COUPLED FIXED POINT THEOREMS IN GENERALIZED METRIC SPACES

T.G. Bhaskar and V. Lakshmikantham (Fixed point theorems in par- tially ordered metric spaces and applications, Nonlinear Analysis 65, 1379–1393, 2006), V. Lakshmikantham and Lj.B. Ciric (Coupled fixed point theorems for nonlinear contractions in partially ordered metric spaces, Nonlinear Analysis 70, (2009) 4341–4349, 2009) introduced the concept of a coupled coincidence point of a mapping F from X×X into X and a mapping g from X into X. In the present paper, we prove a coupled coincidence fixed point theorem in the setting of a generalized metric space in the sense of Z. Mustafa and B. Sims.