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

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 B...

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Autores principales:	Mohamed Aggad, Abdelghani Ouahab, Juan J. Nieto
Formato:	Artigo
Lenguaje:	Inglês
Publicado:	SpringerOpen 2026-02-01
Colección:	Fixed Point Theory and Algorithms for Sciences and Engineering
Materias:	Degree of nondensifiability α-dense curves Multivalued map Fixed point Sums of operators condensing k − φ d $k-\varphi _{d}$ -contraction
Acceso en línea:	https://doi.org/10.1186/s13663-026-00826-8
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