Наукова електронна бібліотека
періодичних видань НАН України

Перегляд Український математичний журнал за назвою

Репозиторій DSpace/Manakin

Перегляд Український математичний журнал за назвою

Сортувати за: Порядок: Результатів:

  • q-Apostol–Euler Polynomials and q-Alternating Sums 
    Luo, Q.-M. (Український математичний журнал, 2013)
    Basic properties are established and generating functions are obtained for the q -Apostol–Euler polynomials. We define q -alternating sums and obtain q -extensions of some formulas from Integral Transform. Spectr. Funct., ...
  • Q -permutable subgroups of finite groups 
    Pu, Zh.; Miao, L. (Український математичний журнал, 2011)
    A subgroup H of a group G is called Q-permutable in G if there exists a subgroup B of G such that (1) G=HB and (2) if H1 is a maximal subgroup of H containing HQG, then H1B=BH1<G, where HQG is the largest permutable subgroup ...
  • QR-алгоритм и обобщенные потоки Тода 
    Файбусович, Л.Е. (Український математичний журнал, 1989)
    Рассмотрено асимптотическое поведение решений класса динамических систем — обобщенных потоков Тода. Указана связь с асимптотическим поведением решений матричных дифференциальных уравнений Риккати на граесмановом многообразии.
  • Quantitative convergence theorems for a class of Bernstein–Durrmeyer operators preserving linear functions 
    Gonska, H.; Peltenia, R. (Український математичний журнал, 2010)
    We supplement recent results on a class of Bernstein–Durrmeyer operators preserving linear functions. This is done by discussing two limiting cases and proving quantitative Voronovskaya-type assertions involving the ...
  • Quantum-Classical Wigner-Liouville Equation 
    Kapral, R.; Sergi, A. (Український математичний журнал, 2005)
    We consider a quantum system that is partitioned into a subsystem and a bath. Starting from the Wigner transform of the von Neumann equation for the quantum-mechanical density matrix of the entire system, the quantum-classical ...
  • Quasi-Frobenius Rings and Nakayama Permutations of Semiperfect Rings 
    Dokuchaev, M.A.; Kirichenko, V.V. (Український математичний журнал, 2002)
    We say that A is a ring with duality for simple modules, or simply a DSM-ring, if, for every simple right (left) A-module U, the dual module U* is a simple left (right) A-module. We prove that a semiperfect ring is a ...
  • Quasi-unit regularity and QB-rings 
    Jianghua Li; Xiaoqing Sun; Xiaoqin Shen; Shangping Wang (Український математичний журнал, 2012)
    Some relations for quasiunit regular rings and QB-rings, as well as for pseudounit regular rings and QB ∞-rings, are obtained. In the first part of the paper, we prove that (an exchange ring R is a QB-ring) ⟺ (whenever x ...
  • Q-умовна симетрія нелінійного двовимірного рівняння теплопровідності 
    Сєров, М.І.; Тулупова, Л.О.; Андреєва, Н.В. (Український математичний журнал, 2000)
    Досліджено Q -умовну симетрію нелінійного двовимірного рівняння теплопровідності. За допомогою анзаців одержано редуковані рівняння.
  • Rank formulae for factorized groups 
    Amberg, B.; Franciosi, S.; De Giovanni, F. (Український математичний журнал, 1991)
  • Rate of convergence for Szász-Bézier operators 
    Gupta Vijay (Український математичний журнал, 2005)
    We estimate the rate of convergence for functions of bounded variation for the Bezier variant of the Szasz operators Sₙ,ₐ(f,x). We study the rate of convergence of Sₙ,ₐ(f,x) for the case 0 < α < 1.
  • R-D-системы и ветвящиеся процессы Иржины 
    Сафарян, Р.Г. (Український математичний журнал, 1991)
    Для параболического уравнения, содержащего нелинейную часть специального вида, строится вероятностное представление решения в виде математического ожидания некоторого функционала от траекторий ветвящегося процесса с ...
  • Recognition of the groups L₅(4) and U₄(4) by the prime graph 
    Nosratpour, P.; Darafsheh, M.R. (Український математичний журнал, 2012)
    Let G be a finite group. The prime graph of G is the graph Γ(G) whose set of vertices is the set Π(G) of all prime divisors of the order |G| and two different vertices p and q of which are connected by an edge if G has an ...
  • Reduction of the self-dual Yang-Mills equations. I. The Poincaré group 
    Zhdanov, R.Z.; Lahno, V.I.; Fushchych, W.I. (Український математичний журнал, 1995)
    For the vector potential of the Yang-Mills field, we give a complete description of ansatzes invariant under three-parameterP (1, 3) -inequivalent subgroups of the Poincaré group. By using these ansatzes, we reduce the ...
  • Re-extending Chebyshev’s theorem about Bertrand’s conjecture 
    Shams, Armіn (Український математичний журнал, 2007)
    In this paper, Chebyshev’s theorem (1850) about Bertrand’s conjecture is re-extended using a theorem about Sierpinski’s conjecture (1958). The theorem had been extended before several times, but this extension is a major ...
  • Regularity of nonlinear flows on noncompact Riemannian manifolds: Differential geometry versus stochastic geometry or what kind of variations is natural? 
    Antoniouk, A.Val.; Antoniouk, Vict. (Український математичний журнал, 2006)
    It is shown that the geometrically correct investigation of regularity of nonlinear differential flows on manifolds and related parabolic equations requires the introduction of a new type of variations with respect to the ...
  • Regularity results for Kolmogorov equations in L²(H, μ) spaces and applications 
    Da Prato, G. (Український математичний журнал, 1997)
    We consider the transition semigroup Rt =e tsA associated to an Ornstein—Uhlenbeck process in a Hilbert space H. We characterize, under suitable assumptions, the domain of A as a subspace W²,²(H, μ), where μ is the invariant ...
  • Regularized brownian motion on the Siegel disk of infinite dimension 
    Airault, H.; Malliavin, P. (Український математичний журнал, 2000)
    We construct a process of Brownian motion on the Siegel disk of infinite dimension.
  • Relative Extensions of Modules and Homology Groups 
    Lixin Mao; Haiyan Zhu (Український математичний журнал, 2015)
    We introduce the concepts of relative (co)extensions of modules and explore the relationship between the relative (co)extensions of modules and relative (co)homology groups. Some applications are given.
  • Relatively thin and sparse subsets of groups 
    Lutsenko, Ie.; Protasov, I.V. (Український математичний журнал, 2011)
    Let G be a group with identity e and let I be a left-invariant ideal in the Boolean algebra PG of all subsets of G. A subset A of G is called I-thin if gA⋂A∈I for every g∈G {e}. A subset A of G is called I-sparse if, for ...
  • Remainders of semitopological groups or paratopological groups 
    Lin, Fucai; Liu, Chuan; Xie, Li-Hong (Український математичний журнал, 2014)
    We mainly discuss the remainders of Hausdorff compactifications of paratopological groups or semitopological groups. Thus, we show that if a nonlocally compact semitopological group G has a compactification bG such that ...

Пошук


Розширений пошук

Перегляд

Мій обліковий запис