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Перегляд Журнал математической физики, анализа, геометрии, 2009 (том 5) за датою випуску

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Перегляд Журнал математической физики, анализа, геометрии, 2009 (том 5) за датою випуску

Сортувати за: Порядок: Результатів:

  • Multi-Term Asymptotic Representations of the Riesz Measure of Subharmonic Functions in the Plane 
    Agranovich, P. (Журнал математической физики, анализа, геометрии, 2009)
    In the paper, a multi-term asymptotic representation for distribution function of the Riesz measure of subharmonic function in the plane is considered. It is shown that the "smallness" of the reminder term of asymptotic ...
  • Retroreflecting Curves in Nonstandard Analysis 
    Almeida, R.; Neves, V.; Plakhov, A. (Журнал математической физики, анализа, геометрии, 2009)
    We present a direct construction of retroreflecting curves by means of Nonstandard Analysis. We construct non self-intersecting curves which are of class C¹, except for a hyper-finite set of values, such that the probability ...
  • Geometric Constructions in the Class of Busemann Nonpositively Curved Spaces 
    Andreev, P.D. (Журнал математической физики, анализа, геометрии, 2009)
    The procedures of gluing and the Hausdorff limit in the class of metric spaces nonpositively curved in the sense of Busemann are studied in the paper. Conditions under which the resulting spaces belong to the same class are found.
  • Interaction between "Accelerating-Packing" Flows in a Low-Temperature Gas 
    Gordevskyy, V.D.; Andriyasheva, N.V. (Журнал математической физики, анализа, геометрии, 2009)
    The Maxwellians of a special type, which correspond to inhomogeneous, nonstationary flows and describe the acceleration and packing of gas along some direction, are studied. The approximate description of interaction between ...
  • On the Limit of Regular Dissipative and Self-Adjoint Boundary Value Problems with Nonseparated Boundary Conditions when an Interval Stretches to the Semiaxis 
    Khrabustovskyi, V.I. (Журнал математической физики, анализа, геометрии, 2009)
    For the symmetric differential system of the first order that contains a spectral parameter in Nevanlinna's manner the limit of regular boundary value problems with dissipative or accumulative nonseparated boundary conditions ...
  • Simple Periodic Boundary Data and Riemann-Hilbert Problem for Integrable Model of the Stimulated Raman Scattering 
    Moskovchenko, E.A. (Журнал математической физики, анализа, геометрии, 2009)
    We consider the initial-boundary value (IBV) problem for nonlinear equations related to the integrable model of the stimulated Raman scattering in the quarter xt-plane with vanishing at infinity initial conditions and ...
  • Памяти Анатолия Асировича Гольдберга 
    Автор відсутній (Журнал математической физики, анализа, геометрии, 2009)
    11 октября 2008 года в Израиле, в городе Нетания, скончался Анатолий Асирович Гольдберг, замечательный математик и человек.
  • On Convergence of Solutions of Singularly Perturbed Boundary-Value Problems 
    Anoshchenko, O.; Lysenko, O.; Khruslov, E. (Журнал математической физики, анализа, геометрии, 2009)
    A perturbation of the Poisson equation by a biharmonic operator with a small multiplier ε is considered. The asymptotic behavior of the solution of the Dirichlet problem for this equation as ε → 0 is studied. The gradient ...
  • On Linear Relations Generated by Nonnegative Operator Function and Degenerate Elliptic Differential-Operator Expression 
    Bruk, V.M. (Журнал математической физики, анализа, геометрии, 2009)
    In terms of boundary values, we describe a spectrum of the linear relations indicated in the paper title. We study the invertible restrictions of maximal relation and show that the operators inverse to these restrictions ...
  • On the Spectrum of Riemannian Manifolds with Attached Thin Handles 
    Khrabustovskyi, A. (Журнал математической физики, анализа, геометрии, 2009)
    The behavior as ε → 0 of the spectrum of the Laplace Beltrami operator Δε is studied on Rieinannian manifolds depending on a small parameter ε . They consist of a fixed compact manifold with attached handles whose radii ...
  • Parabolic Foliations on Three-Manifolds 
    Krouglov, V. (Журнал математической физики, анализа, геометрии, 2009)
    We prove that every closed orientable three-manifold admits a parabolic foliation.
  • The Hardy-Littlewood Theorem and the Operator of Harmonic Conjugate in Some Classes of Simply Connected Domains with Rectifiable Boundary 
    Tkachenko, N.M.; Shamoyan, F.A. (Журнал математической физики, анализа, геометрии, 2009)
    The analogue of known theorem Hardy-Littlewood about Lp-estimations of derivative analytical function through norm to the function, also are proved Lp-weight estimations the operator of harmonic conjugate in some classes ...
  • Алексей Васильевич Погорелов 
    Автор відсутній (Журнал математической физики, анализа, геометрии, 2009)
    3 марта 2009 года исполнилось 90 лет со дня рождения академика Алексея Васильевича Погорелова - выдающегося математика XX века. Научная общественность Харькова широк отметила это событие.
  • A q-Analog of the Hua Equations 
    Bershtein, O.; Sinel’shchikov, S. (Журнал математической физики, анализа, геометрии, 2009)
    A necessary condition is established for a function to be in the image of a quantum Poisson integral operator associated to the Shilov boundary of the quantum matrix ball. A quantum analogue of the Hua equations is introduced.
  • Bulk Universality for Unitary Matrix Models 
    Poplavskyi, M. (Журнал математической физики, анализа, геометрии, 2009)
    A proof of universality in the bulk of spectrum of unitary matrix models, assuming that the potential is globally C² and locally C³ function (see Theorem 1.2), is given. The proof is based on the determinant formulas for ...
  • On Commutative Systems of Nonselfadjoint Unbounded Linear Operators 
    Zolotarev, V.A. (Журнал математической физики, анализа, геометрии, 2009)
    For a commutative system of nonselfadjoint unbounded operators A₁, A₂ the concept of colligation and associated open system is given. For these open systems, the consistency conditions are established and the conservation ...
  • Necessary and Sufficient Conditions in Inverse Scattering Problem on the Axis for the Triangular 2 x 2 Matrix Potential 
    Zubkova, E.I.; Rofe-Beketov, F.S. (Журнал математической физики, анализа, геометрии, 2009)
    The characteristic properties of the scattering data for the Schr¨odinger operator on the axis with a triangular 2 × 2 matrix potential are obtained. A difference between the necessary and sufficient conditions for solvability ...
  • Plancherel Measure for the Quantum Matrix Ball-1 
    Bershtein, O.; Kolisnyk, Ye. (Журнал математической физики, анализа, геометрии, 2009)
    The Plancherel formula is one of the celebrated results of harmonic analysis on semisimple Lie groups and their homogeneous spaces. The main goal of this work is to ¯nd a q-analogue of the Plancherel formula for spherical ...
  • Planar Lebesgue Measure of Exceptional Set in Approximation of Subharmonic Functions 
    Girnyk, M. (Журнал математической физики, анализа, геометрии, 2009)
    We consider the pointwise approximation of a subharmonic function having ¯nite order by the logarithm of the modulus of an function up to a bounded quantity. We prove an estimate from below of the planar Lebesgue measure ...
  • Ruled Surfaces as Pseudospherical Congruences 
    Gorkavyy, V.O.; Nevmerzhitska, O.M. (Журнал математической физики, анализа, геометрии, 2009)
    Two-dimensional ruled surfaces in the spaces of constant curvature Rⁿ, Sⁿ, Hn and in the Riemannian products Sⁿ x R¹, Hⁿ x R¹ are considered. A ruled surface is proved to represent a pseudospherical congruence if and only ...

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