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Перегляд Algebra and Discrete Mathematics, 2018, Vol. 25, Vol. 26 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2018, Vol. 25, Vol. 26 за датою випуску

Сортувати за: Порядок: Результатів:

  • Global outer connected domination number of a graph 
    Alishahi, M.; Mojdeh, D.A. (Algebra and Discrete Mathematics, 2018)
    In this paper we obtain some bounds for outer connected domination numbers and global outer connected domination numbers of graphs.
  • On the Fitting ideals of a multiplication module 
    Hadjirezaei, S.; Karimzadeh, S. (Algebra and Discrete Mathematics, 2018)
    In this paper, we characterize all finitely generated multiplication R-modules whose the first nonzero Fitting ideal of them is contained in only finitely many maximal ideals. Also, we prove that a finitely generated ...
  • A way of computing the Hilbert series 
    Haider, A. (Algebra and Discrete Mathematics, 2018)
    Let S = K[x1, x2, . . . , xn] be a standard graded K-algebra for any field K. Without using any heavy tools of commutative algebra we compute the Hilbert series of graded S-module S/I, where I is a monomial ideal.
  • Construction of a complementary quasiorder 
    Jakubíková-Studenovská, D.; Janičková, L. (Algebra and Discrete Mathematics, 2018)
    For a monounary algebra A = (A, f) we study the lattice QuordA of all quasiorders of A, i.e., of all reflexive and transitive relations compatible with f. Monounary algebras (A, f) whose lattices of quasiorders are ...
  • On application of linear algebra in classification cubic s-regular graphs of order 28p 
    Imani, A.; Mehdipoor, N.; Talebi, A.A. (Algebra and Discrete Mathematics, 2018)
    A graph is s-regular if its automorphism group acts regularly on the set of s-arcs. In this paper, by applying concept linear algebra, we classify the connected cubic s-regular graphs of order 28p for each s ≥ 1, and prime p.
  • Gram matrices and Stirling numbers of a class of diagram algebras, I 
    N. Karimilla Bi; Parvathi, M. (Algebra and Discrete Mathematics, 2018)
    In this paper, we introduce Gram matrices for the signed partition algebras, the algebra of Z₂-relations and the partition algebras. The nondegeneracy and symmetic nature of these Gram matrices are establised. Also, (s₁, ...
  • Closure operators in modules and adjoint functors, I 
    Kashu, A.I. (Algebra and Discrete Mathematics, 2018)
    In the present work the relations between the closure operators of two module categories are investigated in the case when the given categories are connected by two covariant adjoint functors H: R-Mod → S-Mod and T : S-Mod ...
  • Neighborhood-prime labeling of some product graphs 
    Patel, S.K.; Shrimali, N.P. (Algebra and Discrete Mathematics, 2018)
    We have introduced the concept of neighborhood-prime labeling and investigated it for paths, cycles, wheels and union of such graphs earlier. In this paper, we construct neighborhood-prime labelings for graphs that are ...
  • Weak equivalence of representations of Kleinian 4-group 
    Plakosh, A. (Algebra and Discrete Mathematics, 2018)
    We give a classification of representations of the Kleinian 4-group up to weak equivalence.
  • Multiplicative orders of elements in Conway's towers of finite fields 
    Popovych, R. (Algebra and Discrete Mathematics, 2018)
    We give a lower bound on multiplicative orders of certain elements in defined by Conway towers of finite fields of characteristic 2 and also formulate a condition under that these elements are primitive.
  • Characterization of regular convolutions 
    Sagi S. (Algebra and Discrete Mathematics, 2018)
    In this paper, we present a characterization of regular convolution.
  • Modules which have a rad-supplement that is a direct summand in every extension 
    Türkmen, B.N.; Türkmen, E. (Algebra and Discrete Mathematics, 2018)
    In this paper, we introduce the concept of modules with the properties (RE) and (SRE), and we provide various properties of these modules. In particular,we prove that a semisimple module M is Rad-supplementing if and only ...
  • Enumeration of strong dichotomy patterns 
    Agustín-Aquino, O.A. (Algebra and Discrete Mathematics, 2018)
    We apply the version of Pólya-Redfield theory obtained by White to count patterns with a given automorphism group to the enumeration of strong dichotomy patterns, that is, we count bicolor patterns of Z2k with respect to ...
  • On certain homological invariant and its relation with Poincaré duality pairs 
    Andrade, M.G.C.; Gazon, A.B.; Lima A.F. (Algebra and Discrete Mathematics, 2018)
    Let G be a group, S = {Sᵢ, i ∊ I} a non empty family of (not necessarily distinct) subgroups of infinite index in G and M a Z₂G-module. In [4] the authors defined a homological invariant E*(G, S,M), which is “dual” to the ...
  • On k-graceful labeling of pendant edge extension of complete bipartite graphs 
    Bhoumik, S.; Mitra, S. (Algebra and Discrete Mathematics, 2018)
    For any two positive integers m, n, we denote the graph Km,n ⊙ K₁ by G. Ma Ke-Jie proposed a conjecture [9] that pendant edge extension of a complete bipartite graph is a k-graceful graph for k > 2. In this paper we prove ...
  • On dual Rickart modules and weak dual Rickart modules 
    Keskin Tütüncü, D.; Orhan Ertas, N.; Tribak, R. (Algebra and Discrete Mathematics, 2018)
    Let R be a ring. A right R-module M is called d-Rickart if for every endomorphism φ of M, φ(M) is a direct summand of M and it is called wd-Rickart if for every nonzero endomorphism φ of M, φ(M) contains a nonzero direct ...
  • Gram matrices and Stirling numbers of a class of diagram algebras, II 
    Karimilla Bi, N.; Parvathi, M. (Algebra and Discrete Mathematics, 2018)
    In the paper [6], we introduced Gram matrices for the signed partition algebras, the algebra of Z₂-relations and the partition algebras. (s₁, s₂, r₁, r₂, p₁, p₂)-Stirling numbers of the second kind are also introduced and ...
  • Cross-cap singularities counted with sign 
    Krzyzanowska, I. (Algebra and Discrete Mathematics, 2018)
    A method for computing the algebraic number of cross-cap singularities for mapping from m-dimensional compact manifold with boundary M ⊂ Rᵐ into R²ᵐ⁻¹, m is odd, is presented. As an application, the intersection number of ...
  • On functional equations and distributive second order formulae with specialized quantifiers 
    Movsisyan, Yu. (Algebra and Discrete Mathematics, 2018)
    The structure of invertible algebras with distributive second order formulae with specialized quantifiers is given. As a consequence, the applications for solutions of the some functional equations of distributivity on ...
  • Periods of Tribonacci sequences and elliptic curves 
    AIt-Amrane, L.; Belbachir, H. (Algebra and Discrete Mathematics, 2018)
    We will study the periods of Tribonacci sequences associated to elliptic curves. This work is motivated by a paper of Coleman et al. who did it for classical Fibonacci sequences. We are convinced that similar results modulo ...

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