COUPLED COINCIDENCE AND COMMON FIXED POINT THEOREMS FOR SINGLE-VALUED AND FUZZY MAPPINGS

Abstract. In this paper, we study the existence of coupled coincidence and coupled common fixed points for single-valued and fuzzy mappings under a contractive condition in metric space. Presented theorems extend and improve the main results of Abbas andĆirić et al. [M. Abbas, L.Ćirić, et al., Coupled coincidence and common fixed point theorems for hybrid pair of mappings