2021/04/03 by Dong Zhao, Dong, Zhao, Zuohuan Zheng +3
Engineering · Economics, Econometrics and Finance · Decision Sciences · #Stability and Controllability of Differential Equations #Stochastic processes and financial applications #Probabilistic and Robust Engineering Design
paper · pdf · doi:10.48550/arxiv.2104.01423
In this paper, we study the existence of random periodic solutions for nonlinear stochastic differential equations with additive white noise. We extend the input-to-state characteristic operator of the system to the non-autonomous stochastic differential equation via the pull-back of the discretised stochastic differential equation. We then use the completeness of the measurable function space which we construct skillfully and the Banach fixed point theorem to prove the existence of a fixed point of the gain operator. And we prove that the image for the input-to-state characteristic operator at this fixed point is a random periodic solution for the forward stochastic flow generated by the non-autonomous stochastic differential equation. Finally, we present some examples.