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Approximation of Euler–Maruyama for one-dimensional stochastic differential equations involving the local times of the unknown process

  • Mohsine Benabdallah , Youssfi Elkettani and Kamal Hiderah EMAIL logo
Published/Copyright: October 25, 2016

Abstract

In this paper, we consider both, the strong and weak convergence of the Euler–Maruyama approximation for one-dimensional stochastic differential equations involving the local times of the unknown process. We use a transformation in order to remove the local time Lta from the stochastic differential equations of type

Xt=X0+0tφ(Xs)𝑑Bs+ν(da)Lta.

Here B is a one-dimensional Brownian motion, φ: is a bounded measurable function, and ν is a bounded measure on . We provide the approximation of Euler–Maruyama for the stochastic differential equations without local time. After that, we conclude the approximation of Euler–Maruyama Xtn of the above mentioned equation, and we provide the rate of strong convergence Error=𝔼|XT-XTn|, and the rate of weak convergence Error=𝔼|G(XT)-G(XTn)|, for any function G: of bounded variation.

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Received: 2016-2-5
Accepted: 2016-9-24
Published Online: 2016-10-25
Published in Print: 2016-12-1

© 2016 by De Gruyter

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