Перегляд за назвою

Сортувати за: Порядок: Результатів:

  • On split metacyclic groups 
    He-guo Liu; Yan Yang (Український математичний журнал, 2012)
    We consider sufficient conditions for metacyclic groups to split. Specifically, we show that a finite metacyclic group G of odd order is split on its cyclic normal subgroup K if K is such that G/K is cyclic and |K| = exp G.
  • On square-Hamiltonian graphs 
    Protasova, K.D. (Algebra and Discrete Mathematics, 2005)
    A finite connected graph G is called squareHamiltonian if G² is Hamiltonian. We prove that any join of the family of Hamiltonian graphs by tree is square-Hamiltonian. Applying this statement we show that the line graph ...
  • On S-quasinormally embedded subgroups of finite groups 
    Al-Sharo, Kh.A.; Shemetkova, O.; Xiaolan Yi (Algebra and Discrete Mathematics, 2012)
    Let G be a finite group. A subgroup A is called:1) S-quasinormal in G if A is permutable with all Sylow subgroups in G 2) S-quasinormally embedded in G if every Sylow subgroup of A is a Sylow subgroup of some S-quasinormal ...
  • On ss-quasinormal and weakly s-supplemented subgroups of finite groups 
    Li, C.; Li, Y. (Український математичний журнал, 2011)
    Suppose that G is a finite group and H is a subgroup of G. H is called ss-quasinormal in G if there is a subgroup B of G such that G=HB and H permutes with every Sylow subgroup of B; H is called weakly s-supplemented in G ...
  • On Stability and Stabilization of Perturbed Time Scale Systems with Gronwall Inequalities 
    Ben Nasser, B.; Boukerrioua, K.; Hammami, M.A. (Журнал математической физики, анализа, геометрии, 2015)
    In the paper, new nonlinear time scale integral inequalities are given. By means of the explicit integral bounds, we derive suffcient conditions for the uniform asymptotic stability of perturbed systems on time scales. In ...
  • On stability of a nonlinear pendulum 
    Kengne, E. (Нелінійні коливання, 2003)
    Методом Ляпунова знайдено достатню умову стiйкостi руху нелiнiйного маятника.
  • On Stability of a Unit Ball in Minkowski Space with Respect to Self-Area 
    Shcherba, A.I. (Журнал математической физики, анализа, геометрии, 2011)
    The author expresses his sincere gratitude to V.I. Diskant for his useful discussions of the considered problem.
  • On Stability of Parametrically Excited Linear Stochastic Systems. 
    Labou, М. (Прикладная механика, 2010)
    The dynamic stability of a coupled two-degrees-of-freedom system subjected to parametric excitation by a harmonic action superimposed by an ergodic stochastic process is investigated. For the stability analysis, the ...
  • On Stability of Polynomially Bounded Operators 
    Muraz, G.; Quoc Phong Vu (Журнал математической физики, анализа, геометрии, 2007)
    We prove that if T is a polynomially bounded operator and the peripheral spectrum of T has zero measure, then Tⁿx → 0 for all x in X if and only if T* has no nontrivial invariant subspace on which it is invertible and ...
  • On Stability of the Cauchy Equation on Solvable Groups 
    Faiziev, V.A.; Sahoo, P.K. (Український математичний журнал, 2015)
    The notion of (ψ, γ)-stability was introduced in [V. A. Faiziev, Th. M. Rassias, and P. K. Sahoo, Trans. Amer. Math. Soc., 354, 4455 (2002)]. It was shown that the Cauchy equation f(xy) = f(x) + f(y) is (ψ, γ)-stable both ...
  • On stability of the Hill's equation with damping 
    Cattani, C.; Grebenikov, E.A.; Prokopenya, A.N. (Нелінійні коливання, 2004)
    We consider the Hill’s equation with damping describing the parametric oscillations of the torsional pendulum excited by means of varying the moment of inertia of the rotating body. Using the method of a small parameter ...
  • On stabilization of solutions of the cauchy problem for parabolic equations on the nets 
    Denisov, V. (Нелинейные граничные задачи, 2000)
    This work was supported by Russian Grant no. 99-01-00072.
  • On Stabilization Problem for Nonlinear Systems with Power Principal Part 
    Bebiya, M.O.; Korobov, V.I. (Журнал математической физики, анализа, геометрии, 2016)
    In the present paper, the stabilization problem for the uncontrollable with respect to the first approximation nonlinear system with power principal part is solved. A class of stabilizing controls for the nonlinear ...
  • On stable finiteness of group rings 
    Dykema, K.; Juschenko, K. (Algebra and Discrete Mathematics, 2015)
    For an arbitrary field or division ring K and an arbitrary group G, stable finiteness of K[G] is equivalent to direct finiteness of K[G×H] for all finite groups H.
  • On Standards for Mechanical Testing of Materials at Cryogenic Temperatures 
    Novogrudskii, L.S.; Strizhalo, V.A. (Проблемы прочности, 2010)
    Рассмотрены и проанализированы основные положения стандартов АSТМ, ISO и ГОСТ, которые регламентируют метод испытаний металлов на растяжение при температуре жидкого гелия. Определены основные факторы, обусловливающие ...
  • On statistical convergence of vector-valued sequences associated with multiplier sequences 
    Altinok, H.; Et, M.; Gökhan, A. (Український математичний журнал, 2006)
  • On statistical distributions of wide binary stars 
    Chulkov, D.A.; Trushin, D.I. (Advances in Astronomy and Space Physics, 2012)
    The semi-major axis is a key parameter of binary stellar systems. In order to obtain current semi-major axis distribution we investigated a volume-limited sample of the binaries in solar neighbourhood. Obtained distribution ...
  • On statistical mechanics in noncommutative spaces 
    Alavi, S.A. (Вопросы атомной науки и техники, 2007)
    We study the formulation of quantum statistical mechanics in noncommutative spaces. We construct microcanonical and canonical ensemble theory in noncommutative spaces and study some basic and important examples in the ...
  • On stochastic differential inclusions with unbounded right sides 
    Lepeyev, A.N. (2006)
    The paper deals with one-dimensional homogeneous stochastic differential inclusions without drift with a Borel measurable right side. Using a new method of explicit solutions, the necessary and sufficient conditions for ...
  • On Stone sublattices of the lattice of totally local Fitting classes 
    Skiba, A.N.; Vorob’ev, N.N. (Algebra and Discrete Mathematics, 2007)
    Totally local Fitting classes with a Stone lattice of totally local Fitting subclasses are described.