Electron. J. Diff. Equ., Vol. 2010(2010), No. 35, pp. 1-15.

Krasnoselskii-type fixed point theorems under weak topology settings and applications

Tian Xiang, Rong Yuan

Abstract:
In this article, we establish some fixed point results of Krasnoselskii type for the sum T+S, where S is weakly continuous and T may not be continuous. Some of the main results complement and encompass the previous ones. As an application, we study the existence of solution to one parameter operator equations. Finally, our results are used to prove the existence of solution for integral equations in reflexive Banach spaces.

Submitted February 9, 2009. Published March 9, 2010.
Math Subject Classifications: 37C25, 47H10, 31B10.
Key Words: Expansive mapping; fixed point; weakly continuous; integral equation.

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Tian Xiang
School of Mathematical Sciences, Beijing Normal University
Laboratory of Mathematics and Complex Systems
Ministry of Education, Beijing 100875, China
email: tianx@mail.bnu.edu.cn
Rong Yuan
School of Mathematical Sciences, Beijing Normal University
Laboratory of Mathematics and Complex Systems
Ministry of Education, Beijing 100875, China
email: ryuan@bnu.edu.cn

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