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Vol. 74 No. 4 (2022)

Published: 12.06.2022

Anniversaries

Ihor Oleksandrovych Shevchuk (on his 75th birthday)

439 - 442
- pdf (Ukrainian)

Research articles

On convergence and estimation of the truncation error of corresponding two-dimensional continued fractions

T. M. Antonova, O. M. Sus', S. M. Vozna

443 - 457
- pdf (Ukrainian)
Local properties of entire functions of bounded index in a frame

A. I. Bandura, O. B. Skaskiv

458 - 468
- pdf (Ukrainian)
$K$ -functionals and extreme problems of the theory of approximation for classes of analytic functions in the circle. I

S. B. Vakarchuk, M. B. Vakarchuk

469 - 485
- pdf (Ukrainian)
Generalized vector-valued paranormed sequence spaces defined by a sequence of Orlicz functions

A. K. Verma, S. Kumar

486 - 495
- pdf
An interpolatory estimate for copositive polynomial approximations of continuous functions

G. A. Dzyubenko

496 - 506
- pdf (Ukrainian)
Approximation of the classes $W^{r}_{\beta,\infty}$ by generalized Abel-Poisson integrals

I. V. Kal'chuk, Yu. I. Kharkevych

507 - 515
- pdf (Ukrainian)
On a property of the arithmetic means of monotonous sequences

A. O. Korenovskyi, R. V. Shanin

516 - 524
- PDF (Ukrainian)
Zariski topology over multiplication Krasner hypermodules

Ö. Kulak , B. N. Türkmen

525 - 533
- pdf
On a property of moduli of smoothness with Jacobi weights

O. N. Nesterenko, I. L. Petrova, A. V. Chaikovs'kyi

534 - 541
- pdf (Ukrainian)
Combining interpolation schemes and Lagrange interpolation on the unit sphere in $\mathbb R^{N+1}$

V. M. Phung, V. T. Nguyen, H. L. Dinh

542 - 559
- pdf
Pointwise estimation of sign-preserving polynomial approximation on arcs in the complex plane

M. V. Shchehlov

560 - 568
- pdf (Ukrainian)

Short communications

Fine-grained evaluations of the best estimates for smooth functions in $C_{2\pi}$ in terms of linear combinations of modules of continuity of their derivatives

Yu. P. Babich, T. F. Mikhailova

569 - 572
- pdf (Ukrainian)
On one Reverse asymptotic equality

O. V. Motorna, V. I. Shevchuk

572 - 576
- pdf (Ukrainian)