U-CONVEXITY OF ψ-DIRECT SUMS OF BANACH SPACES

被引:0
|
作者
Mitani, Ken-Ichi [1 ]
机构
[1] Niigata Inst Technol, Fac Engn, Dept Appl Chem & Biotechnol, Kashiwazaki 9451195, Japan
关键词
U-convexity; absolute norm; direct sum; ABSOLUTE NORMS; SMOOTHNESS;
D O I
暂无
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We shall characterize the U-convexity of the psi-direct sum (X(1) circle minus...circle minus Xn)psi X(n))psi of Banach spaces X(1),...,X(n), where psi is a continuous convex function on Delta(n)(= {(t(1), t(2),..., t(n-1)) is an element of R(n-1) : t(j) >= 0 (for all j)(,) Sigma(n-1)(j=1) t(j) <= 1}) with some appropriate conditions.
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页码:199 / 213
页数:15
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