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JOURNALS // Matematicheskii Sbornik // Archive

Mat. Sb., 2010 Volume 201, Number 1, Pages 81–102 (Mi sm7538)

This article is cited in 8 papers

The asymptotic behaviour of the solution to a system of differential equations with a small parameter and singular initial point

A. M. Il'ina, Yu. A. Leonychevb, O. Yu. Khachayc

a Chelyabinsk State University
b "IT Ènigma" Ltd.
c Ural State University

Abstract: The initial value problem for a system of nonlinear ordinary differential equations with a small parameter multiplying the highest derivative is investigated. In a neighbourhood of the initial point the asymptotic behaviour of the solution has quite a complicated structure. A uniform asymptotic approximation to the solution up to an arbitrary power of the small parameter is constructed and substantiated.
Bibliography: 3 titles.

Keywords: asymptotic expansion, small parameter, initial value problem, matching method.

UDC: 517.928

MSC: Primary 34E05, 34E15; Secondary 34A34, 34E13

Received: 11.02.2009

DOI: 10.4213/sm7538


 English version:
Sbornik: Mathematics, 2010, 201:1, 79–101

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© Steklov Math. Inst. of RAS, 2025