Наукова електронна бібліотека
періодичних видань НАН України

Перегляд Algebra and Discrete Mathematics, 2005, № 4 за назвою

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2005, № 4 за назвою

Сортувати за: Порядок: Результатів:

  • Action type geometrical equivalence of representations of groups 
    Plotkin, B.; Tsurkov, A. (Algebra and Discrete Mathematics, 2005)
    In the paper we prove (Theorem 8.1) that there exists a continuum of non isomorphic simple modules over KF₂, where F₂ is a free group with 2 generators (compare with [Ca] where a continuum of non isomorphic simple ...
  • Automaton extensions of mappings on the set of words defined by finite Mealy automata 
    Osys, M. (Algebra and Discrete Mathematics, 2005)
    The properties of an automaton extensions of mappings on the set of words over a finite alphabet is discussed. We obtain the criterion whether the automaton extension of given mapping if defined by a finite automaton.
  • Generators and relations for the semigroups of increasing functions on N and Z 
    Doroshenko, V. (Algebra and Discrete Mathematics, 2005)
    The semigroups of all increasing functions over N and Z are considered. It is shown that both these semigroups do not admit an irreducible system of generators. In their subsemigroups of cofinite functions all irreducible ...
  • Normal functors in the coarse category 
    Frider, V. (Algebra and Discrete Mathematics, 2005)
    We define the canonical coarse structure on the spaces of the form FX, where F is a finitary normal functor of finite degree and show that every finitary (i.e., preserving the class of finite spaces) normal functor of ...
  • Presentations and word problem for strong semilattices of semigroups 
    Ayık, G.; Ayık, H.; Unlu, Y. (Algebra and Discrete Mathematics, 2005)
    Let I be a semilattice, and Si (i ∈ I) be a family of disjoint semigroups. Then we prove that the strong semilattice S = S[I, Si , φj,i] of semigroups Si with homomorphisms φj,i : Sj → Si (j ≥ i) is finitely presented ...
  • Recurrence sequences over residual rings 
    Sanchez, S.; Criado, R.; Vega, C. (Algebra and Discrete Mathematics, 2005)
    In this work we are carried out an algebraic study of the congruential lineal generator. The obtained results make possible several combinatorial approaches that improve significantly the period length and their behavior.
  • Rings which have (m,n)-flat injective modules 
    Zhanmin, Z.; Zhangsheng, X. (Algebra and Discrete Mathematics, 2005)
    A ring R is said to be a left IF − (m, n) ring if every injective left R-module is (m, n)-flat. In this paper, several characterizations of left IF − (m, n) rings are investigated, some conditions under which R is left ...

Пошук


Розширений пошук

Перегляд

Мій обліковий запис