赋序列范数的矢值Banach序列空间ss(E)的凸性

Rotundity of Vector-valued Banach Squence Spaces Equipped with Sequential Norms

本文对赋序列范数的矢值Banach序列空间ss(E)的一些凸性进行了讨论,得到的主要结果如下: 1.ss(E)是局部一致凸的当且仅当ss和E是局部一致凸的; 2.ss(E)是强凸的当且仅当ss和E是强凸的; 3.设ss和ss*具有AK性质,则ss(E)是非常凸的当且仅当ss和E是非常凸的.

In this paper, some convex properties of vector-valued Banach sequence spaces equipped with sequential norms are discussed. The main results are summarized as follows:1. ss(E) is locally uniformly rotund if and only if ss and E are locally uniformly rotund;2. ss(E) is strongly rotund if and only if ss and E are strongly rotund;3. Let ss and ss* have AK property, then ss(E) is very rotund if and only if ss and E are very rotund.