Locally uniformly rotund points in convex-transitive Banach spaces

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• 作者：Julio Becerra Guerrero ; Á ; ngel Rodrí ; guez Palacios
• 关键词：Locally uniformly rotund point ; Convex-transitive Banach spaces
• 刊名：Journal of Mathematical Analysis and Applications
• 出版年：2009
• 出版时间：1 December 2009
• 年：2009
• 卷：360
• 期：1
• 页码：108-118
• 全文大小：217 K

文摘

Almost transitive superreflexive Banach spaces have been considered in [C. Finet, Uniform convexity properties of norms on superreflexive Banach spaces, Israel J. Math. 53 (1986) 81–92], where it is shown that they are uniformly convex and uniformly smooth. We characterize such spaces as those convex transitive Banach spaces satisfying conditions much weaker than that of uniform convexity (for example, that of having a weakly locally uniformly rotund point). We note that, in general, the property of convex transitivity for a Banach space is weaker than that of almost transitivity.