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Перегляд Algebra and Discrete Mathematics, 2010, Vol. 09, № 2 за назвою

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2010, Vol. 09, № 2 за назвою

Сортувати за: Порядок: Результатів:

  • A note about splittings of groups and commensurability under a cohomological point of view 
    Maria Gorete Carreira Andrade; Ermınia de Lourdes Campelloi Fanti (Algebra and Discrete Mathematics, 2010)
    Let G be a group, let S be a subgroup with infinite index in G and let FSG be a certain Z2G-module. In this paper, using the cohomological invariant E(G,S,FSG) or simply E~(G,S) (defined in [2]), we analyze some results ...
  • Automorphisms of finitary incidence rings 
    Khripchenko, N. (Algebra and Discrete Mathematics, 2010)
  • Biserial minor degenerations of matrix algebras over a field 
    Wlodarska, A. (Algebra and Discrete Mathematics, 2010)
    Let n≥2 be a positive integer, K an arbitrary field, and q=[q⁽¹⁾|…|q⁽ⁿ⁾] an n-block matrix of n×n square matrices q⁽¹⁾,…,q⁽ⁿ⁾ with coefficients in K satisfying the conditions (C1) and (C2) listed in the introduction. We ...
  • Camina groups with few conjugacy classes 
    Cangelmi, L.; Muktibodh, A.S. (Algebra and Discrete Mathematics, 2010)
    Let G be a finite group having a proper normal subgroup K such that the conjugacy classes outside K coincide with the cosets of K. The subgroup K turns out to be the derived subgroup of G, so the group G is either abelian ...
  • Odd-quadratic Malcev superalgebras 
    Barreiro, E. (Algebra and Discrete Mathematics, 2010)
    We present some properties of odd-quadratic Malcev superalgebras. The aim of this paper is to present the notions of double extension and generalized double extension of odd-quadratic Malcev superalgebras, culminating in ...
  • Perturbations of discrete lattices and almost periodic sets 
    Favorov, S.; Kolbasina, Y. (Algebra and Discrete Mathematics, 2010)
    A discrete set in the p-dimensional Euclidian space is almost periodic, if the measure with the unite masses at points of the set is almost periodic in the weak sense. We propose to construct positive almost periodic ...
  • Preradicals and characteristic submodules: connections and operations 
    Kashu, A.I. (Algebra and Discrete Mathematics, 2010)
    For an arbitrary module M∈R-Mod the relation between the lattice Lch(RM) of characteristic (fully invariant) submodules of M and big lattice R-pr of preradicals of R-Mod is studied. Some isomorphic images of Lch(RM) in ...
  • Semi-commutativity criteria and self-coincidence elements expressed by vectors properties of n-ary groups 
    Kulazhenko, Yu.I. (Algebra and Discrete Mathematics, 2010)
    In this paper new criteria of semi-commutativity and results on self-coincidence of an arbitrary point P in the terms of properties of vectors of n-ary groups are obtained.
  • Some combinatorial problems in the theory of symmetric inverse semigroups 
    Umar, A. (Algebra and Discrete Mathematics, 2010)
    Let Xn={1,2,⋯,n} and let α:Domα⊆Xn→Imα⊆Xn be a (partial) transformation on Xn. On a partial one-one mapping of Xn the following parameters are defined: the height of α is h(α)=|Imα|, the right [left] waist of α is ...
  • Thin systems of generators of groups 
    Lutsenko, I. (Algebra and Discrete Mathematics, 2010)
    A subset T of a group G with the identity e is called k-thin (k∈N) if |A∩gA| ≤ k, |A∩Ag| ≤ k for every g∈G, g≠e. We show that every infinite group G can be generated by some 2-thin subset. Moreover, if G is either Abelian ...

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