Duality for logarithmic interpolation spaces when 0 < q < 1 and applications

We work with spaces (A0;A1)θ;q;A which are logarithmic perturbations of the real interpolation spaces. We determine the dual of (A0;A1)θ;q;A when0 < q < 1. As we show, if θ = 0 or 1 then the dual space depends on the relationship between q and A. Furthermore we apply the abstract results to co...

Descripción completa

Detalles Bibliográficos
Autores: Cobos Díaz, Fernando, Fernández Besoy, Blanca
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/12191
Acceso en línea:https://hdl.handle.net/20.500.14352/12191
Access Level:acceso abierto
Palabra clave:517.538.5
517.518.8
Teoría de la aproximación
Approximation spaces
Besov spaces Compact embeddings
Entropy numbers
Approximation numbers
Matemáticas (Matemáticas)
Análisis matemático
12 Matemáticas
1202 Análisis y Análisis Funcional
Descripción
Sumario:We work with spaces (A0;A1)θ;q;A which are logarithmic perturbations of the real interpolation spaces. We determine the dual of (A0;A1)θ;q;A when0 < q < 1. As we show, if θ = 0 or 1 then the dual space depends on the relationship between q and A. Furthermore we apply the abstract results to compute the dual space of Besov spaces of logarithmic smoothness and the dual space of spaces of compact operators in a Hilbert space which are closeto the Macaev ideals.