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

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

Сортувати за: Порядок: Результатів:

  • 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 ...
  • The Existence of Heteroclinic Travelling Waves in the Discrete Sine-Gordon Equation with Nonlinear Interaction on a 2D-Lattice 
    Bak, S. (Журнал математической физики, анализа, геометрии, 2018)
    The article deals with the discrete sine-Gordon equation that describes an infinite system of nonlinearly coupled nonlinear oscillators on a 2D-lattice with the external potential V (r) = K(1 - cos r). The main result ...
  • 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 ...
  • The Interaction of the Maxwell Flows of General Form for the Bryan-Pidduck Model 
    Hukalov, O.O.; Gordevskyy, V.D. (Журнал математической физики, анализа, геометрии, 2018)
    The interaction between the two Maxwell flows of general form in a gas of rough spheres is studied. The approximate solution of the Bryan–Pidduck equation describing the interaction is a bimodal distribution with specially ...
  • 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 ...
  • 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 ...
  • 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 ...
  • Валентин Якович Голодець (до 80-рiччя з дня народження) 
    Автор відсутній (Журнал математической физики, анализа, геометрии, 2018)
    У минулому роцi виповнилося 80 рокiв доктору фiзико-математичних наук, професору Валентину Яковичу Голодцю.
  • 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 ...
  • 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.
  • 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 ...
  • 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 ...
  • 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) ...
  • 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 ...
  • The Solvability of the Initial-Boundary Value Problems for a Nonlinear Schrödinger Equation with a Special Gradient Term 
    Yagub, G.; Ibrahimov, N.S.; Zengin, M. (Журнал математической физики, анализа, геометрии, 2018)
    In this paper, the initial-boundary value problems for the two-dimensional nonlinear Schrödinger equation with a special gradient term with purely imaginary coefficients in the nonlinear part, when the coefficients of the ...
  • 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 ...
  • 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 ...
  • The KPZ Equation and Moments of Random Matrices 
    Gorin, Vadim; Sodin, Sasha (Журнал математической физики, анализа, геометрии, 2018)
    The logarithm of the diagonal matrix element of a high power of a random matrix converges to the Cole–Hopf solution of the Kardar–Parisi–Zhang equation in the sense of one-point distributions.
  • 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 ...
  • The Extended Leibniz Rule and Related Equations in the Space of Rapidly Decreasing Functions 
    König, Hermann; Milman, Vitali (Журнал математической физики, анализа, геометрии, 2018)
    We solve the extended Leibniz rule T(f•g)=Tf•Ag+Af•Tg for operators T and A in the space of rapidly decreasing functions in both cases of complex and real-valued functions.

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