... and g ha ve a unique common fixed point in X.This completes the proof of the Theorem 1.Taking g I the identity mapping in Theorem 1, we get the following consequence.Corollary 1. Let X, ... Fixed Point Theory and Applications 11Then there exist x ∈ X such that x Fx, x,thatis,F admits a unique fixed point in X.Let φtkt,where0<k<1, the following by Lemma 1, we get the following.Corollary ... Point Theory and Applications 13Thus it is verified that the functions F, g, φ satisfy all the conditions of Theorem 1;x 2 − 2√3 is the common fixed point of F and g in X.AcknowledgmentThe...