ON A REDUCTION OF A LINEAR HOMOGENEOUS DIFFERENTIAL SYSTEM WITH OSCILLATING COEFFICIENTS TO A SYSTEM WITH SLOWLY-VARYING COEFFICIENTS
Journal Title: Дослідження в математиці і механіці - Year 2014, Vol 19, Issue 1
Abstract
For the linear homogeneous differential system, whose coefficients are represented as an absolutely and uniformly convergent Fourier-series with slowly-varying coefficients and frequency, conditions of existence of the linear transformation with coefficients of similar structure, this system leads to a system with slowly-varying coefficients in a noresonance case in asymptotical large interval of independent variable, are obtained.
Authors and Affiliations
S. A. Shchogolev
About embedding anisotropic classes in metric spaces with integral metric
Let L0 (Tm) be a set of periodic measurable real-valued functions of m variables, ψ : R1+ → R1+ be the continuity modulus and Lψ(Tm) = {f ∈ L0(Tm) : _f_ψ := _ Tm ψ (|f(x)|) dx < ∞}. The sufficient conditions for embeddin...
Generalization of averaging conditions in the optimal control problem with fast and slow variables
The optimal control problem is described by the system of differential equations with fast and slow variables and by the terminal criterion of quality. There is a generalization of averaging conditions. There is proved t...
Limiting equilibrium of plate with filled slit under tension and bending
The problem of tension and bending of an elastic plate weakened by narrow rectilinear slit filled with low-modulus material is considered within framework the classical two-dimensional plates theory. For the inclusion of...
Formula of Life: On the 80th anniversary of Academician A. M. Samoilenko
До 80-рiччя академiка НАН України А. М. Самойленка За матерiалами публiкацiї Перестюк М.О. Формула життя. До 80-рiччя академiка НАН України А.М. Самойленка / М. О. Перестюк // Вiсн. НАН України. — 2018. — № 1. — С. 95–98...
Simultaneous approximation of locally integrable functions and their ψ-integrals
Low smoothness case. The article presents the problems of simultaneous approximation of locally integrable functions on the real axis of low smoothness and their integrals using Vallee Poussin operators. The asymptotic l...