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Перегляд Відділення математики за назвою

Репозиторій DSpace/Manakin

Перегляд Відділення математики за назвою

Сортувати за: Порядок: Результатів:

  • u-Deformed WZW model and its gauging 
    Klimčík, C. (Symmetry, Integrability and Geometry: Methods and Applications, 2006)
    We review the description of a particular deformation of the WZW model. The resulting theory exhibits a Poisson-Lie symmetry with a non-Abelian cosymmetry group and can be vectorially gauged.
  • Ultradiscrete Painlevé VI with Parity Variables 
    Takemura, K.; Tsutsui, T. (Symmetry, Integrability and Geometry: Methods and Applications, 2013)
    We introduce a ultradiscretization with parity variables of the q-difference Painlevé VI system of equations. We show that ultradiscrete limit of Riccati-type solutions of q-Painlevé VI satisfies the ultradiscrete Painlevé ...
  • Ultradiscrete sine-Gordon Equation over Symmetrized Max-Plus Algebra, and Noncommutative Discrete and Ultradiscrete sine-Gordon Equations 
    Kondo, K. (Symmetry, Integrability and Geometry: Methods and Applications, 2013)
    Ultradiscretization with negative values is a long-standing problem and several attempts have been made to solve it. Among others, we focus on the symmetrized max-plus algebra, with which we ultradiscretize the discrete ...
  • Ultrafilters on balleans 
    Protasov, I.V.; Slobodianiuk, S.V. (Український математичний журнал, 2015)
    A ballean (equivalently, a coarse structure) is an asymptotic counterpart of a uniform space. We introduce three ultrafilter satellites of a ballean (namely, corona, companion, and corona companion), evaluate the basic ...
  • Ultrafilters on G-spaces 
    Petrenko, O.V.; Protasov, I.V. (Algebra and Discrete Mathematics, 2015)
    For a discrete group G and a discrete G-space X, we identify the Stone-Cech compactifications βG and βX with the sets of all ultrafilters on G and X, and apply the natural action of βG on βX to characterize large, thick, ...
  • Uncountably many 2-generated just-infinite branch pro-2 groups 
    Benli, M.G.; Grigorchuk, R. (Algebra and Discrete Mathematics, 2015)
    The aim of this note is to prove that there are 2ℵ0 non-isomorphic 2 generated just-infinite branch pro-2 groups.
  • Uncountably many non-isomorphic nilpotent real n-Lie algebras 
    Stitzinger, E.; Williams, M.P. (Algebra and Discrete Mathematics, 2006)
    There are an uncountable number of non-isomorphic nilpotent real Lie algebras for every dimension greater than or equal to 7. We extend an old technique, which applies to Lie algebras of dimension greater than or equal ...
  • Unidirectional synchronization of two multiscroll chaotic systems using nonlinear control technique 
    Razminia, A. (Нелінійні коливання, 2013)
    The dynamics of nonlinear systems and especially chaotic ones have attracted increasing attention in recent years. In this paper, we consider a new chaotic system that recently introduced in the literature. This system ...
  • Unified Gauge Theories and Reduction of Couplings: from Finiteness to Fuzzy Extra Dimensions 
    Mondragón, M.; Zoupanos, G. (Symmetry, Integrability and Geometry: Methods and Applications, 2008)
    Finite Unified Theories (FUTs) are N = 1 supersymmetric Grand Unified Theories, which can be made all-loop finite, both in the dimensionless (gauge and Yukawa couplings) and dimensionful (soft supersymmetry breaking terms) ...
  • Uniform Asymptotic Expansion for the Incomplete Beta Function 
    Nemes, G.; Olde Daalhuis, A.B. (Symmetry, Integrability and Geometry: Methods and Applications, 2016)
    In [Temme N.M., Special functions. An introduction to the classical functions of mathematical physics, A Wiley-Interscience Publication, John Wiley & Sons, Inc., New York, 1996, Section 11.3.3.1] a uniform asymptotic ...
  • Uniform Asymptotics of Orthogonal Polynomials Arising from Coherent States 
    Dai, D.; Hu, W.; Wang, X.S. (Symmetry, Integrability and Geometry: Methods and Applications, 2015)
    In this paper, we study a family of orthogonal polynomials {ϕn(z)} arising from nonlinear coherent states in quantum optics. Based on the three-term recurrence relation only, we obtain a uniform asymptotic expansion of ...
  • Uniform ball structures 
    Protasov, I.V. (Algebra and Discrete Mathematics, 2003)
    A ball structure is a triple B = (X, P, B), where X, P are nonempty sets and, for all x ∈ X, α ∈ P, B(x, α) is a subset of X, x ∈ B(x, α), which is called a ball of radius α around x. We introduce the class of uniform ...
  • Uniform ball structures 
    Protasov, I.V. (Algebra and Discrete Mathematics, 2003)
    A ball structure is a triple B = (X, P, B), where X, P are nonempty sets and, for all x ∈ X, α ∈ P, B(x, α) is a subset of X, x ∈ B(x, α), which is called a ball of radius α around x. We introduce the class of uniform ...
  • Uniformly 2-absorbing primary ideals of commutative rings 
    Mostafanasab, H.; Tekir, Ü.; Ulucak, G. (Algebra and Discrete Mathematics, 2020)
    In this study, we introduce the concept of “uniformly 2-absorbing primary ideals” of commutative rings, which imposes a certain boundedness condition on the usual notion of 2-absorbing primary ideals of commutative rings. ...
  • Unimodality polynomials and generalized Pascal triangles 
    Ahmia, M.; Belbachir, H. (Algebra and Discrete Mathematics, 2018)
    This paper is an extension of Boros and Moll’s result “A criterion for unimodality”, who proved that the polynomial P(x + 1) is unimodal.
  • Uniqueness and topological properties of number representation 
    Dovgoshey, O.; Martio, O.; Ryazanov, V.; Vuorinen, M. (Український математичний вісник, 2004)
    Let b be a complex number with |b| > 1 and let D be a finite subset of the complex plane C such that 0 ∊ D and card D ≥ 2. A number z is representable by the system (D, b) if z = Σajbj , where aj ∊ D. We denote by F the ...
  • Uniqueness in law of solutions of stochastic differential inclusions 
    Lepeyev, A.N. (2007)
    The paper deals with one-dimensional homogeneous stochastic differential inclusions without drift with Borel measurable mapping at the right side. We give the conditions for uniqueness in law and existence of unique in law ...
  • Uniqueness of approximate solutions of the Beltrami equations 
    Kolomoitsev, Yu.S.; Ryazanov, V.I. (Труды Института прикладной математики и механики, 2009)
    We introduce a notion of an approximate solution to the Beltrami equations, obtain some properties of such solutions and show that the approximate solution is unique up to pre-composition with a conformal mapping.
  • Uniqueness of solutions of impulsive hyperbolic differential-functional equations 
    Janiszewska-Walczak, D. (Український математичний журнал, 1999)
    For impulsive partial differential-functional equations, we prove the theorems on existence and uniqueness of solutions and their continuous dependence on the right-hand sides of the equations.
  • Uniqueness of Solutions of Some Nonlocal Boundary-Value Problems for Operator-Differential Equations on a Finite Segment 
    Radzievskii, G.V. (Український математичний журнал, 2003)
    For the equation L₀x(t) + L₁x⁽¹⁾(t) + ... + Lnx⁽ⁿ⁾(t) = 0, where Lk, k = 0, 1, ... , n, are operators acting in a Banach space, we formulate conditions under which a solution x(t) that satisfies some nonlocal homogeneous ...

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