Karapınar, ErdalChen, Chi-MingKarapinar, ErdalMathematics2024-07-052024-07-05201712008-18982008-190110.22436/jnsa.010.07.50https://doi.org/10.22436/jnsa.010.07.50https://hdl.handle.net/20.500.14411/616KARAPINAR, ERDAL/0000-0002-6798-3254In this paper, by using the measure of noncompactness and Meir-Keeler type mappings, we prove some new fixed point theorems for some certain mappings, namely, the weaker phi-Meir-Keeler type contractions, asymptotic weaker phi-Meir-Keeler type contractions, asymptotic sequence {phi(i)}-Meir-Keeler type contraction, xi-generalized comparison type contraction, and R-functional type psi-contractions. Our results improve and hence cover the well-known Darbo's fixed point theorem, and several related recent fixed point results. (C) 2017 All rights reserved.eninfo:eu-repo/semantics/openAccessMeasure of noncompactnessMeir-Keeler-type set contractionfixed pointsArticle10740154024WOS:000409101400050