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arXiv 1601.04880math.PR
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代数结构与Levy过程驱动的随机微分方程

Algebraic Structures and Stochastic Differential Equations driven by Levy processes

Charles Curry, Kurusch Ebrahimi-Fard, Simon J. A. Malham, Anke Wiese

摘要:

对Levy过程驱动的随机微分系统构造了一个有效的积分器。一个有效的积分器是一个强近似,比相应的随机泰勒近似更准确,所有的订单和独立的控制向量场。只要驱动过程具有所有阶的矩,并且向量场足够光滑,这就成立。此外,有效的积分器的问题是最佳的半整数全局均方根阶收敛的扰动范围内广泛的一类。利用独立Levy过程多重迭代积分的拟混洗代数得到了这些结果。

英文摘要:

We construct an efficient integrator for stochastic differential systems driven by Levy processes. An efficient integrator is a strong approximation that is more accurate than the corresponding stochastic Taylor approximation, to all orders and independent of the governing vector fields. This holds provided the driving processes possess moments of all orders and the vector fields are sufficiently smooth. Moreover the efficient integrator in question is optimal within a broad class of perturbations for half-integer global root mean-square orders of convergence. We obtain these results using the quasi-shuffle algebra of multiple iterated integrals of independent Levy processes.

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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