Publication Cover
Applicable Analysis
An International Journal
Volume 29, 1988 - Issue 1-2
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Original Articles

Hyperbolic-parabolic singular perturbations for scalar nonlinearities

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Pages 19-44 | Received 22 Oct 1987, Published online: 02 May 2007
 

Abstract

A hyperbolic-parabolic singular perturbation problem is considered for a nonlinear wave equation used a model for an extensible nonlinear string. An initial-boundary value problem is treated in which there is an initial layer at t = 0. It is proved that the solution of the reduced problem approximates the solution of the full problem uniformly on sets bounded in the time direction. The approximation is not uniform for the time derivatives unless initial layer correctors are added

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