科研之友
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摘要
Given a normed space X it can be easily proven that every extreme point in B-X*, the unit ball of X*, is the restriction of an extreme point in B-X***. Our purpose is to study when the restrictions of extreme points in B-X*** are extreme points in B-X*. Namely, we characterize L-1-preduals satisfying the aforementioned property.
- 出版日期2013-3
