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[期刊论文] 作者:ZengRenying, 来源:数学研究 年份:1994
Let X be a real Banach space. We prove that norms is uniformly Frechét differentiable if and only if limr→0+sup(u,v∈s 0<‖u-v‖)(1-‖u+v‖/2)/‖u-v‖=0....
[期刊论文] 作者:ZengRenying, 来源:数学研究 年份:1994
In this paper, We show that X" is complex strictly convex if and only if every quotient subspace of X is complex smooth, This extends a main theorem in [1]....
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