Document Type : Research Paper

Authors

• S. Moradi
• E. Analoei

Department of Mathematics, Faculty of Science, Arak University, Arak, 38156- 8-8349, Iran.

Abstract

Let $(X, d)$ be a complete metric space and let $f,g : X \to X$ be two mappings which satisfy a ($\psi$-$\varphi$)-weak contraction condition or generalized ($\psi$-$\varphi$)-weak contraction condition. Then $f$ and $g$ have a unique common fixed point. Our results extend previous results given by Ciric (1971), Rhoades (2001), Branciari (2002), Rhoades (2003), Abbas and Ali Khan (2009), Zhang and Song (2009) and Moradi at. el. (2011).

Keywords

• Fixed point
• Coincidence point
• weakly compatible