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arXiv 2409.07052math.PRmath.OC
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含分数阶拉普拉斯算子的倒向随机偏微分方程及其在由Lévy过程驱动的部分观测系统随机最优控制中的应用

Fractional Backward Stochastic Partial Differential Equations with Applications to Stochastic Optimal Control of Partially Observed Systems driven by Lévy Processes

Yuyang Ye, Yunzhang Li, Shanjian Tang

AI总结:

本文研究含分数阶拉普拉斯算子的倒向随机偏微分方程的柯西问题,证明了两类方程的强解存在唯一性与适定性,并将其应用于α-稳定Lévy过程驱动的部分观测系统随机最优控制研究。

摘要:

本文研究了含分数阶拉普拉斯算子的倒向随机偏微分方程(BSPDEs)的柯西问题。首先,利用鞅表示定理和分数阶热核,我们构造了系数不随空间变化的分数阶BSPDEs解的显式形式,从而证明了强解的存在唯一性。随后,结合冻结系数法与延拓法,我们建立了系数依赖时空变量的一般分数阶BSPDEs的Hölder估计与适定性。作为应用,我们使用分数阶伴随BSPDEs研究了由α-稳定Lévy过程驱动的部分观测系统的随机最优控制问题。

英文摘要:

In this paper, we study the Cauchy problem for backward stochastic partial differential equations (BSPDEs) involving fractional Laplacian operator. Firstly, by employing the martingale representation theorem and the fractional heat kernel, we construct an explicit form of the solution for fractional BSPDEs with space invariant coefficients, thereby demonstrating the existence and uniqueness of strong solution. Then utilizing the freezing coefficients method as well as the continuation method, we establish Hölder estimates and well-posedness for general fractional BSPDEs with coefficients dependent on space-time variables. As an application, we use the fractional adjoint BSPDEs to investigate stochastic optimal control of the partially observed systems driven by $α$-stable Lévy processes.

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