Periodic solutions of evolution equations

Authors: Khalil Ezzinbi, Toshiki Naito, Nguyễn Văn Minh, James Liu,

http://online.watsci.org/abstract_pdf/2004v11/v11n5-6a/pdf_v11n5-6a/1.pdf

Publisher, magazine: ,

Publication year: 2004

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Abstract

Consider the following evolution equations without delay or with finite or infinite delay in a general Banach space X, u 0 (t) + A(t)u(t) = f(t, u(t)), t > 0, u 0 (t) + A(t)u(t) = f(t, u(t), ut), t > 0. We will analyze some fixed point theorems and then see how they can be applied to derive periodic solutions for the above mentioned equations.

Tags: Finite and Infinite Delays, Bounded and Periodic Solutions, Condensing Operators, Horn’s, Sadovskii’s, and Hale and Lunel’s Fixed Point Theorems.