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Longtime Dynamics of a Semilinear Lame System

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Author(s):
Bocanegra-Rodriguez, Lito Edinson ; Silva, Marcio Antonio Jorge ; Ma, To Fu ; Seminario-Huertas, Paulo Nicanor
Total Authors: 4
Document type: Journal article
Source: Journal of Dynamics and Differential Equations; v. N/A, p. 22-pg., 2021-02-06.
Abstract

This paper is concerned with longtime dynamics of semilinear Lame systems partial derivative(2)(t)u - mu Delta u-(lambda+mu) del div u + alpha partial derivative(t)u + f(u) = b. defined in bounded domains of R-3 with Dirichlet boundary condition. Firstly, we establish the existence of finite dimensional global attractors subjected to a critical forcing f(u). Writing lambda+mu as a positive parameter epsilon, we discuss some physical aspects of the limit case epsilon -> 0. Then, we show the upper-semicontinuity of attractors with respect to the parameter when epsilon -> 0. To our best knowledge, the analysis of attractors for dynamics of Lame systems has not been studied before. (AU)

FAPESP's process: 19/11824-0 - Dynamics of semilinear wave equations with localized damping
Grantee:Ma To Fu
Support Opportunities: Regular Research Grants