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Перегляд Algebra and Discrete Mathematics, 2006, № 3 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2006, № 3 за датою випуску

Сортувати за: Порядок: Результатів:

  • The generalized path algebras over standardly stratified algebras 
    Wang, S. (Algebra and Discrete Mathematics, 2006)
    In this note, it is proved that the generalized path algebras over standardly stratified algebras are also standardly stratified, and the generalized path algebras over quasi-hereditary algebras are also quasi-hereditary. ...
  • Arithmetic properties of exceptional lattice paths 
    Rump, W. (Algebra and Discrete Mathematics, 2006)
    For a fixed real number ρ > 0, let L be an affine line of slope ρ ⁻¹ in R ² . We show that the closest approximation of L by a path P in Z ² is unique, except in one case, up to integral translation. We study this ...
  • Absolutely ubiquitous groups 
    Ivanov, A.; Majcher, K. (Algebra and Discrete Mathematics, 2006)
    We characterise absolutely ubiquitous groups in the class of model complete ω-categorical groups.
  • On 𝔉-radicals of finite π-soluble groups 
    Guo, W.; Xi Liu; Baojun Li (Algebra and Discrete Mathematics, 2006)
    In this paper, we prove that for every local πsaturated Fitting class 𝔉 with char(𝔉) = P, the F-radical of every finite π-soluble groups G has the property: CG(G𝔉 ) ⊆ G𝔉 . From this, some well known results are followed ...
  • On the Amitsur property of radicals 
    Loi, N.V.; Wiegandt, R. (Algebra and Discrete Mathematics, 2006)
    The Amitsur property of a radical says that the radical of a polynomial ring is again a polynomial ring. A hereditary radical γ has the Amitsur property if and only if its semisimple class is polynomially extensible and ...
  • Twisted conjugacy classes of Automorphisms of Baumslag-Solitar groups 
    Fel’shtyn, A.; Goncalves, D.L. (Algebra and Discrete Mathematics, 2006)
    Let φ : G → G be a group endomorphism where G is a finitely generated group of exponential growth, and denote by R(φ) the number of twisted φ-conjugacy classes. Fel’shtyn and Hill [7] conjectured that if φ is injective, ...
  • Weakly P-small not P-small subsets in Abelian groups 
    Banakh, T.; Lyaskovska, N. (Algebra and Discrete Mathematics, 2006)
    Answering a question of D. Dikranjan and I. Protasov we prove that each infinite Abelian group contains a weakly P-small subset that is not P-small.
  • On fully wild categories of representations of posets 
    Kasjan, S. (Algebra and Discrete Mathematics, 2006)
    Assume that I is a finite partially ordered set and k is a field. We prove that if the category prin(kI) of prinjective modules over the incidence k-algebra kI of I is fully k-wild then the category fpr(I,k) of finite ...
  • Bimodule problems and cell complexes 
    Babych, V.; Golovashchuk, N. (Algebra and Discrete Mathematics, 2006)
    We investigate the geometrical properties of the universal covering Ab of a bimodule problem A.
  • τ-complemented and τ-supplemented modules 
    Al-Takhman, K.; Lomp, C.; Wisbauer, R. (Algebra and Discrete Mathematics, 2006)
    Proper classes of monomorphisms and short exact sequences were introduced by Buchsbaum to study relative homological algebra. It was observed in abelian group theory that complement submodules induce a proper class of ...

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