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Master's Dissertation
DOI
https://doi.org/10.11606/D.45.2017.tde-05122017-195008
Document
Author
Full name
Bianca Paolini Lorenzi
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Pereira, Antonio Luiz (President)
Aragão, Gleiciane da Silva
Barbosa, Pricila da Silva
Title in Portuguese
Uma prova funcional analítica da limitação uniforme de atratores para uma família de problemas parabólicos em R2
Keywords in Portuguese
Atrator global
Equações parabólicas
Limitação dos atratores
Operadores setoriais
Perturbação do domínio
Abstract in Portuguese
Este trabalho tem como principal objetivo estudar as constantes que aparecem em desigualdades relacionadas a operadores setoriais e suas potências fracionárias. Demonstramos que tais constantes dependem essencialmente do setor e da constante na desigualdade do resolvente associados ao operador. Como uma aplicação desses resultados, fornecemos uma prova alternativa para a limitação uniforme dos atratores de uma classe de problemas parabólicos semilineares obtidos por perturbação suave de um domínio.
Title in English
An analytic functional proof of the uniform limitation of attractors for a family of parabolic problems in R2
Keywords in English
Global attractor
Limitation of the attractors
Parabolic equations
Perturbation of the domain
Sectorial operators
Abstract in English
This work has as main purpose to study the constants that appear in inequalities related to sectorial operators and their fractional powers. We show that these constants depend essentially on the sector and the constant in the resolvent inequality associated with the operator. As an application of these results, we provide an alternative proof for the uniform bound of the attractors of a class of semilinear parabolic problems obtained by smooth perturbation of a domain.
 
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Publishing Date
2017-12-06
 
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