Stochastic averaging for stochastic differential equations driven by fractional Brownian motion and standard Brownian motion

In this paper, an averaging principle for multidimensional, time dependent, stochastic differential equations (SDEs) driven by fractional Brownian motion and standard Brownian motion was established. We combined the pathwise approach with the Ito stochastic calculus to handle both types of integrals involved and proved that the original SDEs can be approximated by averaged SDEs in the manner of mean square convergence. (C) 2019 Elsevier Ltd. All rights reserved.