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Doctoral Thesis
DOI
https://doi.org/10.11606/T.45.2015.tde-29032023-153751
Document
Author
Full name
Pricila da Silva Barbosa
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Pereira, Antonio Luiz (President)
Aragão, Gleiciane da Silva
Fu, Ma To
Oliveira, Luiz Augusto Fernandes de
Silva, Ricardo Parreira da
Title in Portuguese
Continuidade de atratores para uma família de problemas parabólicos semi-lineares em domínios Lipschitzianos
Keywords in Portuguese
Atrator global
Continuidade de atratores
Domínio Lipschitz
Perturbação do domínio
Problema parabólico
Abstract in Portuguese
Neste trabalho consideramos uma família de problemas parabólicos semi-lineares com condição de fronteira do tipo Neumann não linear, onde \Omega_0 é o quadrado unitário, \Omega_\epsilon = h_\epsilon(\Omega_0) e h_\epsilon é uma família de difeomorfismos convergindo para a identidade na norma C^1. Provamos que o problema está bem posto, para \epsilon >0 suficientemente pequeno, em um espaço de fase adequado. Mostramos que o semigrupo associado tem um atrator global \mathcal_{h_\epsilon} e a família \{\mathcal_{h_\epsilon}\}_{h_\epsilon \,\in\,\dif^1(\Omega)} é contínua em h_\epsilon=i_\Omega.
Title in English
Continuity of attractors for a family of semilinear parabolic problems in Lipschitz domain.
Keywords in English
Continuity of attractor
Global attractor
Lipschitz domain
Parabolic problem
Perturbation of the domain
Abstract in English
In this work we consider a family of semilinear parabolic problems with nonlinear Neumann boundary conditions where \Omega_0 is the unit square, \Omega_{\epsilon}=h_{\epsilon}(\Omega_0) and h_{\epsilon} is a family of diffeomorphisms converging to the identity in the C^1-norm. We prove that the problem is well posed for \epsilon>0 sufficiently small in a suitable phase space. We also show that the associated semigroup has a global attractor \mathcal_{h_\epsilon} and the family \{\mathcal_{h_\epsilon}\}_{h_\epsilon \,\in\,\dif^1(\Omega)} is continuous at h_\epsilon = i_\Omega.
 
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TesePricilaSBarbosa.pdf (676.54 Kbytes)
Publishing Date
2023-03-30
 
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