Browsing by Author "Abbas M."

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    Istratescu-Suzuki-Ćirić-type fixed points results in the framework of G-metric spaces
    (2016) Abbas M.; Hussain A.; Popović, Branislav; Radenovíc S.
    © 2016 International Scientific Research Publications. All rights reserved. The aim of this paper is to present fixed point results of convex contraction, convex contraction of orde2, weakly Zamfirescu and Ćirić strong almost contraction mappings in the framework of G-metric spacesSome examples are presented to support the results proved herein. As an application, we derive Suzuki typfixed point in G-metric spaces. Our results generalize and extend various results in the existing literatureWe also present some examples to illustrate our new theoretical results.
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    On Weakly Commuting Set-Valued Mappings on a Domain of Sets Endowed with Directed Graph
    (2017) Abbas M.; Nazir, Talat; Popović, Branislav; Radenovíć, Stojan
    © 2016, Springer International Publishing. The aim of this paper is to present coincidence and common fixed point results of set-valued mappings satisfying certain generalized graphic F-contractive conditions on a family of sets endowed with a graph. It is worth mentioning that these results are obtained without appealing to any form of continuity of mappings involved herein. Some examples are presented to support the results proved in this paper. Our results unify, generalize and extend various comparable results in the existing literature.