Abstract
We introduce the concept of triangular alpha(c) -admissible mappings (pair of mappings) with respect to eta(c) nonself-mappings and establish the existence of PPF dependent fixed (coincidence) point theorems for contraction mappings involving triangular alpha(c) admissible mappings (pair of mappings) with respect to eta(c) nonself-mappings in Razumikhin class. Several interesting consequences of our theorems are also given.