Multivalued fixed point theorems in Banach algebra based on degree of nondensifiability and applications

Fixed Point Theory and Algorithms for Sciences and Engineering 2026 Open access

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Authors: Mohamed Aggad, Abdelghani Ouahab, Juan J. Nieto
DOI: 10.1186/s13663-026-00826-8
Cited by: 1
References: 22

Abstract

Using the concept of the degree of nondensifiability in Banach algebras, we establish fixed point theorems for the product of two operators that are contractions with respect to this measure. Furthermore, we present a Krasnosel’skii-type fixed point theorem for the sum of two operators in Banach algebras.

Fields of Study & Subjects

Fixed Point Theorems Analysis Nonlinear Differential Equations Analysis Functional Equations Stability Results

Publication details

Journal / source
Fixed Point Theory and Algorithms for Sciences and Engineering
Publisher
Springer Science and Business Media LLC
Volume
2026
Issue
1
Publication date
10 February 2026
Language
EN