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Перегляд Український математичний вісник за назвою

Репозиторій DSpace/Manakin

Перегляд Український математичний вісник за назвою

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  • Automorphisms of semigroups of k-linked upfamilies 
    Gavrylkiv, V.M. (Український математичний вісник, 2017)
    In the paper, we study automorphisms of the extensions of groups, finite monogenic semigroups and describe the automorphism groups of extensions of null semigroups, almost null semigroups, right zero semigroups and left ...
  • Balleans of topological groups 
    Hernández, S.; Protasov, I.V. (Український математичний вісник, 2011)
    A subset S of a topological group G is called bounded if, for every neighborhood U of the identity of G, there exists a finite subset F such that S ⊆ FU, S ⊆ UF. The family of all bounded subsets of G determines two ...
  • Bernstein-Walsh type inequalities in unbounded regions with piecewise asymptotically conformal curve in the weighted Lebesgue space 
    Imashkyzy, M.; Abdullayev, G.A.; Abdullayev, F.G. (Український математичний вісник, 2017)
    In this work, we obtain pointwise Bernstein–Walsh-type estimation for algebraic polynomials in the unbounded regions with piecewise asymptotically conformal boundary, having exterior and interior zero angles, in the weighted ...
  • Blow-up phenomena arising in a reaction-absorption-diffusion equation with gradient diffusivity 
    Chaves, M. (Український математичний вісник, 2004)
    We study the blow-up phenomena arising in a p-laplacian equation with reaction and absorption terms. We show that there exists a unique blowing-up approximate self-similar solution which describe the asymptotic singular ...
  • Boundary triples for integral systems on finite intervals 
    Strelnikov, D. (Український математичний вісник, 2017)
  • Bounded Components of Positive Solutions of Nonlinear Abstract Equations 
    Cano-Casanova, S.; Lopez-Gomez, J.; Molina-Meyer, M. (Український математичний вісник, 2005)
    In this work a general class of nonlinear abstract equations satisfying a generalized strong maximum principle is considered in order to show that any bounded component of positive solutions bifurcating from the curve of ...
  • Coarse rays 
    Kuchaiev, O.; Protasov, I.V. (Український математичний вісник, 2008)
    We give some characterizations of geodesic metric spaces coarsely equivalent to the ray R⁺.
  • Completion and extension of operators in Krein spaces 
    Baidiuk, D. (Український математичний вісник, 2016)
    A generalization of the well-known results of M.G. Kreiın on the description of the self-adjoint contractive extension of a Hermitian contraction is obtained. This generalization concerns the situation where the self-adjoint ...
  • Constructing balleans 
    Banakh, T.; Protasov, I. (Український математичний вісник, 2018)
    A ballean is a set endowed with a coarse structure.We introduce and explore three constructions of balleans from a pregiven family of balleans: bornological products, bouquets, and combs. We analyze also the smallest and ...
  • Convolution equations and mean value theorems for solutions of linear elliptic equations with constant coefficients in the complex plane 
    Trofymenko, O.D. (Український математичний вісник, 2017)
    In terms of the Bessel functions we characterize smooth solutions of some convolution equations in the complex plane and prove a two-radius theorem for solutions of homogeneous linear elliptic equations with constant ...
  • Differential operator rings over 2-primal rings 
    Bhat, V.K. (Український математичний вісник, 2008)
    Let R be a ring, and δ be a derivation of R. It is proved that R is a 2-primal Noetherian Q-algebra implies that the differential operator ring R[x, δ] is a 2-primal Noetherian.
  • Discontinuous Birkhoff theorem 
    Petrenko, O.; Protasov, I.V. (Український математичний вісник, 2007)
    A topological space X is called totally recurrent if every mapping f : X → X has a recurrent point. We prove that a Hausdorff space X is totally recurrent if and only if X is either finite or a one-point compactification ...
  • Entropy of the Shift on II₁-representations of the Group S(∞) 
    Boyko, M.S.; Nessonov, N.I. (Український математичний вісник, 2005)
    We have obtained the explicit formulae for the CNT-entropy of the shift on II₁-representations of the infinite symmetric group S(∞) in terms of Thoma-parameters.
  • Estimates of the inner radii of non-overlapping domains 
    Denega, I. (Український математичний вісник, 2019)
    The paper is devoted to extremal problems of the geometric function theory of complex variable related with estimates of functionals defined on systems of non-overlapping domains. Till now, many such problems have not been ...
  • Expansions of solutions to the equation P₁² by algorithms of power geometry 
    Bruno, A.D.; Kudryashov, N.A. (Український математичний вісник, 2009)
    Algorithms of Power Geometry allow to find all power expansions of solutions to ordinary differential equations of a rather general type. Among these, there are Painlev´e equations and their generalizations. In the article ...
  • Extremal decomposition of multidimensional complex space for five domains 
    Zabolotni, i Y.; Denega, I. (Український математичний вісник, 2018)
    The paper is devoted to one open extremal problem in the geometric function theory of complex variables associated with estimates of a functional defined on the systems of non-overlapping domains. We consider the problem ...
  • Extremal quasiconformality vs bounded rational approximation 
    Krushkal, S.L. (Український математичний вісник, 2019)
    We show that, on most of the hyperbolic simply connected domains, the weighty bounded rational approximation in a natural sup norm is possible only for a very sparse set of holomorphic functions (in contrast to the integral ...
  • Factorization of generalized γ-generating matrices 
    Sukhorukova, O. (Український математичний вісник, 2017)
    The class of γ–generating matrices and its subclasses of regular and singular γ–generating matrices were introduced by D. Z. Arov in [8], where it was shown that every γ-generating matrix admits an essentially unique ...
  • Finite spaces pretangent to metric spaces at infinity 
    Bilet V., V.; Dovgoshey O., O. (Український математичний вісник, 2018)
  • Fundamental solutions of boundary problems and resolvents of differential operators 
    Mogilevskii, V. (Український математичний вісник, 2009)
    The main objects of our considerations are differential operators generated by a formally selfadjoint differential expression of an even order. The coefficients of this expression are operator valued functions defined on ...

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