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Abstract
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Fixed Point Theory and Applications
Volume 2009 (2009), Article ID 170140, 7 pages
doi:10.1155/2009/170140

Generalized Caristi's fixed point theorems

Abdul Latif

Department of Mathematics, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia

Abstract

We present generalized versions of Caristi's fixed point theorem for multivalued maps. Our results either improve or generalize the corresponding generalized Caristi's fixed point theorems due to Bae (2003), Suzuki (2005), Khamsi (2008), and others.