Coupled fixed point theorems for rational type contractions
Dedicated to Professor Ioan A. Rus on the occasion of his 80th anniversary
Keywords:
Fixed point, ordered metric space, rational type contraction, coupled fixed point, data dependence, well-posedness, Ulam-Hyers stability, limit shadowing property.Abstract
In this paper, we will consider the coupled fixed problem in b-metric space for single-valued operators satisfying a generalized contraction condition of rational type. First part of the paper concerns with some fixed point theorems, while the second part presents a study of the solution set of the coupled fixed point problem. More precisely, we will present some existence and uniqueness theorems for the coupled fixed point problem, as well as a qualitative study of it (data dependence of the coupled fixed point set, well-posedness, Ulam-Hyers stability and the limit shadowing property of the coupled fixed point problem) under some rational type contraction assumptions on the mapping.
Mathematics Subject Classification (2010): 47H05, 47H09, 47H10.
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