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Перегляд Algebra and Discrete Mathematics, 2009, Vol. 8 за назвою

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2009, Vol. 8 за назвою

Сортувати за: Порядок: Результатів:

  • Partial Hopf actions, partial invariants and a Morita context 
    Marcelo Muniz S. Alves; Batista, E. (Algebra and Discrete Mathematics, 2009)
    Partial actions of Hopf algebras can be considered as a generalization of partial actions of groups on algebras. Among important properties of partial Hopf actions, it is possible to assure the existence of enveloping ...
  • Prime radical of Ore extensions over δ -rigid rings 
    Bhat, V.K. (Algebra and Discrete Mathematics, 2009)
    Let R be a ring. Let σ be an automorphism of R and δ be a σ-derivation of R. We say that R is a δ-rigid ring if aδ(a)∈P(R) implies a∈P(R), a∈R; where P(R) is the prime radical of R. In this article, we find a relation ...
  • Rings of functions on non-abelian groups 
    Maxson, C.J. (Algebra and Discrete Mathematics, 2009)
    For several classes of finite nonabelian groups we investigate the structure of the ring of functions, R(C), determined by the cover C of maximal abelian subgroups. We determine the Jacobson radical J(R(C)) and the semisimple ...
  • Semisimple group codes and dihedral codes 
    Dutra, F.S.; Ferraz, R.A.; Milies, C.P. (Algebra and Discrete Mathematics, 2009)
    We consider codes that are given as two-sided ideals in a semisimple finite group algebra FqG defined by idempotents constructed from subgroups of G in a natural way and compute their dimensions and weights. We give a ...
  • Some classes of directoid groups 
    Gardner, B.J.; Parmenter, M.M. (Algebra and Discrete Mathematics, 2009)
    Directoid groups are 2-torsion-free abelian groups with an extra binary operation assigning upper bounds. They thus constitute a generalization of abelian l-groups and an equational substitute for directed abelian groups. ...
  • Some properties of nilpotent groups 
    Gaglione, A.M.; Lipschutz, S.; Spellman, D. (Algebra and Discrete Mathematics, 2009)
    Property S, a finiteness property which can hold in infinite groups, was introduced by Stallings and others and shown to hold in free groups. In [2] it was shown to hold in nilpotent groups as a consequence of a technical ...
  • The central polynomials for the finite dimensional Grassmann algebras 
    Koshlukov, P.; Krasilnikov, A.; Elida Alves da Silva (Algebra and Discrete Mathematics, 2009)
    In this note we describe the central polynomials for the finite dimensional unitary Grassmann algebras Gk over an infinite field F of characteristic ≠2. We exhibit a set of generators of C(Gk), the T-space of the central ...
  • The structure of infinite dimensional linear groups satisfying certain finiteness conditions 
    Jose M. Munoz-Escolano; Javier Otal; Semko, N.N. (Algebra and Discrete Mathematics, 2009)
    We review some recent results on the structure of infinite dimensional linear groups satisfying some finiteness conditions on certain families of subgroups. This direction of research is due to Leonid A. Kurdachenko, who ...
  • Tiled orders of width 3 
    Zhuravlev, V.; Zhuravlyov, D. (Algebra and Discrete Mathematics, 2009)
    We consider projective cover over tiled order and calculate the kernel of epimorphism from direct sum of submodules of distributive module to their sum.
  • Weak comultiplication modules over a pullback of commutative local Dedekind domains 
    Reza Ebrahimi Atani; Shahabaddin Ebrahimi Atani (Algebra and Discrete Mathematics, 2009)
    The goal point of recent attempts to classify indecomposable modules over non-artinian rings has been pullback rings. The purpose of this paper is to outline a new approach to the classification of indecomposable weak ...

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