. O. Prishlyak

1028-1039
- PDF (Ukrainian)
Application of the infinite matrix theory to the solvability of sequence spaces inclusion equations with operators

Malafosse B. de

1040-1052
- PDF
On the stability of a program manifold of control systems with variable coefficients

S. S. Zhumatov

1053-1063
- PDF (Russian)
Existence of nonnegative solutions for a fractional parabolic equation in the whole space

T. Kenzizi

1064-1072
- PDF
On the Lebesgue constants

A. K. Kushpel

1073-1081
- PDF (Russian)
The $\Box_b$ -heat equation on finite type CR manifolds with comparable Levi form

Kim Ha Ly

1082-1101
- PDF
Estimates of some approximating characteristics of the classes of periodic functions of one and many variables

A. S. Romanyuk, V. S. Romanyuk

1102-1115
- PDF (Ukrainian)
On the dynamics of a quasistrictly non-Volterra quadratic stochastic operator

A. Yu. Khamrayev

1116-1122
- PDF (Russian)
On the existence, uniqueness, and nonexistence of solutions of one boundary-value problem for a semilinear hyperbolic equation

B. Midodashvili, S. Kharibegashvili

1123-1132
- PDF (Russian)

Short communications

On the Merkulov construction of $A_{ \infty}$ -(co)algebras

E. Herscovich

1133-1140
- PDF
On the correct definition of the flow of a discontinuous solenoidal vector field

A. I. Noarov

1141-1149
- PDF (Russian)
On the maximal unipotent subgroups of a special linear group over commutative ring

A. A. Tylyshchak

1150-1156
- PDF (Ukrainian)