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arXiv 0903.3935math.PR
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超临界分支随机游动中内蕴鞅L_p-收敛的指数速度

Exponential rate of L_p-convergence of intrinsic martingales in supercritical branching random walks

Gerold Alsmeyer, Alex Iksanov, Sergej Polotsky, Uwe Roesler

摘要:

设$W_n, n\in\mn_{0}$是超临界分支随机游动中具有几乎必然极限$W$的内禀鞅.我们提供的$L_p$ -收敛的系列$\sum_{n\ge 0} e^{an}(W-W_n)$为$p>1$和$a>0$的标准。该结果可以看作是关于$\me |W-W_n|^p$收敛到零的指数速率的陈述。

英文摘要:

Let $W_n, n\in\mn_{0}$ be an intrinsic martingale with almost sure limit $W$ in a supercritical branching random walk. We provide criteria for the $L_p$-convergence of the series $\sum_{n\ge 0} e^{an}(W-W_n)$ for $p>1$ and $a>0$. The result may be viewed as a statement about the exponential rate of convergence of $\me |W-W_n|^p$ to zero.

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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