Operator-valued martingale transforms and R-boundedness

被引:8
|
作者
Girardi, M [1 ]
Weis, L
机构
[1] Univ S Carolina, Dept Math, Columbia, SC 29208 USA
[2] Univ Karlsruhe, Inst Math 1, D-76128 Karlsruhe, Germany
关键词
D O I
10.1215/ijm/1258138030
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
Banach space X-valued martingale transforms by a B(X)-valued multiplier sequence are bounded on L-p(X), where 1 < p < infinity and X is a UMD space, if and only if the multiplier sequence is pointwise R-bounded. This is also true for unconditionally convergent martingales in arbitrary Banach spaces.
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页码:487 / 516
页数:30
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