The divergence of Banach space valued random variables on Wiener space

被引:8
|
作者
Mayer-Wolf, E [1 ]
Zakai, M
机构
[1] Technion Israel Inst Technol, Dept Math, IL-32000 Haifa, Israel
[2] Technion Israel Inst Technol, Dept Elect Engn, IL-32000 Haifa, Israel
关键词
abstract Wiener space; divergence; flows;
D O I
10.1007/s00440-004-0397-0
中图分类号
O21 [概率论与数理统计]; C8 [统计学];
学科分类号
020208 ; 070103 ; 0714 ;
摘要
The domain of definition of the divergence operator delta on an abstract Wiener space (W, H, mu) is extended to include W - valued and W x W - valued "integrands". The main properties and characterizations of this extension are derived and it is shown that in some sense the added elements in delta' s extended domain have divergence zero. These results are then applied to the analysis of quasiinvariant flows induced by W-valued vector fields and, among other results, it turns out that these divergence-free vector fields "are responsible" for generating measure preserving flows.
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页码:291 / 320
页数:30
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