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arXiv 1707.02889math.PR
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Lévy型过程:收敛和离散格式

Lévy-type processes: convergence and discrete schemes

Mihai Gradinaru, Tristan Haugomat

摘要:

本文利用相关算子的收敛性证明了一类离散时间马氏过程向局部Feller过程的收敛性。将局部Feller过程理论应用于Lévy型过程,得到了离散和连续时间指标过程、模拟方法和Euler格式的收敛结果。我们也将同样的理论应用到一个稍微不同的情况,以得到扩散或随机游动收敛到奇异扩散的结果。由此我们导出了随机介质中的随机游动向随机势中扩散的收敛性。

英文摘要:

We characterise the convergence of a certain class of discrete time Markov processes toward locally Feller processes in terms of convergence of associated operators. The theory of locally Feller processes is applied to Lévy-type processes in order to obtain convergence results on discrete and continuous time indexed processes, simulation methods and Euler schemes. We also apply the same theory to a slightly different situation, in order to get results of convergence of diffusions or random walks toward singular diffusions. As a consequence we deduce the convergence of random walks in random medium toward diffusions in random potential.

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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