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Перегляд Algebra and Discrete Mathematics, 2021, Vol. 31, Vol. 32 за назвою

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2021, Vol. 31, Vol. 32 за назвою

Сортувати за: Порядок: Результатів:

  • Semi-lattice of varieties of quasigroups with linearity 
    Sokhatsky, F.M.; Krainichuk, H.V.; Sydoruk, V.A. (Algebra and Discrete Mathematics, 2021)
    A σ-parastrophe of a class of quasigroups 𝕬 is a class σ𝕬 of all σ-parastrophes of quasigroups from 𝕬. A set of all pairwise parastrophic classes is called a parastrophic orbit or a truss. A parastrophically closed ...
  • Semisymmetric Zp-covers of the graph C20 
    Talebi, A.A.; Mehdipoor, N. (Algebra and Discrete Mathematics, 2021)
    A graph X is said to be G-semisymmetric if it is regular and there exists a subgroup G of A := Aut(X) acting transitively on its edge set but not on its vertex set. In the case of G = A, we call X a semisymmetric graph. ...
  • Skew PBW extensions over symmetric rings 
    Reyes, A.; Suárez, H. (Algebra and Discrete Mathematics, 2021)
    Our purpose in this paper is to characterize skew PBW extensions over several weak symmetric rings. As a consequence of our treatment, we extend results in the literature concerning the property of symmetry for commutative ...
  • Some commutativity criteria for 3-prime near-rings 
    Raji, A. (Algebra and Discrete Mathematics, 2021)
    In the present paper, we introduce the notion of *-generalized derivation in near-ring N and investigate some properties involving that of *-generalized derivation of a *-prime near-ring N which forces N to be a commutative ...
  • Some properties of various graphs associated with finite groups 
    Chen, X.Y.; Moghaddamfar, A.R.; Zohourattar, M. (Algebra and Discrete Mathematics, 2021)
    In this paper we investigate some properties of the power graph and commuting graph associated with a finite group, using their tree-numbers. Among other things, it is shown that the simple group L₂(7) can be characterized ...
  • Spectra of locally matrix algebras 
    Bezushchak, O. (Algebra and Discrete Mathematics, 2021)
    We describe spectra of associative (not necessarily unital and not necessarily countable-dimensional) locally matrix algebras. We determine all possible spectra of locally matrix algebras and give a new proof of Dixmier–Baranov ...
  • S-second submodules of a module 
    Farshadifar, F. (Algebra and Discrete Mathematics, 2021)
    Let R be a commutative ring with identity and let M be an R-module. The main purpose of this paper is to introduce and study the notion of S-second submodules of an R-module M as a generalization of second submodules of M.
  • Structure of relatively free trioids 
    Zhuchok, A.V. (Algebra and Discrete Mathematics, 2021)
    Loday and Ronco introduced the notions of a trioid and a trialgebra, and constructed the free trioid of rank 1 and the free trialgebra. This paper is a survey of recent developments in the study of free objects in the ...
  • The center of the wreath product of symmetric group algebras 
    Tout, O. (Algebra and Discrete Mathematics, 2021)
    We consider the wreath product of two symmetric groups as a group of blocks permutations and we study its conjugacy classes. We give a polynomiality property for the structure coefficients of the center of the wreath product ...
  • The prime spectrum of the universal enveloping algebra of the 1-spatial ageing algebra and of U(gl₂) 
    Bavula, V.; Lu, T. (Algebra and Discrete Mathematics, 2021)
    For the algebras in the title, their prime, primitive and maximal spectra are explicitly described. For each prime ideal an explicit set of generators is given. An explicit description of all the containments between primes ...
  • The structure of g-digroup actions and representation theory 
    Rodríguez-Nieto, J.G.; Salazar-Díaz, O.P.; Velásquez, R. (Algebra and Discrete Mathematics, 2021)
    The aim of this paper is to propose two possible ways of defining a g-digroup action and a first approximation to representation theory of g-digroups.

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