Vol. 73 No. 4 (2021)

Research articles

• Bernstein – Nikolskii-type inequalities for algebraic polynomials in the Bergman space in regions of the complex plane

  F. G. Аbdullayev, C. D. Gün

  439 - 454

  • pdf (Ukrainian)

• Characterizations of additive $\xi$-Lie derivations on unital algebras

  M. Ashraf, A. Jabeen

  455 - 466

  • pdf

• Density and capacity of balleans generated by filters

  A. Brzeska

  467 - 473

  • pdf

• Monogenic functions with values in сommutative сomplex algebras of the second rank with unit and generalized biharmonic equation with simple nonzero simple characteristics

  S. V. Gryshchuk

  474 -487

  • pdf (Ukrainian)

• On the asymptotic of solutions of the second-order differential equations with rapidly varying nonlinearities

  V. M. Evtukhov , A. G. Chernikova

  488 - 505

  • pdf (Ukrainian)

• On correlation between sharp Kolmogorov type inequalities and sharp Kolmogorov–Remez type inequalities

  V. A. Kofanov

  506 - 514

  • pdf (Ukrainian)

• Picone’s identity for $\Delta_{\gamma}$-Laplace operator and its applications

  D. T. Luyen

  515 - 522

  • pdf

• On the dynamics of the impulsive predator-prey systems with Beddington – DeAngelis type functional response

  N. N. Pelen

  523 - 543

  • pdf

• Some new resuts concering strong convergence of Fejér means with respect to Vilenkin systems

  L.-E. Persson, G. Tephnadze, G. Tutberidze, P. Wall

  544 - 555

  • pdf

• Criteria for the existence of systems of subspaces related to a certain class of unicyclic graphs

  N. D. Popova, O. V. Strilets

  556 - 565

  • pdf (Ukrainian)

• Derivations on the module extension Banach algebras

  A. Teymouri , A. Bodaghi , D. Ebrahimi Bagha

  566 - 576

  • pdf