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Перегляд Відділення математики за назвою

Репозиторій DSpace/Manakin

Перегляд Відділення математики за назвою

Сортувати за: Порядок: Результатів:

  • Basic semigroups: theory and applications 
    Ponizovskii, J.S. (Algebra and Discrete Mathematics, 2004)
    A concept of basic matrix semigroups over fields (with some variations) is introduced and throughly investigated. Sections 1 and 2 contain main definitions, Section 3 treats some properties of basic semigroups, Section ...
  • BBGKY hierarchy and its evolution operator for one class of integrable systems 
    Skrypnik, W.I. (Український математичний журнал, 1995)
    We define the abstract BBGKY hierarchy and its formal evolution operator. The existence of the latter is established in a special Banach space for a system of charged particles with Chern-Simons interaction regularized for ...
  • BCS Model Hamiltonian of the Theory of Superconductivity as a Quadratic Form 
    Petrina, D.Ya. (Український математичний журнал, 2004)
    Bogolyubov proved that the average energies (per unit volume) of the ground states for the BCS Hamiltonian and the approximating Hamiltonian asymptotically coincide in the thermodynamic limit. In the present paper, we show ...
  • Beables/Observables in Classical and Quantum Gravity 
    Anderson, E. (Symmetry, Integrability and Geometry: Methods and Applications, 2014)
    Observables 'are observed' whereas beables just 'are'. This gives beables more scope in the cosmological and quantum domains. Both observables and beables are entities that form 'brackets' with 'the constraints' that are ...
  • Behavior of solutions of differential equations with deviating argument 
    Hormozi, M. (Український математичний журнал, 2012)
    We give a necessary and sufficient condition for the inclusion of ΛBV (p) in the classes Hq ω.
  • Behavior of solutions of second order differential equations with sublinear damping 
    Karsai, J.; Graef, J.R. (Нелінійні коливання, 2005)
  • Bernstein-Type Theorems and Uniqueness Theorems 
    Logvinenko, V.; Nazarova, N. (Український математичний журнал, 2004)
    Let f be an entire function of finite type with respect to finite order ρ in Cⁿ and let E be a subset of an open cone in a certain n-dimensional subspace R²ⁿ ( = Cⁿ) (the smaller ρ , the sparser E ). We assume that this ...
  • Bernstein-Walsh type inequalities in unbounded regions with piecewise asymptotically conformal curve in the weighted Lebesgue space 
    Imashkyzy, M.; Abdullayev, G.A.; Abdullayev, F.G. (Український математичний вісник, 2017)
    In this work, we obtain pointwise Bernstein–Walsh-type estimation for algebraic polynomials in the unbounded regions with piecewise asymptotically conformal boundary, having exterior and interior zero angles, in the weighted ...
  • Besov-Type Spaces on Rd and Integrability for the Dunkl Transform 
    Abdelkefi, C.; Sassi, F.; Sifi, M.; Anker, Jean-Philippe (Symmetry, Integrability and Geometry: Methods and Applications, 2009)
    In this paper, we show the inclusion and the density of the Schwartz space in Besov-Dunkl spaces and we prove an interpolation formula for these spaces by the real method. We give another characterization for these spaces ...
  • Best approximation by ridge functions in Lp-spaces 
    Maiorov, V.E. (Український математичний журнал, 2010)
  • Bethe Ansatz for the Ruijsenaars Model of BC₁-Type 
    Chalykh, O. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    We consider one-dimensional elliptic Ruijsenaars model of type BC₁. It is given by a three-term difference Schrödinger operator L containing 8 coupling constants. We show that when all coupling constants are integers, L ...
  • Bethe Ansatz, Inverse Scattering Transform and Tropical Riemann Theta Function in a Periodic Soliton Cellular Automaton for An⁽¹⁾ 
    Kuniba, A.; Takagi, T. (Symmetry, Integrability and Geometry: Methods and Applications, 2010)
    We study an integrable vertex model with a periodic boundary condition associated with Uq(An⁽¹⁾ at the crystallizing point q=0. It is an (n+1)-state cellular automaton describing the factorized scattering of solitons. The ...
  • Bethe ansatz solutions of the Bose-Hubbard dimer 
    Links, J.; Hibberd, K.E. (Symmetry, Integrability and Geometry: Methods and Applications, 2006)
    The Bose-Hubbard dimer Hamiltonian is a simple yet effective model for describing tunneling phenomena of Bose-Einstein condensates. One of the significant mathematical properties of the model is that it can be exactly ...
  • Bethe Ansatz Solutions to Quasi Exactly Solvable Difference Equations 
    Sasaki, Ryu; Yang, Wen-Li; Zhang, Yao-Zhong (Symmetry, Integrability and Geometry: Methods and Applications, 2009)
    Bethe ansatz formulation is presented for several explicit examples of quasi exactly solvable difference equations of one degree of freedom which are introduced recently by one of the present authors. These equations are ...
  • Bethe Vectors for Composite Models with gl(2|1) and gl(1|2) Supersymmetry 
    Fuksa, J. (Symmetry, Integrability and Geometry: Methods and Applications, 2017)
    Supersymmetric composite generalized quantum integrable models solvable by the algebraic Bethe ansatz are studied. Using a coproduct in the bialgebra of monodromy matrix elements and their action on Bethe vectors, formulas ...
  • Bethe Vectors of Quantum Integrable Models with GL(3) Trigonometric R-Matrix 
    Belliard, S.; Pakuliak, S.; Ragoucy, E.; Slavnov, N.A. (Symmetry, Integrability and Geometry: Methods and Applications, 2013)
    We study quantum integrable models with GL(3) trigonometric R-matrix and solvable by the nested algebraic Bethe ansatz. Using the presentation of the universal Bethe vectors in terms of projections of products of the ...
  • Beyond the Gaussian 
    Fujii, K. (Symmetry, Integrability and Geometry: Methods and Applications, 2011)
    In this paper we present a non-Gaussian integral based on a cubic polynomial, instead of a quadratic, and give a fundamental formula in terms of its discriminant. It gives a mathematical reinforcement to the recent result ...
  • Bias control in the estimation of spectral functionals 
    Sakhno, L. (2007)
    We consider estimators for integrals of a spectrum and a bispectrum for random fields X(t), t belongs R^d, and present conditions guaranteeing the rate of convergence of bias to zero appropriate for dimensions d = 1, 2, 3.
  • Bicomplex number and tensor product surfaces in R⁴₂ 
    Karakuş, S.Ö.; Yayli, Y. (Український математичний журнал, 2012)
    We show that a hyperquadric M in R⁴₂ is a Lie group by using the bicomplex number product. For our purpose, we change the definition of tensor product. We define a new tensor product by considering the tensor product surface ...
  • Bicrossed Products, Matched Pair Deformations and the Factorization Index for Lie Algebras 
    Agore, A.L.; Militaru, G. (Symmetry, Integrability and Geometry: Methods and Applications, 2014)
    For a perfect Lie algebra h we classify all Lie algebras containing h as a subalgebra of codimension 1. The automorphism groups of such Lie algebras are fully determined as subgroups of the semidirect product h⋉(k∗×AutLie(h)). ...

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