Proceedings of the Indian Academy of Sciences - Mathematical Sciences, ( ISI ), Volume (115), No (2), Year (2005-4) , Pages (201-207)

Title : ( A note on convex renorming and fragmentability )

Authors: Seyyed Alireza Kamel Mirmostafaee ,

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Abstract

Abstract Using the game approach to fragmentability, we give new and simpler proofs of the following known results: (a) If the Banach space admits an equivalent Kadec norm, then its weak topology is fragmented by a metric which is stronger than the norm topology. (b) If the Banach space admits an equivalent rotund norm, then its weak topology is fragmented by a metric. (c) If the Banach space is weakly locally uniformly rotund, then its weak topology is fragmented by a metric which is stronger than the norm topology.

Keywords

, Keywords Fragmentability of Banach spaces , topological games , renorming of Banach spaces