Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4664618 | Acta Mathematica Scientia | 2011 | 6 Pages |
Abstract
We present a short and simple proof of the recent result of Yang and Wang [12]. Stimulated by their idea, two geometric parameters and , both related to Gao's modulus of U-convexity of a Banach space X, are introduced. Their properties and the relationships with normal structure are studied. Some existing results involving normal structure and fixed points for non-expansive mappings in Banach spaces are improved.
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Mathematics
Mathematics (General)