Vol. 12 No. 1 (2020)

Scientific articles

• Symmetric functions on spaces $\ell_p(\mathbb{{R}}^n)$ and $\ell_p(\mathbb{{C}}^n)$

  T.V. Vasylyshyn

  5-16

  • Article
• Analogues of the Newton formulas for the block-symmetric polynomials on $\ell_p(\mathbb{C}^s)$

  V.V. Kravtsiv

  17-22

  • Article
• Nonlocal inverse boundary-value problem for a 2D parabolic equation with integral overdetermination condition

  E.I. Azizbayov, Y.T. Mehraliyev

  23-33

  • Article
• Mersenne-Horadam identities using generating functions

  R. Frontczak, T.P. Goy

  34-45

  • Article
• Sufficient conditions for the improved regular growth of entire functions in terms of their averaging

  R.V. Khats'

  46-54

  • Article
• Zero product preserving bilinear operators acting in sequence spaces

  E. Erdoğan

  55-68

  • Article
• Legendrian normally flat submanifols of $\mathcal{S}$-space forms

  F. Mahi, M. Belkhelfa

  69-78

  • Article
• Construction of the fundamental solution of a class of degenerate parabolic equations of high order

  H.P. Malytska, I.V. Burtnyak

  79-87

  • Article
• Isomorphic spectrum and isomorphic length of a Banach space

  O. Fotiy, M. Ostrovskii, M. Popov

  88-93

  • Article
• Related fixed point results via $\mathit{C_{*}}$-class functions on $C^{*}$-algebra-valued $G_{b}$-metric spaces

  B. Moeini, H. Işik, H. Aydi

  94-106

  • Article
• A note on approximation of continuous functions on normed spaces

  M.A. Mytrofanov, A.V. Ravsky

  107-110

  • Article
• On the estimation of functions belonging to Lipschitz class by block pulse functions and hybrid Legendre polynomials

  S. Lal, V.K. Sharma

  111-128

  • Article
• Some properties of generalized hypergeometric Appell polynomials

  L. Bedratyuk, N. Luno

  129-137

  • Article
• Asymptotics of approximation of functions by conjugate Poisson integrals

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

  138-147

  • Article
• Approximation of the Nikol'skii-Besov functional classes by entire functions of a special form

  S.Ya. Yanchenko

  148-156

  • Article
• On convergence criteria for branched continued fraction

  T.M. Antonova

  157-164

  • Article
• Bounded solutions of a difference equation with finite number of jumps of operator coefficient

  A. Chaikovs'kyi, O. Lagoda

  165-172

  • Article
• The nonlocal boundary value problem with perturbations of mixed boundary conditions for an elliptic equation with constant coefficients. II

  Ya.O. Baranetskij, P.I. Kalenyuk, M.I. Kopach, A.V. Solomko

  173-188

  • Article
• Nilpotent Lie algebras of derivations with the center of small corank

  Y.Y. Chapovskyi, L.Z. Mashchenko, A.P. Petravchuk

  189-198

  • Article
• Local nearrings on finite non-abelian $2$-generated $p$-groups

  I.Yu. Raievska, M.Yu. Raievska

  199-207

  • Article
• Certain results for a class of nonlinear functional spaces

  K. Soltanov, U. Sert

  208-228

  • Article
• On two long standing open problems on $L_p$-spaces

  M.M. Popov

  229-241

  • Article
• The generalized centrally extended Lie algebraic structures and related integrable heavenly type equations

  O.Ye. Hentosh, A.A. Balinsky, A.K. Prykarpatski

  242-264

  • Article