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arXiv math/9412211math.FA
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关于条件期望算子的收敛性

On Convergence of Conditional Expectation Operators

C. Bryan Dawson

摘要:

给定运算符$T:U_X(Σ)\to Y$或${T:U(Σ)\to Y$,可以考虑由划分$π$的细化指导的条件期望运算符$(T_π)$的网。先前已经表明,$(T_π)$并不总是收敛于$T$。本文给出了这种收敛性发生的几个条件,包括当$X={\bold R}$或当$X\sp *$具有Radon-Nikodym性质时的完全刻画.

英文摘要:

Given an operator $T:U_X(Σ)\to Y$ or ${T:U(Σ)\to Y$, one may consider the net of conditional expectation operators $(T_π)$ directed by refinement of the partitions $π$. It has been shown previously that $(T_π)$ does not always converge to $T$. This paper gives several conditions under which this convergence does occur, including complete characterizations when $X={\bold R}$ or when $X\sp *$ has the Radon-Nikodým property.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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