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Перегляд Український математичний вісник за назвою

Репозиторій DSpace/Manakin

Перегляд Український математичний вісник за назвою

Сортувати за: Порядок: Результатів:

  • Recent progress in Subset Combinatorics of Groups 
    Protasov, I.V.; Protasova, K.D. (Український математичний вісник, 2017)
    We systematize and analyze some results obtained in Subset Combinatorics of G groups after publications the previous surveys [1–4]. The main topics: the dynamical and descriptive characterizations of subsets of a group ...
  • Removability of isolated singularity for solutions of anisotropic porous medium equation with absorption term 
    Shan, M.A. (Український математичний вісник, 2016)
    The removability of an isolated singularity for solutions to the quasilinear equation is proved.
  • Removable isolated singularities for solutions of quasilinear parabolic equations 
    Nicolosi, F.; Skrypnik, I.I.; Skrypnik, I.V. (Український математичний вісник, 2009)
    We have obtained the best possible conditions for removable singularity at the point for solutions of quasilinear parabolic equations of divergent form.
  • Schwarz boundary-value problems for solutions of a generalized Cauchy-Riemann system with a singular line 
    Plaksa, S.A. (Український математичний вісник, 2019)
    We consider a generalized Cauchy–Riemann system with a rectilinear singular interval of the real axis. Schwarz boundary value problems for generalized analytic functions which satisfy the mentioned system are reduced to ...
  • Selective survey on Subset Combinatorics of Groups 
    Protasov, I.V. (Український математичний вісник, 2010)
    We survey recent results concerning the combinatorial size of subsets of groups. For a cardinal k, according to its arrangement in a group G, a subset of G is distinguished as k-large, k-small, k-thin, k-thick and Pk-small. ...
  • Semilinear parabolic equations with superlinear reaction terms, and application to some convection-diffusion problems 
    Dall'Aglio, A.; Giachett, D.; Segura de Leon, S. (Український математичний вісник, 2004)
    We are interested in the existence of distributional solutions for two types of nonlinear evolution problems, whose models are (1.1) and (1.2) below. In the first one the nonlinear reaction term depends on the solution ...
  • Shifted Darboux transformations of the generalized Jacobi matrices, I 
    Kovalyov, I.M. (Український математичний вісник, 2018)
    Let J be a monic generalized Jacobi matrix, i.e., a three-diagonal block matrix of a special form. We find conditions for a monic generalized Jacobi matrix J to admit a factorization J = LU + αI with L and U being lower ...
  • Solution of systems of partial differential equations by using properties of monogenic functions on commutative algebras 
    Kolomiiets, T.; Pogorui, A.; Rodriguez-Dagnino, R.M. (Український математичний вісник, 2018)
    Some systems of differential equations with partial derivatives are studied by using the properties of Gateaux differentiable functions on commutative algebras. The connection between solutions of systems of partial ...
  • Solutions of some partial differential equations with variable coefficients by properties of monogenic functions 
    Pogorui, A.A.; Rodriguez-Dagnino, R.M. (Український математичний вісник, 2016)
    In this paper we study some partial differential equations by using properties of Gateaux differentiable functions on commutative algebra. It is proved that components of differentiable functions satisfy some partial ...
  • Some criteria of boundedness of the L-index in direction for slice holomorphic functions of several complex variables 
    Bandura, A.; Skaskiv, O. (Український математичний вісник, 2019)
    We investigate the slice holomorphic functions of several complex variables that have a bounded L-index in some direction and are entire on every slice {z⁰ + tb : t ∈ C} for every z⁰ ∈ Cⁿ and for a given direction b ∈ Cⁿ ...
  • Some endpoint inequalities for multilinear integral operators 
    Liu, L. (Український математичний вісник, 2006)
    In this paper, the endpoint estimates for some multilinear operators related to certain fractional singular integral operators are obtained. The operators include Calder´on–Zygmund singular integral operator and fractional ...
  • Some results on fuzzy subsets in gamma-nearrings 
    Williams, D.R.Pr.; Dheena, P.; Latha, K.B.; Chandrasekeran, E. (Український математичний вісник, 2009)
    In this paper, we introduce the notions of bi-ideal, quasi-ideal and residual quotient sets in terms of fuzzy subsets and have studied their related properties. Also, we have characterized residual quotient fuzzy subsets ...
  • Spectral and pseudospectral functions of various dimensions for symmetric systems 
    Mogilevskii, V.I. (Український математичний вісник, 2016)
    The main object of the paper is a symmetric system Jy′ − B(t)y = λ∆(t)y defined on an interval I = [a, b) with the regular endpoint a.
  • Stationary statistical experiments and the optimal estimator for a predictable component 
    Koroliouk, D. (Український математичний вісник, 2015)
    A stationary autoregression process given by a difference stochastic equation is characterized by a two-dimensional covariance matrix under stationarity conditions. The optimal estimator function represented by a square ...
  • Stochastic impulsive processes on superposition of two renewal processes 
    Koroliuk, V.S.; Manca, R.; D'Amico, G. (Український математичний вісник, 2014)
    Stochastic impulsive processes given by a sum of random variables on superposition of two renewal processes are considered on increasing time intervals. Algorithms of average, diffusion approximation and large deviation ...
  • Strongly local nonlinear Dirichlet functionals 
    Biroli, M. (Український математичний вісник, 2004)
    We introduce a new notion of Markov functional and we prove that its properties allows to define a notion of capacity associated with the functional.
  • Tangent spaces to metric spaces and to their subspaces 
    Dovgoshey, O.A. (2008)
    We investigate tangent spaces and metric space valued derivatives at points of a general metric spaces. The conditions under which two different subspaces of the metric space have isometric tangent spaces in the common ...
  • The Beltrami equation and ring homeomorphisms 
    Ryazanov, V.; Srebro, U.; Yakubov, E. (Український математичний вісник, 2007)
    With the aid of results by Gehring, we introduce and study plane ring Q-homeomorphisms. This study is then applied in deriving general principles on the existence and uniqueness of homeomorphic ACL solutions to the Beltrami ...
  • The Beltrami equations and prime ends 
    Gutlyanskii, V.Y.; Ryazanov, V.I.; Yakubov, E. (Український математичний вісник, 2015)
    We first study the boundary behavior of ring Q-homeomorphisms in terms of Carath´eodory’s prime ends and then give criteria to the solvability of the Dirichlet problem for the degenerate Beltrami equation ∂f = μ∂f in ...
  • The Cauchy problem for degenerate parabolic equations with source and damping 
    Andreucci, D.; Tedeev, A.F.; Ughi, M. (Український математичний вісник, 2004)
    We prove optimal estimates for the decay of mass of solutions to the Cauchy problem for a wide class of quasilinear parabolic equations with damping terms. In the degenerate case, we also prove estimates for the finite ...

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