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Mostrando ítems 1-8 de 8
Artículo
Connections between some measures of non-compactness and associated operators
(Universidad de Extremadura, 1990)
Some relationships between the Kuratowski's measure of noncompactness, the ball measure of noncompactness and the d-separation of the points of a set are studied in special classes of Banach spaces. These relations are ...
Artículo
A geometrical coefficient implying the fixed point property and stability results
(University of Houston, 1996)
In this paper we define a new geometric constant M(X) in Banach spaces such that X has the fixed point property for nonexpansive mappings if M(X) > 1. We prove that M(X) •_ WCS(X), the inequality being strict in many ...
Tesis Doctoral
Estabilidad de la propiedad del punto fijo para aplicaciones no-expansivas
(1998)
La teoría métrica del punto fijo estudia la existencia de dichos puntos para aplicaciones definidas en un espacio métrico y bajo condiciones que no son invariantes al pasar a métricas equivalentes. En este aspecto, el ...
Artículo
Qualitative and quantitative properties for the space ℓp,q
(University of Houston, 1996)
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 ...
Artículo
Some geometric properties concerning fixed point theory
(Universidad Complutense de Madrid, 1996)
The Fixed Point Theory for nonexpansive mappings is strongly based upon the geometry of the ambient Banach space. In section 1 we state the role which is played by the multidimensional convexity and smoothness in this ...
Tesis Doctoral
Tesis Doctoral
Relaciones entre operadores asociados a distintas medidas de no compacidad
(1993-09-13)
El objeto fundamental del trabajo es investigar las relaciones existentes entre operadores contractivos para distintas medidas de no compacidad en base a las propiedades geométricas del espacio subyacente, para ello se ...
Artículo
The τ-fixed point property for nonexpansive mappings
(1998)
Let X be a Banach space and τ a topology on X. We say that X has the τ-fixed point property (τ-FPP) if every nonexpansive mapping T defined from a bounded convex τ-sequentially compact subset C of X into C has a fixed ...