Global optimization in metric spaces with partial orders

Abstract

The main objective of this article is to resolve an optimization problem in the setting of a metric space that is endowed with a partial order. In fact, given non-empty subsets A and B of a metric space that is equipped with a partial order, and a non-self mapping S: A → B, this article explores the existence of an optimal approximate solution, known as a best proximity point of the mapping S, to the equation Sx = x, where S is a proximally increasing, ordered proximal contraction. This article exhibits an algorithm for determining such an optimal approximate solution. Moreover, the result elicited in this article subsumes a fixed point theorem, due to Nieto and Rodriguez-Lopez, in the setting of a metric space with a partial order.

Keywords:

• partially ordered set
• optimal approximate solution
• increasing mapping
• proximally increasing mapping
• ordered proximal contraction
• ordered contraction
• fixed point
• best proximity point

AMS Subject Classifications::

• 90C26
• 90C30