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Перегляд Algebra and Discrete Mathematics, 2003, № 3 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2003, № 3 за датою випуску

Сортувати за: Порядок: Результатів:

  • Gyrogroups and left gyrogroups as transversals of a special kind 
    Kuznetsov, E. (Algebra and Discrete Mathematics, 2003)
    In this article we study gyrogroups and left gyrogroups as transversals in some suitable groups to its subgroups. These objects were introduced into consideration in a connection with an investigation of analogies between ...
  • On equivalence of some subcategories of modules in Morita contexts 
    Kashu, A.I. (Algebra and Discrete Mathematics, 2003)
  • On a group theoretical construction of expanding graphs 
    Ustimenko, V.A. (Algebra and Discrete Mathematics, 2003)
  • On the separability of the restriction functor 
    Theohari-Apostolidi, Th.; Vavatsoulas, H. (Algebra and Discrete Mathematics, 2003)
    Let G be a group, Λ = L σ∈G Λσ a strongly graded ring by G, H a subgroup of G and ΛH = L σ∈H Λσ. We give a necessary and sufficient condition for the ring Λ/ΛH to be separable, generalizing the corresponding result ...
  • The commutator Hopf Galois extensions 
    Szeto, G.; Xue, L. (Algebra and Discrete Mathematics, 2003)
    Let H be a finite dimentional Hopf algebra over a field k and H∗ the dual Hopf algebra of H. Then a commutator right H∗ -Galois extension B of BH is characterized in terms of the smash product B#H and some relationships ...
  • On equivalence of some subcategories of modules in Morita contexts 
    Kashu, A.I. (Algebra and Discrete Mathematics, 2003)
  • An algebraic version of the Strong Black Box 
    Göbel, R.; Wallutis, S.L. (Algebra and Discrete Mathematics, 2003)
    Various versions of the prediction principle called the “Black Box” are known. One of the strongest versions can be found in [EM]. There it is formulated and proven in a model theoretic way. In order to apply it to ...
  • N – real fields 
    Feigelstock, S. (Algebra and Discrete Mathematics, 2003)
    A field F is n-real if −1 is not the sum of n squares in F. It is shown that a field F is m-real if and only if rank (AAt ) = rank (A) for every n × m matrix A with entries from F. An n-real field F is n-real closed ...
  • H- and R-cross-sections of the full finite semigroup Tn 
    Pyekhtyeryev, V. (Algebra and Discrete Mathematics, 2003)
    All H− and R− cross-sections of the full finite semigroup Tn of all transformations of the set N = {1, 2, . . . , n} are described.

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