JIPAM

A Note on the Modulus of $U$-Convexity and Modulus of $W^*$-Convexity  
 
  Authors: Zhanfei Zuo, Yunan Cui,  
  Keywords: Modulus of U-convexity; Modulus of W*-convexity; Coefficient of weak orthogonality; Uniform normal structure; Fixed point.  
  Date Received: 29/07/08  
  Date Accepted: 13/11/08  
  Subject Codes:

46B20

  
  Editors: Sever S. Dragomir,  
 
  Abstract:

We present some sufficient conditions for which a Banach space $ X$ has normal structure in term of the modulus of $ U$-convexity, modulus of $ W^*$-convexity and the coefficient of weak orthogonality. Some known results are improved. ;


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