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Перегляд Відділення математики за назвою

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Перегляд Відділення математики за назвою

Сортувати за: Порядок: Результатів:

  • Effective ring 
    Zabavsky, B.V.; Kuznitska, B.M. (Algebra and Discrete Mathematics, 2014)
    In this paper we will investigate commutative Bezout domains whose finite homomorphic images are semipotent rings. Among such commutative Bezout rings we consider a new class of rings and call them an effective rings. ...
  • Effects of a Maximal Energy Scale in Thermodynamics for Photon Gas and Construction of Path Integral 
    Das, S.; Pramanik, S.; Ghosh, S. (Symmetry, Integrability and Geometry: Methods and Applications, 2014)
    In this article, we discuss some well-known theoretical models where an observer-independent energy scale or a length scale is present. The presence of this invariant scale necessarily deforms the Lorentz symmetry. We study ...
  • Effects of Quark Interactions on Dynamical Chiral Symmetry Breaking by a Magnetic Field 
    Hiller, B.; Osipov, A.A.; Blin, A.H.; Providência, João da (Symmetry, Integrability and Geometry: Methods and Applications, 2008)
    It is shown how the strong interaction dynamics of a multi-quark Lagrangian affects the catalysis of dynamical symmetry breaking by a constant magnetic field in (3+1) dimensions. Attention is drawn to the local minima ...
  • Efficiency comparison of two consistent estimators in nonlinear regression model with small measurement errors 
    Malenko, A. (2007)
    We study a nonlinear measurement model where the response variable has a density belonging to the exponential family. We consider two consistent estimators: Corrected Score (CS) and Quasi Score (QS) ones. Their relative ...
  • Eigenfunction Expansions of Functions Describing Systems with Symmetries 
    Kachuryk, I.; Klimyk, A. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    Physical systems with symmetries are described by functions containing kinematical and dynamical parts. We consider the case when kinematical symmetries are described by a noncompact semisimple real Lie group G. Then ...
  • Eigenvalue characterization of a system of difference equations 
    Agarwal, R.P.; O'Regan, D.; P. J. Y. Wong (Нелінійні коливання, 2004)
    We consider the following system of difference equations: ui(k) = λ∑gi(k, l)Pi(l, u1(l), u2(l), . . . , un(l)), k ∈ {0, 1, . . . }, 1 ≤ i ≤ n, where λ > 0 and T ≥ N ≥ 0. Our aim is to determine those values of λ such ...
  • Eigenvalue Estimates of the spinc Dirac Operator and Harmonic Forms on Kähler-Einstein Manifolds 
    Nakad, R.; Pilca, M. (Symmetry, Integrability and Geometry: Methods and Applications, 2015)
    We establish a lower bound for the eigenvalues of the Dirac operator defined on a compact Kähler-Einstein manifold of positive scalar curvature and endowed with particular spinc structures. The limiting case is characterized ...
  • Eigenvalues of Killing Tensors and Separable Webs on Riemannian and Pseudo-Riemannian Manifolds 
    Chanu, C.; Rastelli, G. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    Given a n-dimensional Riemannian manifold of arbitrary signature, we illustrate an algebraic method for constructing the coordinate webs separating the geodesic Hamilton-Jacobi equation by means of the eigenvalues of m ≤ ...
  • Eigenvectors of Open Bazhanov-Stroganov Quantum Chain 
    Iorgov, N. (Symmetry, Integrability and Geometry: Methods and Applications, 2006)
    In this contribution we give an explicit formula for the eigenvectors of Hamiltonians of open Bazhanov-Stroganov quantum chain. The Hamiltonians of this quantum chain is defined by the generation polynomial An(λ) which is ...
  • Einstein Gravity, Lagrange-Finsler Geometry, and Nonsymmetric Metrics 
    Vacaru, S.I. (Symmetry, Integrability and Geometry: Methods and Applications, 2008)
    We formulate an approach to the geometry of Riemann-Cartan spaces provided with nonholonomic distributions defined by generic off-diagonal and nonsymmetric metrics inducing effective nonlinear and affine connections. Such ...
  • Einstein-Riemann gravity on deformed spaces 
    Wess, J. (Symmetry, Integrability and Geometry: Methods and Applications, 2006)
    A differential calculus, differential geometry and the E-R Gravity theory are studied on noncommutative spaces. Noncommutativity is formulated in the star product formalism. The basis for the gravity theory is the infinitesimal ...
  • Elastic buckling and optimization of asymmetric i-cross sections of cold-formed thin-walled beams 
    Magnucki, K.; Ostwald, M. (Фізико-математичне моделювання та інформаційні технології, 2006)
    Subject of the paper includes two open asymmetric I-cross sections of cold-formed thin-walled beams. The both beams are simply supported and are subjects to pure bending. Every I-section is separately described by dimensionless ...
  • Elastic buckling of selected flanges of cold-formed thin-walled beams 
    Magnucki, K. (Фізико-математичне моделювання та інформаційні технології, 2006)
    The paper is devoted to five different flanges of cold-formed thin-walled beams. Mathematical models of each of the flanges are formulated and solved. The theory of elastic stability of plates and cylindrical shallow shells ...
  • Electroweak Interaction Model with an Undegenerate Double Symmetry 
    Slad, L.M. (Symmetry, Integrability and Geometry: Methods and Applications, 2006)
    The initial P-invariance of the electroweak interaction Lagrangian together with the low-energy results of the Weinberg-Salam model is provided by a local secondary symmetry. Among the transformation parameters of this ...
  • Elementary reduction of matrices over rings of almost stable range 1 
    Zabavsky, B.; Romaniv, A.; Kysil, T. (Algebra and Discrete Mathematics, 2020)
    In this paper we consider elementary reduction of matrices over rings of almost stable range 1.
  • Elementary Representations of the Group B₀Z of Upper-Triangular Matrices Infinite in Both Directions. I 
    Kosyak, O.V. (Український математичний журнал, 2002)
    We define so-called “elementary representations of the group B₀Z of finite upper-triangular matrices infinite in both directions by using quasi-invariant measures on certain homogeneous spaces and give a criterion for the ...
  • Elements of a non-Gaussian analysis on the spaces of functions of infinitely many variables 
    Kachanovsky, N.A. (Український математичний журнал, 2010)
    We present a review of some results of the non-Gaussian analysis in the biorthogonal approach and consider elements of the analysis associated with the generalized Meixner measure. The main objects of our interest are ...
  • Elliptic Biorthogonal Polynomials Connected with Hermite's Continued Fraction 
    Vinet, L.; Zhedanov, A. (Symmetry, Integrability and Geometry: Methods and Applications, 2007)
    We study a family of the Laurent biorthogonal polynomials arising from the Hermite continued fraction for a ratio of two complete elliptic integrals. Recurrence coefficients, explicit expression and the weight function for ...
  • Elliptic Boundary-Value Problems in the Sense of Lawruk on Sobolev and Hörmander Spaces 
    Murach, A.A.; Chepurukhina, I.S. (Український математичний журнал, 2015)
    We study elliptic boundary-value problems with additional unknown functions in boundary conditions. These problems were introduced by Lawruk. We prove that the operator corresponding to a problem of this kind is bounded ...
  • Elliptic Determinantal Processes and Elliptic Dyson Models 
    Katori, M. (Symmetry, Integrability and Geometry: Methods and Applications, 2017)
    We introduce seven families of stochastic systems of interacting particles in one-dimension corresponding to the seven families of irreducible reduced affine root systems. We prove that they are determinantal in the sense ...

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