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Перегляд Algebra and Discrete Mathematics, 2018, Vol. 25, № 2 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2018, Vol. 25, № 2 за датою випуску

Сортувати за: Порядок: Результатів:

  • Automorphisms of the endomorphism semigroup of a free abelian diband 
    Zhuchok, Y.V. (Algebra and Discrete Mathematics, 2018)
    We determine all isomorphisms between the endomorphism semigroups of free abelian dibands and prove that all automorphisms of the endomorphism semigroup of a free abelian diband are inner.
  • A random Bockstein operator 
    Zabka, M.J. (Algebra and Discrete Mathematics, 2018)
    As more of topology’s tools become popular in analyzing high-dimensional data sets, the goal of understanding the underlying probabilistic properties of these tools becomes even more important. While much attention has ...
  • The growth function of the adding machine 
    Skochko, V. (Algebra and Discrete Mathematics, 2018)
    We compute the growth function of the generalized adding machine and show that its generating function is not algebraic.
  • Square difference labeling of some union and disjoint union graphs 
    Sherman, Z. (Algebra and Discrete Mathematics, 2018)
    The paper deals with methods of constructing square difference labeling of caterpillars and graphs derived from two operations: path union of cycles and disjoint union of stars. The existence of the square difference ...
  • Some more algebra on ultrafilters in metric spaces 
    Protasov, I. (Algebra and Discrete Mathematics, 2018)
    We continue algebraization of the set of ultrafilters on a metric spaces initiated in [6]. In particular, we define and study metric counterparts of prime, strongly prime and right cancellable ultrafilters from the Stone-Čech ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 ...
  • 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 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 ...
  • 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 ...

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