Qualitative and quantitative properties for the space ℓp,q

The space lp,q is simply the space lp but renormed by 1 Ixlp,q =(11x+llg + IIx-IIg);, ß E where II'[Ip is the usual lp norm and x + and x- are the positive and negative. parts of x, respectively. Bynum used lp,1 and Smith and Turett used 12,1 to show that neither normal structure nor uniform no...

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Detalhes bibliográficos
Autores: Domínguez Benavides, Tomás, López Acedo, Genaro, Xu, Hong-Kun
Formato: artículo
Estado:Versión publicada
Fecha de publicación:1996
País:España
Recursos:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/45267
Acesso em linha:http://hdl.handle.net/11441/45267
Access Level:acceso abierto
Palavra-chave:Normal structure
Uniform normal structure
Uniformly rotund
Geometrical coefficients
Uniform Opial condition
Opial's modulus
Orthogonal convexity
Descrição
Resumo:The space lp,q is simply the space lp but renormed by 1 Ixlp,q =(11x+llg + IIx-IIg);, ß E where II'[Ip is the usual lp norm and x + and x- are the positive and negative. parts of x, respectively. Bynum used lp,1 and Smith and Turett used 12,1 to show that neither normal structure nor uniform normal structure is a self dual property for Banach spaces. In this paper we present some more qualitative and quantitative properties for Ip,q; in particular, we provide an affirmative answer to a question of Khamsi.