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Fixed point results for single and set-valued \(\alpha\)-\(\eta\)-\(\psi\)-contractive mappings. (English) Zbl 1293.54025

Summary: B. Samet et al. [Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 75, No. 4, 2154–2165 (2012; Zbl 1242.54027)] introduced \(\alpha\)-\(\psi\)-contractive mappings and proved some fixed point results for these mappings. More recently, P. Salimi et al. [Fixed Point Theory Appl. 2013, Article ID 151, 19 p. (2013; Zbl 1293.54036)] modified the notion of \(\alpha\)-\(\psi\)-contractive mappings and established certain fixed point theorems. Here, we continue to utilize these modified notions for single-valued Geraghty and Meir-Keeler-type contractions, as well as multi-valued contractive mappings. The presented theorems provide main results of N. Hussain et al. [J. Inequal. Appl. 2013, Article ID 114, 11 p. (2013; Zbl 1293.54023)], N. Hussain et al. [Fixed Point Theory Appl. 2013, Article ID 34, 14 p. (2013; Zbl 1293.54024)] and [J. Hasanzade Asl et al. [Fixed Point Theory Appl. 2012, Article ID 212, 6 p. (2012; Zbl 1293.54017)]] as corollaries. Moreover, some examples are given here to illustrate the usability of the obtained results.

MSC:

54H25 Fixed-point and coincidence theorems (topological aspects)
54E40 Special maps on metric spaces
54C60 Set-valued maps in general topology

References:

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