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Перегляд Відділення математики за темою "Короткі повідомлення"

Репозиторій DSpace/Manakin

Перегляд Відділення математики за темою "Короткі повідомлення"

Сортувати за: Порядок: Результатів:

  • C2 Property of Column Finite Matrix Rings 
    Liang Shen; Jianlong Chen (Український математичний журнал, 2014)
    A ring R is called a right C2 ring if any right ideal of R isomorphic to a direct summand of RR is also a direct summand. The ring R is called a right C3 ring if any sum of two independent summands of R is also a direct ...
  • Characterization of M₁₁ and L₃(3) by their commuting graphs 
    Salarian, M.R. (Український математичний журнал, 2010)
    For the groups M₁₁ and L₃(3), we show that their commuting graphs are unique
  • Derivations on Pseudoquotients 
    Majeed, A.; Mikusiński, P. (Український математичний журнал, 2013)
    A space of pseudoquotients denoted by B(X, S) is defined as equivalence classes of pairs (x, f); where x is an element of a nonempty set X, f is an element of S; a commutative semigroup of injective maps from X to X; and ...
  • Descriptive classes of sets and topological functors 
    Banakh, T. (Український математичний журнал, 1995)
    It is proved that the image of a normal functor from the Stone-Cech compactification of the projective class of sets also belongs to this class.
  • Determination of the coefficient of a semilinear parabolic equation for a boundary-value problem with nonlinear boundary condition 
    Akhundov, A.Ya.; Gasanova, A.I. (Український математичний журнал, 2014)
    We study the well-posedness of the inverse problem of determination of the coefficient of a minor term of a semilinear parabolic equation in the presence of a nonlinear boundary condition. The additional condition is given ...
  • Dirichlet problems for harmonic functions in half spaces 
    Qiao, Lei (Український математичний журнал, 2014)
    In our paper, we prove that if the positive part u+(x) of a harmonic function u(x) in a half space satisfies the condition of slow growth, then its negative part u−(x) can also be dominated by a similar growth condition. ...
  • Discrepancy Principle and Convergence Rates in Regularization of Monotone Ill-Posed Problems 
    Nguyen Buong (Український математичний журнал, 2003)
    The convergence rates of the regularized solution as well as its Galerkin approximations for nonlinear monotone ill-posed problems in a Banach space are established on the basis of the choice of a regularization parameter ...
  • Entire solutions of the Euler—Poisson equations 
    Belyaev, A.V. (Український математичний журнал, 2004)
    All entire solutions of Euler—Poisson equations are presented.
  • Expansions for the Fundamental Hermite Interpolation Polynomials in Terms of Chebyshev Polynomials 
    Rizk, M.M. (Український математичний журнал, 2001)
    We obtain explicit expansions of the fundamental Hermite interpolation polynomials in terms of Chebyshev polynomials in the case where the nodes considered are either zeros of the (n + 1)th-degree Chebyshev polynomial or ...
  • Finite-dimensional subalgebras in polynomial Lie algebras of rank one 
    Arzhantsev, I.V.; Makedonskii, E.A.; Petravchuk, A.P. (Український математичний журнал, 2011)
    Let Wn(K) be the Lie algebra of derivations of the polynomial algebra K[X] := K[x1, . . . , xn] over an algebraically closed field K of characteristic zero. A subalgebra L ⊆ Wn(K) is called polynomial if it is a submodule ...
  • First eigenvalue of the Laplace operator and mean curvature 
    Etemad, A. (Український математичний журнал, 2008)
    The main theorem of this paper states a relation between the first nonzero eigenvalue of Laplace operator and the squared norm of mean curvature in irreducible compact homogeneous manifolds under spatial conditions. This ...
  • First-passage probabilities for randomly excited mechanical systems by a selective Monte-Carlo simulation method 
    Labou, M. (Український математичний журнал, 2004)
    In this paper, Monte-Carlo methods used for the reliability assessment of structures under stochastic excitations are further advanced, e.g., by leading the generated samples towards the low probability range which is ...
  • Fixed-Point Theorems and Common Fixed-Point Theorems on Spaces Equipped With Vector-Valued Metrics 
    Hosseinzadeh, H.; Jabbari, A.; Razani, A. (Український математичний журнал, 2013)
    We show the existence of fixed points and common fixed points for single-valued generalized contractions on the spaces equipped with vector-valued metrics.
  • Fréchet-valued holomorphic functions on compact sets in (DFN)-spaces 
    Pham Hien Bang (Український математичний журнал, 2008)
    The aim of this paper is to give the equivalence between the weak holomorphicity and the holomorphicity of Frechet-valued functions on compact polydiscs in (DFN)-spaces. Moreover, the relations between separately holomorphic ...
  • Generalized Weyl theorem and tensor product 
    Rashid, M.H.M. (Український математичний журнал, 2012)
    We give necessary and/or sufficient conditions for the extension of the generalized a-Weyl theorem and property (gw) from A and B to A ⨂ B.
  • Generators and relations for wreath products 
    Drozd, Yu.A.; Skuratovskii, R.V. (Український математичний журнал, 2008)
    Generators and defining relations for wreath products of groups are given. Under a certain condition (conormality of generators), they are minimal.
  • Groups with Few Nonmodular Subgroups 
    De Mari, F. (Український математичний журнал, 2004)
    Let G be a Tarski-free group such that the join of all nonmodular subgroups of G is a proper subgroup in G. It is proved that G contains a finite normal subgroup N such that the quotient group G/N has a modular subgroup lattice.
  • G-Supplemented Modules 
    Koşar, B.; Nebiyev, C.; Sökmez, N. (Український математичний журнал, 2015)
    Following the concept of generalized small submodule, we define g -supplemented modules and characterize some fundamental properties of these modules. Moreover, the generalized radical of a module is defined and the ...
  • Inertial proximal point regularization algorithm for unconstrained vector convex optimization problems 
    Nguyen Buong (Український математичний журнал, 2008)
    The purpose of the paper is to investigate an iterative regularization method of proximal point type for solving ill-posed vector convex optimization problems in Hilbert spaces. The application to the convex feasibility ...
  • I-radicals and right perfect rings 
    Rump, W. (Український математичний журнал, 2007)
    We determine the rings for which every hereditary torsion theory is an S-torsion theory in the sense of Komarnitskiy. We show that such rings admit a primary decomposition. Komarnitskiy obtained this result in the special ...

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