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Перегляд Algebra and Discrete Mathematics, 2017, Vol. 24, № 2 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2017, Vol. 24, № 2 за датою випуску

Сортувати за: Порядок: Результатів:

  • A note on simplicity of contact Lie algebras over GF(2) 
    Zargeh, C. (Algebra and Discrete Mathematics, 2017)
    In this note we investigate the structure of contact Lie algebras when the ground field is of characteristic 2. In order to describe the simple constituent of contact Lie algebras, by using computer algebra system, GAP, ...
  • Total global neighbourhood domination 
    Siva Rama Raju, S.V.; Nagaraja Rao, I.H. (Algebra and Discrete Mathematics, 2017)
    A subset D of the vertex set of a connected graph G is called a total global neighbourhood dominating set (tgnd-set) of G if and only if D is a total dominating set of G as well as GN, where GN is the neighbourhood graph ...
  • On locally finite groups whose cyclic subgroups are GNA-subgroups 
    Pypka, A.A. (Algebra and Discrete Mathematics, 2017)
    In this paper we obtain the description of locally finite groups whose cyclic subgroups are GNA-subgroups.
  • Some properties of the nilradical and non-nilradical graphs over finite commutative ring Zn 
    Chandra, S.; Prakash, O.; Suthar, S. (Algebra and Discrete Mathematics, 2017)
    Let Zn be the finite commutative ring of residue classes modulo n with identity and Γ(Zn) be its zero-divisor graph. In this paper, we investigated some properties of nilradical graph, denoted by N(Zn) and non-nilradical ...
  • Embeddings of (proper) power graphs of finite groups 
    Doostabadi, A.; Farrokhi D.G., M. (Algebra and Discrete Mathematics, 2017)
    The (proper) power graph of a group is a graph whose vertex set is the set of all (nontrivial) elements of the group and two distinct vertices are adjacent if one is a power of the other. Various kinds of planarity of ...
  • Dickson's theorem for Bol loops 
    Movsisyan, Y. (Algebra and Discrete Mathematics, 2017)
    Dickson characterized groups in terms of one-sided invertibility. In this note, we give comparable characterizations for Bol and Moufang loops.
  • Some remarks on Φ-sharp modules 
    Darani, A.Y.; Rahmatinia, M. (Algebra and Discrete Mathematics, 2017)
    The purpose of this paper is to introduce some new classes of modules which is closely related to the classes of sharp modules, pseudo-Dedekind modules and TV-modules. In this paper we introduce the concepts of Φ-sharp ...
  • On the genus of the annhilator graph of a commutative ring 
    Chelvam, T.T.; Selvakumar, K. (Algebra and Discrete Mathematics, 2017)
    Let R be a commutative ring and Z(R)* be its set of non-zero zero-divisors. The annihilator graph of a commutative ring R is the simple undirected graph AG(R) with vertices Z(R)*, and two distinct vertices x and y are ...
  • On the difference between the spectral radius and the maximum degree of graphs 
    Oboudi, M.R. (Algebra and Discrete Mathematics, 2017)
    Let G be a graph with the eigenvalues λ₁(G)≥⋯≥λn(G). The largest eigenvalue of G, λ₁(G), is called the spectral radius of G. Let β(G)=Δ(G)−λ₁(G), where Δ(G) is the maximum degree of vertices of G. It is known that if G is ...
  • On disjoint union of M-graphs 
    Kozerenko, S. (Algebra and Discrete Mathematics, 2017)
    Given a pair (X,σ) consisting of a finite tree X and its vertex self-map σ one can construct the corresponding Markov graph Γ(X,σ) which is a digraph that encodes σ-covering relation between edges in X. M-graphs are Markov ...
  • Lattice rings: an interpretation of L-fuzzy rings as habitual algebraic structures 
    Kurdachenko, L.A.; Ya, I.; Yashchuk, V.S. (Algebra and Discrete Mathematics, 2017)
    In this paper, we introduce some algebraic structure associated with rings and lattices. It appeared as the result of our new approach to the fuzzy rings and L-fuzzy rings where L is a lattice. This approach allows us to ...
  • The edge chromatic number of ΓI(R) 
    Kala, R.; Mallika, A.; Selvakumar, K. (Algebra and Discrete Mathematics, 2017)
    For a commutative ring R and an ideal I of R, the ideal-based zero-divisor graph is the undirected graph ΓI(R) with vertices {x∈R−I:xy∈I for some y∈R−I}, where distinct vertices x and y are adjacent if and only if xy∈I. ...
  • Weak factorization systems and fibrewise regular injectivity for actions of pomonoids on posets 
    Farsad, F.; Madanshekaf, A. (Algebra and Discrete Mathematics, 2017)
    Let S be a pomonoid. In this paper, Pos-S, the category of S-posets and S-poset maps, is considered. One of the main aims of this paper is to draw attention to the notion of weak factorization systems in Pos-S. We show ...

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