Abstract

In this paper we consider a kind of Geraghty contractions by using mw-distances in the setting of complete quasi-metric spaces. We provide fixed point theorems for this type of mappings and illustrate with some examples the results obtained.

Highlights

  • Introduction and PreliminariesIn 1973, Geraghty proved the following fixed point theorem which generalizes the classical Banach fixed point theorem.Theorem 1 ([1])

  • The mapping T : X → X has a unique fixed point provided that there exists β ∈ B such that d ( T κ, Tν) ≤ β(d (κ, ν))d (κ, ν), for all κ, ν ∈ X

  • Cho et al [3] defined the notion of α-Geraghty contraction in the context of a metric space, as follows: A maping T is called a α-Geraghty contraction if α(κ, ν)d ( T κ, Tν) ≤ β(d (κ, ν)) max{d (κ, ν), d (ν, Tν), d (κ, T κ)}, for all κ,ν ∈ X, where α : X × X → [0, ∞) is a function with the property

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Summary

Introduction

Introduction and PreliminariesIn 1973, Geraghty proved the following fixed point theorem which generalizes the classical Banach fixed point theorem.Theorem 1 ([1]).

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