Reflexion Discontinue et Systemes Stochastiques

Abstract

We show the existence and uniqueness of the solution of stochastic equations of reflection on $\mathbb{R}^+_n$ associated to semimartingales with right continuous and left limited paths. This result is used to prove the existence and uniqueness of a Markov process associated with a boundary condition of Neumann type with degenerate infinitesimal generator.