Functional differential equations driven by cà dlà g rough paths

Abstract

The existence of unique solutions is established for rough differential equations (RDEs) with path-dependent coefficients and driven by cà dlà g rough paths. Moreover, it is shown that the associated solution map, also known as Itô-Lyons map, is locally Lipschitz continuous. These results are then applied to various classes of rough differential equations, such as controlled RDEs and RDEs with delay, as well as stochastic differential equations with delay. To that end, a joint rough path is constructed for a cà dlà g martingale and its delayed version, that corresponds to stochastic Itô integration.

34 pages