Weak closures and derived sets in dual Banach spaces
Weak closures and derived sets in dual Banach spaces
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对偶 Banach 空间中的弱闭包和派生集
DOI:
10.1285/i15900932v31n1p129
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
M. Ostrovskii
中科院分区:
文献类型:
--
作者:
M. Ostrovskii
The main results of the paper: \textbf{(1)} The dual Banach space contains a linear subspace such that the set of all limits of weak convergent bounded nets in is a proper norm-dense subset of if and only if is a non-quasi-reflexive Banach space containing an infinite-dimensional subspace with separable dual. \textbf{(2)} Let be a non-reflexive Banach space. Then there exists a convex subset such that (the latter denotes the weak closure of ). \textbf{(3)} Let be a quasi-reflexive Banach space and be an absolutely convex subset. Then .