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Vol. 72 No. 3 (2020)

Published: 07.04.2020

Research articles

Classifications of translation surfaces in isotropic geometry with constant curvature

M. E. Aydin

291-306
- pdf
The Birman–Hilden property of covering spaces of nonorientable surfaces

F. Atalan, E. Medetogullari

307-315
- pdf
Boundedness of $l$ -index and completely regular growth of entire functions

A. I. Bandura, O. B. Skaskiv

316-325
- pdf (Ukrainian)
Оn the soluble radical of the finite groups

S. Yu. Bashun, E. M. Palchik

326-339
- pdf (Russian)
Linear Noetherian boundary-value problem for a matrix difference equation

S. M. Chuiko, Ya. V. Kalinichenko , A. A. Boichuk

340-354
- pdf (Russian)
M/M/1 retrial queueing model with variable service rate

M. S. Bratiichuk, A. A. Chechelnitsky , I. Ya. Usar

355-365
- pdf (Ukrainian)
The derived $p$ -length of a $p$ -solvable group with bounded indices of Fitting $p$ -subgroups in its normal closures

A. A. Trofimuk, D. V. Gritsuk

366-370
- pdf (Russian)
Remarks on number theory over additive arithmetical semigroups

K.-H. Indlekofer, E. Kaya

371-390
- pdf
On the approximation properties of Cesàro means of negative order of double Vilenkin – Fourier series

T. Tepnadze

391-406
- pdf
On some Hermite–Hadamard inequalities for fractional integrals and their applications

S.-R. Hwang, S.-Y. Yeh, K.-L. Tseng

407-424
- pdf

Short communications

A note on the removability of totally disconnected sets for analytic functions

A. V. Pokrovskii

425-426
- pdf
Some characterizations of three-dimensional trans-Sasakian manifolds admitting η- Ricci solitons and trans-Sasakian manifolds as Kagan subprojective space

A. Sarkar, A. Sil, A. K. Paul

427-432
- pdf