Diffusion approximation for fully coupled stochastic differential equations
نویسندگان
چکیده
We consider a Poisson equation in Rd for the elliptic operator corresponding to an ergodic diffusion process. Optimal regularity and smoothness with respect parameter are obtained under mild conditions on coefficients. The result is then applied establish general approximation fully coupled multitime scales stochastic differential equations only Hölder continuous Four different averaged as well rates of convergence obtained. Moreover, shown rely regularities coefficients slow variable does not depend their fast component.
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ژورنال
عنوان ژورنال: Annals of Probability
سال: 2021
ISSN: ['0091-1798', '2168-894X']
DOI: https://doi.org/10.1214/20-aop1475