A note on tripled coincidence and tripled common fixed point theorems in partially ordered metric spaces

摘要

In this paper we have used a method of reducing tripled coincidence and tripled fixed point results in (ordered) metric spaces to the respective results for mappings with one variable, even obtaining (in some cases) more general theorems. Our results generalize, extend, unify, enrich and complement recently tripled coincidence point theorems established by Berinde and Borcut (2011) [4], Borcut and Berinde (2012) [7] and Borcut (2012) [9]. Also, by using our method several coupled coincidence and coupled common fixed point results in ordered metric spaces can be reduced to the coincidence and common fixed point results with one variable.