Browsing Makale Koleksiyonu by Author "Altun, İshak"
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Fixed point results for F-contractions on space with two metrics
Olgun, Murat; Alyıldız, Tuğçe; Biçer, Özge; Altun, İshak (University of Niš Faculty of Science and Mathematics, 2017)In this paper, taking into account two metrics on a space, we present a new fixed point theorem for F-contractions. Our theorem includes both Agarwal and O'Regan's and Wardowski's results as properly. Also we provide a ... -
A related fixed point theorem for F-contractions on two metric spaces
Olgun, Murat; Biçer, Özge; Alyıldız, Tuğçe; Altun, İshak (Hacettepe University, 2019)Recently, Wardowski in [Fixed points of a new type of contractive mappings in complete metric spaces, Fixed Point Theory Appl. 2012] introduced the concept of F-contraction on complete metric space which is a proper ... -
Some related fixed point theorems for multivalued mappings on two metric spaces
Biçer, Özge; Olgun, Murat; Alyıldız, Turhan; Altun, İshak (Vasyl Stefanyk Precarpathian National University, 2020)The definition of related mappings was introduced by Fisher in 1981. He proved some theorems about the existence of fixed points of single valued mappings defined on two complete metric spaces and relations between these ...