Abstract
Very recently, Haghi et al. (Topol. Appl. 160:450-454, 2013) proved that some fixed point theorems in partial metric spaces can be obtained from metric spaces. In this paper, we prove some common fixed point theorems for four mappings f, g, S and T satisfying a nonlinear contraction in ordered metric spaces, where the mappings f and g are dominating and weak annihilators of the mappings T and S, respectively. We utilize the techniques of Haghi et al. to derive our main result, which is a generalization of the result of Shobkolaei et al. (Appl. Math. Comput. 219:443-452, 2012). Also, we introduce an example to support the usability of our results.