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arXiv 1903.00524math.PR
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关于复参数Biggins鞅的$L^p$ -收敛性

On $L^p$-convergence of the Biggins martingale with complex parameter

Alexander Iksanov, Xingang Liang, Quansheng Liu

摘要:

证明了超临界分支随机游动中复参数Biggins鞅的$L^p$ -收敛性,即$p>1$的充要条件.结果及其证明比实参数Biggins鞅的结果复杂得多(特别是在$p\in (1,2)$情形下).我们的条件仅在$p\geq 2$情况下是最终的。

英文摘要:

We prove necessary and sufficient conditions for the $L^p$-convergence, $p>1$, of the Biggins martingale with complex parameter in the supercritical branching random walk. The results and their proofs are much more involved (especially in the case $p\in (1,2)$) than those for the Biggins martingale with real parameter. Our conditions are ultimate in the case $p\geq 2$ only.

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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