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Перегляд Algebra and Discrete Mathematics, 2008, Vol. 7 за назвою

Репозиторій DSpace/Manakin

Перегляд Algebra and Discrete Mathematics, 2008, Vol. 7 за назвою

Сортувати за: Порядок: Результатів:

  • Xiaojiang Guo; Shum, K.P. (Algebra and Discrete Mathematics, 2008)
    We consider Baer rings and Baer semisimple R-modules which are generalizations of semisimple modules. Several characterization theorems of Baer semisimple modules are obtained. In particular, we prove that a ring R is a ...
  • Protasov, I.V. (Algebra and Discrete Mathematics, 2008)
    A ballean (or a coarse structure) is a set endowed with some family of subsets which are called the balls. The properties of the family of balls are postulated in such a way that a ballean can be considered as an asymptotical ...
  • Jacobs, D.P.; Trevisan, V.; Rayers, M.O. (Algebra and Discrete Mathematics, 2008)
    Let Tn(x) be the degree-n Chebyshev polynomial of the first kind. It is known [1,13] that Tp(x)≡xpmodp, when p is an odd prime, and therefore, Tp(a)≡amodp for all a. Our main result is the characterization of composite ...
  • Laurincikas, A.; Macaitiene, R. (Algebra and Discrete Mathematics, 2008)
    A discrete limit theorem in the sense of weak convergence of probability measures in the space of meromorphic functions for the Estermann zeta-function with explicitly given the limit measure is proved.
  • Favorov, S.; Novikov, B.; Vyshnevetskiy, A.; Zholtkevich, G. (Algebra and Discrete Mathematics, 2008)
  • Pikuta, P. (Algebra and Discrete Mathematics, 2008)
    Let q be a prime power and k∈{5,7,9,11}. In this paper it is shown that the girth of a graph D(k,q) is equal to k+5. As a consequence, explicit examples of graphs which provide the best known upper bounds of the order of ...
  • Dokuchaev, M.A.; Kirichenko, V.V.; Novikov, B.V.; Plakhotnyk, M.V. (Algebra and Discrete Mathematics, 2008)
    We introduce the notion of a Gorenstein Latin square and consider loops and quasigroups related to them. We study some properties of normalized Gorenstein Latin squares and describe all of them with order n≤8.
  • Drozd, Y.A. (Algebra and Discrete Mathematics, 2008)
    We consider actions of groups on categories and bimodules, the related crossed group categories and bimodules, and prove for them analogues of the result know for representations of crossed group algebras and categories.
  • Pyekhtyeryev, V. (Algebra and Discrete Mathematics, 2008)
    We prove that every finite poset can be embedded in some idempotent D-cross-section of the finite inverse symmetric semigroup ISn.
  • Автор відсутній (Algebra and Discrete Mathematics, 2008)
    The Conference in Ring Theory dedicated to the 70th anniversary of Professor Miguel Ferrero was held from 25 to 27 of Sepetember of 2008 in Porto Alegre, Brazil
  • Kosakowska, J. (Algebra and Discrete Mathematics, 2008)
    We define and investigate Lie algebras associated with quadratic forms. We also present their connections with Lie algebras and Ringel-Hall algebras associated with representation directed algebras.
  • Автор відсутній (Algebra and Discrete Mathematics, 2008)
    Mathematics competition 2009 sponsored by Shevchenko Scientific Society (USA) and U.S.-Ukraine Foundation with the support of Ukrainian and Kyiv Mathematical Societies and hon. Roman Popadiuk – first U.S. ambassador to ...
  • Dokuchaev, M.; Kirichenko, V.; Paques, A.; Sant’Ana, A. (Algebra and Discrete Mathematics, 2008)
  • Автор відсутній (Algebra and Discrete Mathematics, 2008)
  • Zekovic, B. (Algebra and Discrete Mathematics, 2008)
    In the paper we study connections between (co)modules over n-ary and binary (co)algebras.
  • Safonov, V.G. (Algebra and Discrete Mathematics, 2008)
    It is proved that the lattice of τ-closed totally saturated formations of finite groups is distributive. This is a solution of Question 4.2.15 proposed by A. N. Skiba in his monograph "Algebra of Formations" (1997).
  • Bondarenko, I.; Grigorchuk, R.; Kravchenko, R.; Muntyan, Y.; Nekrashevych, V.; Savchuk, D.; Sunic, Z. (Algebra and Discrete Mathematics, 2008)
    We show that the class of groups generated by 3-state automata over a 2-letter alphabet has no more than 122 members. For each group in the class we provide some basic information, such as short relators, a few initial ...
  • Dashkova, O.Yu. (Algebra and Discrete Mathematics, 2008)
    The author investigates nonabelian locally soluble linear groups of infinite fundamental dimension and of infinite section p-rank all of whose proper nonabelian subgroups of infinite section p-rank are of finite fundamental ...
  • Bondarenko, V.M.; Tertychna, O.M. (Algebra and Discrete Mathematics, 2008)
    Let I be a finite set without 0 and J a subset in I×I without diagonal elements (i,i). We define S(I,J) to be the semigroup with generators ei, where i∈I∪0, and the following relations: e0=0; e2i=ei for any i∈I; eiej=0 ...
  • Hutsko, N.V.; Skiba, A.N. (Algebra and Discrete Mathematics, 2008)
    Let G be a finite group, H a subgroup of G and HsG the subgroup of H genarated by all those subgroups of H which are s-permutable in G. Then we say that H is well p-embedded in G if G has a quasinormal subgroup T such ...

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