Given a normed space X it can be easily proven that every extreme point in Bx＊, the unit ball of X＊, is the restriction of an extreme point in Bx Our purpose is to study when the restrictions of extreme points in B...Given a normed space X it can be easily proven that every extreme point in Bx＊, the unit ball of X＊, is the restriction of an extreme point in Bx Our purpose is to study when the restrictions of extreme points in Bx＊＊＊ are extreme points in Bx＊. Namely, we characterize Ll-preduals satisfying the aforementioned property.展开更多
基金Supported by Ministerio de Ciencia e Innovación and Junta de Andalucía Projects (Grant Nos. MTM2009-07498, MTM2010-17687 and FQM-3737)
文摘Given a normed space X it can be easily proven that every extreme point in Bx＊, the unit ball of X＊, is the restriction of an extreme point in Bx Our purpose is to study when the restrictions of extreme points in Bx＊＊＊ are extreme points in Bx＊. Namely, we characterize Ll-preduals satisfying the aforementioned property.
