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Vol. 73 No. 1 (2021)

Published: 22.01.2021

Research articles

Estimates of the products of inner radii for multiconnected domains

A. K. Bakhtin , Ya. V. Zabolotnii

9 - 22
- pdf (Ukrainian)
Improved Young and Heinz operator inequalities with Kantorovich constant

A. Beiranvand, A. G. Ghazanfari

23 - 32
- PDF
Classes of harmonic functions defined by extended Sălăgean operator

J. Dziok

33 - 46
- PDF
Inverse spectral problem for a star graph of Stieltjes strings with prescribed numbers of masses on the edges

V. Pivovarchik, A. Dudko

47 - 60
- PDF (Ukrainian)
Some generalisation of the shadow problem in the Lobachevsky space

A. V. Kostin

61 - 68
- PDF (Ukrainian)
Holtsmark fluctuations of non-stationary gravitational fields

V. A. Litovchenko

69 - 76
- PDF (Ukrainian)
On a bivariate kind of $q$ -Euler and $q$ -Genocchi polynomials

M. Masjed-Jamei, M. R. Beyki

77 - 88
- PDF (Ukrainian)
Inequalities of the Edmundson-Lah-Ribarč type for n-convex functions with applications

R. Mikić , D. Pečarić, J. Pečarić

89 - 106
- pdf
On groups with formational subnormal strictly 2-maximal subgroups

V. S. Monakhov, M. N. Konovalova

107 - 116
- pdf (Ukrainian)
Accurate approximated solution to the differential inclusion based on the ordinary differential equation

T. H. Nguyen

117 - 127
- pdf
$H^2$ - norms of the partial sums of Fourier series by Laguerre basis for bounded holomorphic functions

V. V. Savchuk

128 - 137
- pdf (Ukrainian)
A remark on covering of compact Kähler manifolds and applications

V. V. Hung, H. N. Quy

138 - 148
- pdf

Obituaries

Academician Anatolii Mykhailovych Samoilenko (02.01.1938 – 04.12.2020)

I. O. Lukovs’kyi, V. L. Makarov , M. O. Perestyuk , O. A. Boichuk , I. O. Parasyuk , O. V. Antoniouk , V. I. Tkachenko, R. I. Petryshyn , M. V. Prats’ovytyi , O. M. Stanzhyts’kyi , M. Ronto

3-8
- PDF (Ukrainian)