The degree of nondensifiability of linear bounded operators and its applications

[EN] In the present paper we define the degree of nondensifiability (DND for short) of a bounded linear operator T on a Banach space and analyze its properties and relations with the Hausdorff measure of non-compactness (MNC for short) of T. As an application of our results, we have obtained a formu...

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Detalhes bibliográficos
Autores: García, Gonzalo, Mora, Gaspar
Formato: artículo
Fecha de publicación:2024
País:España
Recursos:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/203794
Acesso em linha:https://riunet.upv.es/handle/10251/203794
Access Level:acceso abierto
Palavra-chave:Linear operators
Compact operators
Degree of nondensifiability
α-dense curves
Hyers-Ulam stability constant
Descrição
Resumo:[EN] In the present paper we define the degree of nondensifiability (DND for short) of a bounded linear operator T on a Banach space and analyze its properties and relations with the Hausdorff measure of non-compactness (MNC for short) of T. As an application of our results, we have obtained a formula to find the essential spectral radius of a bounded operator T on a Banach space as well as we have provided the best possible lower bound for the Hyers-Ulam stability constant of T in terms of the aforementioned DND.