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Перегляд Algebra and Discrete Mathematics, 2016, Vol. 21, Vol. 22 за датою випуску

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2016, Vol. 21, Vol. 22 за датою випуску

Сортувати за: Порядок: Результатів:

  • Involution rings with unique minimal *-biideal 
    Mendes, D.I.C. (Algebra and Discrete Mathematics, 2016)
    The structure of certain involution rings which have exactly one minimal *-biideal is determined. In addition, involution rings with identity having a unique maximal biideal are characterized.
  • The comb-like representations of cellular ordinal balleans 
    Protasov, I.; Protasova, K. (Algebra and Discrete Mathematics, 2016)
    Given two ordinal λ and γ, let f:[0,λ)→[0,γ) be a function such that, for each α<γ, sup{f(t):t∈[0,α]}<γ. We define a mapping df:[0,λ)×[0,λ)⟶[0,γ) by the rule: if x<y then df(x,y)=df(y,x)=sup{f(t):t∈(x,y]}, d(x,x)=0. The ...
  • Classification of L-cross-sections of the finite symmetric semigroup up to isomorphism 
    Bondar, E. (Algebra and Discrete Mathematics, 2016)
    Let Tn be the symmetric semigroup of full transformations on a finite set with n elements. In the paper we give a counting formula for the number of L-cross-sections of Tn and classify all L-cross-sections of Tn up to ...
  • Co-intersection graph of submodules of a module 
    Mahdavi, L.A.; Talebi, Y. (Algebra and Discrete Mathematics, 2016)
    Let M be a unitary left R-module where R is a ring with identity. The co-intersection graph of proper submodules of M, denoted by Ω(M), is an undirected simple graph whose the vertex set V(Ω) is a set of all non-trivial ...
  • Alfred Lvovich Shmelkin (12.06.1938 — 22.12.2015) 
    Автор відсутній (Algebra and Discrete Mathematics, 2016)
    With deep sorrow and regret we learnt about the death on December 22, 2015 of our colleague, Alfred Lvovich Shmelkin, a prominent algebraist, Honoured Professor of Lomonosov Moscow State University and member of ADM editorial ...
  • Generalization of primal superideals 
    Jaber, A. (Algebra and Discrete Mathematics, 2016)
    Let R be a commutative super-ring with unity 16= 0. A proper super ideal of R is a super ideaI of R such that I 6=R.Letφ:I(R)→I(R)∪ {∅}be any function, where I(R) denotes the set of all proper super ideals of R. A homogeneous ...
  • On colouring integers avoiding t-AP distance-sets 
    Ahmed, T. (Algebra and Discrete Mathematics, 2016)
    In this paper, we investigate the structure of sets with bounded number of pairs with certain gaps.
  • The groups whose cyclic subgroups are either ascendant or almost self-normalizing 
    Kurdachenko, L.A.; Pypka, A.A.; Semko, N.N. (Algebra and Discrete Mathematics, 2016)
    The main result of this paper shows a description of locally finite groups, whose cyclic subgroups are either almost self-normalizing or ascendant. Also, we obtained some natural corollaries of the above situation.
  • The action of Sylow 2-subgroups of symmetric groups on the set of bases and the problem of isomorphism of their Cayley graphs 
    Pawlik, B.T. (Algebra and Discrete Mathematics, 2016)
    Base (minimal generating set) of the Sylow 2-subgroup of S₂n is called diagonal if every element of this set acts non-trivially only on one coordinate, and different elements act on different coordinates. The Sylow 2-subgroup ...
  • Normally ζ-reversible profinite groups 
    Cimetta, L.; Lucchini, A. (Algebra and Discrete Mathematics, 2016)
    We examine (finitely generated) profinite groups in which two formal Dirichlet series, the normal subgroup zeta function and the normal probabilistic zeta function, coincide; we call these groups normally ζ-reversible. We ...
  • A survey of results on radicals and torsions in modules 
    Kashu, A.I. (Algebra and Discrete Mathematics, 2016)
    In this work basic results of the author on radicals in module categories are presented in a short form. Principal topics are: types of preradicals and their characterizations; classes of R-modules and sets of left ideals ...
  • On nilpotent Lie algebras of derivations with large center 
    Sysak, K. (Algebra and Discrete Mathematics, 2016)
    Let K be a field of characteristic zero and A an associative commutative K-algebra that is an integral domain. Denote by R the quotient field of A and by W(A)=RDerA the Lie algebra of derivations on R that are products of ...
  • Generalized norms of groups 
    Drushlyak, M.G.; Lukashova, T.D.; Lyman, F.M. (Algebra and Discrete Mathematics, 2016)
    In this survey paper the authors specify all the known findings related to the norms of the group and their generalizations. Special attention is paid to the analysis of their own study of different generalized norms, ...
  • Mykola Komarnytskyi (25.05.1948 — 21.04.2016) 
    Автор відсутній (Algebra and Discrete Mathematics, 2016)
    Distinguished Professor of Ivan Franko L'viv National University, Doctor of Sciences Mykola Komarnytskyi passed away on April 21, 2016. His sudden death is a great loss for L'viv mathematicians and for the entire Ukrainian ...
  • On nilpotent Lie algebras of derivations of fraction fields 
    Petravchuk, A.P. (Algebra and Discrete Mathematics, 2016)
  • The Endomorphism Monoids of (n − 3)-regular Graphs of Order n 
    Gyurov, B.; Knauer, U.; Panma, S.; Pipattanajinda, N. (Algebra and Discrete Mathematics, 2016)
    This paper is motivated by the result of W. Li, he presents an infinite family of graphs - complements of cycles - which possess a regular monoid. We show that these regular monoids are completely regular. Furthermore, we ...
  • On n-stars in colorings and orientations of graphs 
    Protasov, I.V. (Algebra and Discrete Mathematics, 2016)
    An n-star S in a graph G is the union of geodesic intervals I1,…,Ik with common end O such that the subgraphs I1∖{O},…,Ik∖{O} are pairwise disjoint and l(I1)+…+l(Ik)=n. If the edges of G are oriented, S is directed if each ...
  • Finite local nearrings with split metacyclic additive group 
    Raievska, I.I.; Raievska, M.I.; Sysak, Y.P. (Algebra and Discrete Mathematics, 2016)
    In the paper the split metacyclic groups which are the additive groups of finite local nearrings are classified
  • A horizontal mesh algorithm for posets with positive Tits form 
    Kaniecki, M.; Kosakowska, J.; Malicki, P.; Marczak, G. (Algebra and Discrete Mathematics, 2016)
  • Automorphisms of the endomorphism semigroup of a free commutative g-dimonoid 
    Zhuchok, Y.V. (Algebra and Discrete Mathematics, 2016)
    We determine all isomorphisms between the endomorphism semigroups of free commutative g-dimonoids and prove that all automorphisms of the endomorphism semigroup of a free commutative g-dimonoid are quasi-inner.

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