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Limit Theorem for a Rough Differential Equation with a Negative Long-Range Random Coefficient

Article scientifique 2023 Anglais

Résumé

Abstract We consider an ordinary differential equation driven by rough paths, in the T. Lyons sense \cite{Ly}, depending on a small parameter and with a negative long-range random coefficient. We establish sufficient conditions under which the solution of this ordinary differential equation converges to the solution of a stochastic differential equation driven by a fractional Brownian motion with Hurst parameter \(H\in( \frac{1}{4},\frac{1}{2})\), depends on the asymptotic behavior of the covariance function of the random coefficient.

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Bedhiafi, M., Gaidi, M. (2023). Limit Theorem for a Rough Differential Equation with a Negative Long-Range Random Coefficient. https://doi.org/10.21203/rs.3.rs-2921196/v1

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