Funções s-assintoticamente periódicas em espaços de Banach e aplicações à equações diferenciais funcionais / S-asymptotically periodic functions on Banach spaces and applications for functional differential equations

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

This work is devoted to the study of the class of continuous and bounded functions f : [0 INFINIT) ARROWX for which there exists omega>0 such that limt IND.t ARROWINFINIT(f(t + omega!) - f(t)) = 0 (in the sequel called S-asymptotically !-periodic functions). We discuss qualitative properties and establish some relationships between this type of functions and the class of asymptotically omega-periodic functions. We also study the existence of S-asymptotically omega-periodic mild solutions for a first-order abstract Cauchy problem in Banach spaces and for some classes of abstract neutral functional differential equations with infinite delay. Furthermore, applications to partial differential equations are given

ASSUNTO(S)

asymptotically periodic functions funções s-assintoticamente periódicas semigroups of bounded linear operators abstract cauchy problem funções assintoticamente periódicas funções assintoticamente quase periódicas semigrupos de operadores lineares limitados asymptoticallly almost periodic functions problema de cauchy abstrato s-asymptoticallly periodic functions

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