A UNIQUE COMMON QUARTET FIXED POINT THEOREM IN PARTIALLY ORDERED CONE METRIC SPACES
The notion of quartet fixed point was introduced by Karapinar and Luong [8] and obtained some fixed point theorems in partially ordered metric spaces. In this paper, we obtain a unique common quartet fixed point theorem in partially ordered cone metric spaces in which cone is not necessarily normal. We also give some examples to support our results.
cone metric, w-compatible maps, quartet fixed point, complete space.