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Перегляд Український математичний журнал, 2002, том 54 за назвою

Репозиторій DSpace/Manakin

Перегляд Український математичний журнал, 2002, том 54 за назвою

Сортувати за: Порядок: Результатів:

  • Elementary Representations of the Group B₀Z of Upper-Triangular Matrices Infinite in Both Directions. I 
    Kosyak, O.V. (Український математичний журнал, 2002)
    We define so-called “elementary representations of the group B₀Z of finite upper-triangular matrices infinite in both directions by using quasi-invariant measures on certain homogeneous spaces and give a criterion for the ...
  • Finitary and Artinian-Finitary Groups over the Integers ℤ 
    Wehrfritz, B.A.F. (Український математичний журнал, 2002)
    In a series of papers, we have considered finitary (that is, Noetherian-finitary) and Artinian-finitary groups of automorphisms of arbitrary modules over arbitrary rings. The structural conclusions for these two classes ...
  • Generalized Moment Representations and Padé Approximants Associated with Bilinear Transformations 
    Golub, A.P. (Український математичний журнал, 2002)
    By using the method of generalized moment representations with an operator of bilinear transformation of an independent variable, we construct elements of the first subdiagonal of the Padé table for certain special power series.
  • Groups with Bounded Chernikov Conjugate Classes of Elements 
    Kurdachenko, L.A.; Otal, J.; Subbotin, I.Ya. (Український математичний журнал, 2002)
    We consider BCC-groups, that is groups G with Chernikov conjugacy classes in which for every element x ∈ G the minimax rank of the divisible part of the Chernikov group G/C G(xᴳ) and the order of the corresponding factor-group ...
  • Groups with Various Minimal Conditions on Subgroups 
    Dixon, M.R.; Evans, M.J.; Smith, H. (Український математичний журнал, 2002)
    We briefly review some recent works on groups with the weak minimal condition on nonnilpotent subgroups. We also study the class of groups with the weak minimal condition on non-(soluble of derived length d) subgroups.
  • I-Radicals, Their Lattices, and Some Classes of Rings 
    Horbachuk, O.L.; Martin, Yu.P. (Український математичний журнал, 2002)
    We describe some I-radicals in the categories of modules over semilocal rings. We give a characterization of rings over which the set of I-radicals coincides with the set of hereditary idempotent radicals. We prove that ...
  • Malliavin Calculus for Functionals with Generalized Derivatives and Some Applications to Stable Processes 
    Kulik, O.M. (Український математичний журнал, 2002)
    We introduce the notion of a generalized derivative of a functional on a probability space with respect to some formal differentiation. We establish a sufficient condition for the existence of the distribution density of ...
  • Minimality and Sylow-Permutability in Locally Finite Groups 
    Robinson, D.J.S. (Український математичний журнал, 2002)
    We give a complete classification of the locally finite groups that are minimal with respect to Sylow-permutability being intransitive.
  • Morphisms of Ball's Structures of Groups and Graphs 
    Protasov, I.V. (Український математичний журнал, 2002)
    We introduce and study two kinds of morphisms between ball's structures related to groups and graphs.
  • Note on Symmetric Words in Metabelian Groups 
    Holubowski, W. (Український математичний журнал, 2002)
    We completely describe n-symmetric words in a free metabelian group.
  • On 2-Symmetric Words in Nilpotent Groups 
    Gupta, C.K.; Holubowski, W. (Український математичний журнал, 2002)
    We find the nilpotency class of a group of 2-symmetric words for free nilpotent groups, free nilpotent metabelian groups, and free (nilpotent of class c)-by-Abelian groups.
  • On Placement of Prime Order Elements in a Group 
    Shunkov, V.P. (Український математичний журнал, 2002)
    We characterize a class of T₀-groups related to the infinite Burnside groups of odd period.
  • On the Convergence of Fourier Series with Orthogonal Polynomials inside and on the Closure of a Region 
    Abdullaev, F.G.; Küçükaslan, M. (Український математичний журнал, 2002)
    We study the rate of convergence of Fourier series of orthogonal polynomials over an area inside and on the closure of regions of the complex plane.
  • On the Sign of Solutions of Systems of Ordinary Differential Equations 
    Kalinowski, J. (Український математичний журнал, 2002)
    We show that Theorems 1 and 3 in A. G. Gritsai's paper “Monotonicity properties of solutions of systems of nonlinear differential equations” published in the collection of works Approximate and Qualitative Methods in the ...
  • On the Spatial and Temporal Behavior in Dynamics of Porous Elastic Mixtures 
    Ciarletta, M.; Iovane, G.; Passarella, F. (Український математичний журнал, 2002)
    In this paper, we study the spatial and temporal behavior of dynamic processes in porous elastic mixtures. For the spatial behavior, we use the time-weighted surface power function method in order to obtain a more precise ...
  • On the Stability of Semilinear Nonautonomous Evolution Equations in Banach Spaces and Its Application to Strongly Parabolic Equations 
    Tran Thi Loan; Nguyen Manh Hung (Український математичний журнал, 2002)
    The paper is concerned with the exponential stability of the zero solution of strongly nonautonomous parabolic equations. Conditions are found on time-dependent coefficients of a parabolic equation under which its solutions ...
  • Properties of a Subclass of Avakumović Functions and Their Generalized Inverses 
    Buldygin, V.V.; Klesov, O.I.; Steinebach, J.G. (Український математичний журнал, 2002)
    We study properties of a subclass of ORV functions introduced by Avakumović and provide their applications for the strong law of large numbers for renewal processes.
  • P- точные частично упорядоченные множества 
    Сапелкин, А.И. (Український математичний журнал, 2002)
    Доведено теорему, що описує P-точні впорядковані множини.
  • Quasi-Frobenius Rings and Nakayama Permutations of Semiperfect Rings 
    Dokuchaev, M.A.; Kirichenko, V.V. (Український математичний журнал, 2002)
    We say that A is a ring with duality for simple modules, or simply a DSM-ring, if, for every simple right (left) A-module U, the dual module U* is a simple left (right) A-module. We prove that a semiperfect ring is a ...
  • Sections of Angles and n-th Roots of Numbers 
    Heineken, H. (Український математичний журнал, 2002)
    It is known since Galois that an algebraic equation can be solved using suitable n-th roots whenever the corresponding Galois group is soluble. The object of this note is to construct real numbers with the use of the n-th ...

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