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Перегляд Журнал математической физики, анализа, геометрии, 2018 (том 14) за назвою

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Перегляд Журнал математической физики, анализа, геометрии, 2018 (том 14) за назвою

Сортувати за: Порядок: Результатів:

  • Asymptotic Properties of Integrals of Quotients when the Numerator Oscillates and the Denominator Degenerates 
    Kuksin, S. (Журнал математической физики, анализа, геометрии, 2018)
    We study asymptotic expansion as ν→0 for integrals over ℝ²d={(x,y)} of quotients of the form F(x,y)cos(λx∙y)/((x∙y)²+ν²), where λ≥0 and F decays at infinity sufficiently fast. Integrals of this kind appear in the theory ...
  • Asymptotic Solutions of the Wave Equation with Degenerate Velocity and with Right-Hand Side Localized in Space and Time 
    Anikin, A.; Dobrokhotov, S.; Nazaikinskii, V. (Журнал математической физики, анализа, геометрии, 2018)
    We study the Cauchy problem for the inhomogeneous two-dimensional wave equation with variable coefficients and zero initial data. The righthand side is assumed to be localized in space and time. The equation is considered ...
  • Author Index to Volume 14 for Year 2018 
    Автор відсутній (Журнал математической физики, анализа, геометрии, 2018)
  • Construction of KdV Flow I. τ-Function via Weyl Function 
    Kotani, Shinichi (Журнал математической физики, анализа, геометрии, 2018)
    Sato introduced the τ-function to describe solutions to a wide class of completely integrable differential equations. Later Segal–Wilson represented it in terms of the relevant integral operators on Hardy space of the unit ...
  • Estimates for the Gaussian Curvature of a Strictly Convex Surface and its Integral Parameters 
    Babenko, V.I. (Журнал математической физики, анализа, геометрии, 2018)
    Closed and non-closed (with planar edges) strictly convex surfaces with continuous curvatures are considered. Upper and lower bounds are obtained for the Gaussian curvature under various restrictions imposed on integral ...
  • Foliations of codimension one and Milnor's conjecture 
    Bolotov, D.V. (Журнал математической физики, анализа, геометрии, 2018)
    We prove that a fundamental group of leaves of a codimension one C²- foliation with nonnegative Ricci curvature on a closed Riemannian manifold is finitely generated and almost Abelian, i.e., it contains finitely generated ...
  • Gap Control by Singular Schrödinger Operators in a Periodically Structured Metamaterial 
    Exner, Pavel; Khrabustovskyi, Andrii (Журнал математической физики, анализа, геометрии, 2018)
    We consider a family {Hε}ε>0 of εZⁿ-periodic Schrödinger operators with δ′-interactions supported on a lattice of closed compact surfaces; within a minimum period cell one has m ∊ N surfaces. We show that in the limit ...
  • Hypersurfaces with Lr-Pointwise 1-Type Gauss Map 
    Akram Mohammadpouri (Журнал математической физики, анализа, геометрии, 2018)
    In this paper, we study hypersurfaces in Еⁿ⁺¹ whose Gauss map G satisfies the equation LrG = f(G + C) for a smooth function f and a constant vector C, where Lr is the linearized operator of the (r+1)-st mean curvature of ...
  • Inverse Scattering on the Half Line for the Matrix Schrödinger Equation 
    Aktosun, Tuncay; Weder, Ricardo (Журнал математической физики, анализа, геометрии, 2018)
    The matrix Schrödinger equation is considered on the half line with the general selfadjoint boundary condition at the origin described by two boundary matrices satisfying certain appropriate conditions. It is assumed that ...
  • Lagrange Stability of Semilinear Differential-Algebraic Equations and Application to Nonlinear Electrical Circuits 
    Filipkovska, M.S. (Журнал математической физики, анализа, геометрии, 2018)
    A semilinear differential-algebraic equation (DAE) is studied focusing on the Lagrange stability (instability). The conditions for the existence and uniqueness of global solutions (a solution exists on an infinite interval) ...
  • Long-Time Asymptotics for the Toda Shock Problem: Non-Overlapping Spectra 
    Egorova, I.; Michor, J.; Teschl, G. (Журнал математической физики, анализа, геометрии, 2018)
    We derive the long-time asymptotics for the Toda shock problem using the nonlinear steepest descent analysis for oscillatory Riemann-Hilbert factorization problems. We show that the half-plane of space/time variables splits ...
  • Non-Differentiable Functions Defined in Terms of Classical Representations of Real Numbers 
    Serbenyuk, S.O. (Журнал математической физики, анализа, геометрии, 2018)
    The present paper is devoted to the functions from a certain subclass of non-differentiable functions. The arguments and values of the considered functions are represented by the s-adic representation or the nega-s-adic ...
  • Nonlinear Dynamics of Solitons for the Vector Modified Korteweg-de Vries Equation 
    Fenchenko, V.; Khruslov, E. (Журнал математической физики, анализа, геометрии, 2018)
    The vector generalization of the modified Korteweg–de Vries equation is considered and the inverse scattering transform for solving this equation is developed. The solitons and the breather solutions are constructed and ...
  • On Spectral Properties of the L Operator in the Lax Pair of the sine-Gordon Equation 
    Kappeler, T.; Widmer, Y. (Журнал математической физики, анализа, геометрии, 2018)
    We analyze the periodic spectrum of the L operator in the Lax pair of the sine-Gordon equation in terms of the regularity of the potential.
  • On the Class of Einstein Exponential-Type Finsler Metrics 
    Akbar Tayebi; Ali Nankali; Behzad Najafi (Журнал математической физики, анализа, геометрии, 2018)
    In this paper, a special class of Finsler metrics, the so-called (α, β)- metrics, which are defined by F = αφ(s), where α is a Riemannian metric and β is a 1-form, is studied. First we show that the class of almost regular ...
  • Renormalized Solutions for Nonlinear Parabolic Systems in the Lebesgue{Sobolev Spaces with Variable Exponents 
    El Hamdaoui, B.; Bennouna, J.; Aberqi, A. (Журнал математической физики, анализа, геометрии, 2018)
    The existence result of renormalized solutions for a class of nonlinear parabolic systems with variable exponents. The main contribution of our work is the proof of the existence of renormalized solutions without the ...
  • Ricci Solitons on Lorentzian Four-Dimensional Generalized Symmetric Spaces 
    Bouharis, A.; Djebbar, B. (Журнал математической физики, анализа, геометрии, 2018)
    The existence of non-trivial, i.e., non-Einstein, Ricci solitons on fourdimensional Lorentzian generalized symmetric spaces is proved. Moreover, it is shown that only steady Ricci solitons can be gradient.
  • Spectral Analysis of Discontinuous Boundary-Value Problems with Retarded Argument 
    Erdoğan Şen (Журнал математической физики, анализа, геометрии, 2018)
    In the paper, we are concerned with spectral properties of discontinuous Sturm–Liouville type problems with retarded argument. We extend and generalize some approaches and results of the classical regular and discontinuous ...
  • Surfaces of Revolution with Vanishing Curvature in Galilean 3-Space 
    Dede, M.; Ekici, C.; Goemans, W. (Журнал математической физики, анализа, геометрии, 2018)
    In the paper, three types of surfaces of revolution in the Galilean 3- space are defined and studied. The construction of the well-known surface of revolution, defined as the trace of a planar curve rotated about an axis ...
  • Szegö-Type Theorems for One-Dimensional Schrödinger Operator with Random Potential (Smooth Case) 
    Pastur, L.; Shcherbina, M. (Журнал математической физики, анализа, геометрии, 2018)
    The paper is a continuation of work [15] in which the general setting for analogs of the Szegö theorem for ergodic operators was given and several interesting cases were considered. Here we extend the results of [15] to a ...

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