摘要
讨论了当 1<p<+∞时 ,一致凸Banach空间X的一个特征不等式 : >0 , δ(,p) >0 ,当x∈M(M是X的任意一个有界集 ) ,y∈X且‖x -y‖ ≥时 ,有‖ x+y2 ‖p <(1-δ(,p) ) ‖x‖p +‖y‖ p2 ,并将此结果推广到局部一致凸空间的情形 .
In this paper, we discuss a character inequality in a uniformly convex Banach space with 1< p <+∞: >0 , there exists δ(,p)>0 , and when x∈M(M a bounded subset of X ), y∈X satisfying ‖x-y‖≥, we have ‖x+y2‖ p<(1-δ(,p))‖x‖ p+‖y‖ p2.Moreover, we establish a corresponding result in the locally uniformly convex Banach space.
出处
《四川师范大学学报(自然科学版)》
CAS
CSCD
2002年第2期151-153,共3页
Journal of Sichuan Normal University(Natural Science)