Abstract

In this paper, we study the behavior of Λ , Υ , ℜ -contraction mappings under the effect of comparison functions and an arbitrary binary relation. We establish related common fixed point theorems. We explain the significance of our main theorem through examples and an application to a solution for the following nonlinear matrix equations: X = D + ∑ i = 1 n A i ∗ X A i − ∑ i = 1 n B i ∗ X B i X = D + ∑ i = 1 n A i ∗ γ X A i , where D is an Hermitian positive definite matrix, A i , B i are arbitrary p × p matrices and γ : H ( p ) → P ( p ) is an order preserving continuous map such that γ ( 0 ) = 0 . A numerical example is also presented to illustrate the theoretical findings.

Highlights

  • Geared up after the result of Kannan [2] in 1968, where he showed that discontinuous self-mapping has a unique fixed point, see Reference [3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21]

  • In 2014, Jleli et al [24,25] presented another important generalization of the Banach Contraction Principle, known as θ-contractions

  • Liu et al [26] discussed some important aspects of both F-contractions and θ-contractions

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Summary

Introduction

The process of generalizations and improvements of the Banach Contraction Principle [1] (1922). Piri et al [23] replaced assumption ( F3 ) by continuity of function F and proved a fixed point theorem, and in this way, presented the Wardowski theorem under weak conditions. Liu et al introduced a (Λ, Υ)-contraction, which contained both F-contractions and θ-contractions and established an important fixed point theorem extending corresponding theorems in References [22,23,24,25]. We prove a fixed point theorem, which generalizes the results of Liu et al [26]. Our presented results are subject to a binary relation

Preliminaries
Fixed Point Theorems
Some Consequences
Applications to Nonlinear Matrix Equations
Conclusions
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