On the Family of Theorems on Metric Completeness
DOI:
https://doi.org/10.29020/nybg.ejpam.v17i4.5440Keywords:
Banach contraction, Rus-Hicks-Rhoades contraction, Suzuki type maps, fixed point, quasi-metricAbstract
There have appeared a large family of theorems related the metric completeness. They are mainly concerned with generalizations of the Banach contraction on quasi-metric spaces and their extended artificial spaces. In this survey article, we classify the family according to our 2023 Metatheorem. Many known metric fixed point theorems belong to the family including the Rus-Hicks-Rhoades (RHR) theorem. Such results on metric spaces are consequences of our generalized forms of the Banach contraction principle for weak contractions or the RHR maps on quasi-metric spaces. We list a large number of examples of metric fixed point theorems which follow from our principles. Moreover, we add some comments on related papers in order to improve them.
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