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Reverse monotone approximation property
被引:0
|作者:
Oikhberg, Timur
[1
]
机构:
[1] Univ Calif Irvine, Dept Math, Irvine, CA 92697 USA
来源:
关键词:
metric approximation properties;
rearrangement invariant spaces;
non-commutative function spaces;
Schatten spaces;
renorming;
SPACES;
D O I:
暂无
中图分类号:
O1 [数学];
学科分类号:
0701 ;
070101 ;
摘要:
A Banach space X is said to have the Reverse Monotone Approximation Property (RMAP) if there exists a net of finite rank operators (T-alpha) on X, converging to the identity point-norm, and such that lim(alpha) parallel to I-X - T-alpha parallel to = 1. We show that the RMAP is rare among "naturally occurring" Banach spaces. For instance, any separable rearrangement invariant function space with the RMAP is isometric to L-2. Similar results are obtained in the non-commutative setting. On the other hand, any separable Banach space with the Commuting Bounded Approximation Property can be renormed to have the RMAP.
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页码:197 / 206
页数:10
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