arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2008.02335math.PRmath.CA
收藏

加性噪声下乘性偏微分方程的正则化

Regularization of multiplicative SDEs through additive noise

Lucio Galeati, Fabian A. Harang

摘要:

研究了一类具有乘性分数布朗运动(fBm)的偏微分方程的正则化效应.传统上,对漂移和扩散系数施加Lipschitz要求,以确保解的存在性和唯一性。我们发现,适当的扰动恢复所得到的方程的存在性,唯一性和规律性的流动,即使当漂移和扩散系数分布,从而扩展程序的正则化噪声乘法的情况下的SDES。我们的方法依赖于一个组合的非线性杨氏形式主义开发的Catellier和Gubinelli,和随机平均估计最近获得的Hairer和李。

英文摘要:

We investigate the regularizing effect of certain additive continuous perturbations on SDEs with multiplicative fractional Brownian motion (fBm). Traditionally, a Lipschitz requirement on the drift and diffusion coefficients is imposed to ensure existence and uniqueness of the SDE. We show that suitable perturbations restore existence, uniqueness and regularity of the flow for the resulting equation, even when both the drift and the diffusion coefficients are distributional, thus extending the program of regularization by noise to the case of multiplicative SDEs. Our method relies on a combination of the non-linear Young formalism developed by Catellier and Gubinelli, and stochastic averaging estimates recently obtained by Hairer and Li.

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。

↑