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Discrete time approximation for continuously and discretely reflected BSDE's

Chassagneux, Jean-François; Bouchard, Bruno (2008), Discrete time approximation for continuously and discretely reflected BSDE's, Stochastic Processes and their Applications, 118, 12, p. 2269-2293. http://dx.doi.org/10.1016/j.spa.2007.12.007

Type
Article accepté pour publication ou publié
Date
2008
Journal name
Stochastic Processes and their Applications
Volume
118
Number
12
Publisher
Elsevier
Pages
2269-2293
Publication identifier
http://dx.doi.org/10.1016/j.spa.2007.12.007
Metadata
Show full item record
Author(s)
Chassagneux, Jean-François
Bouchard, Bruno
Abstract (EN)
We study the discrete-time approximation of the solution (Y,Z,K) of a reflected BSDE. As in Ma and Zhang [J. Ma, J. Zhang, Representations and regularities for solutions to BSDEs with reflections, Stochastic Processes and their Applications 115 (2005) 539–569], we consider a Markovian setting with a reflecting barrier of the form h(X) where X solves a forward SDE. We first focus on the discretely reflected case. Based on a representation for the Z component in terms of the next reflection time, we retrieve the convergence result of Ma and Zhang [J. Ma, J. Zhang, Representations and regularities for solutions to BSDEs with reflections, Stochastic Processes and their Applications 115 (2005) 539–569] without their uniform ellipticity condition on X. These results are then extended to the case where the reflection operates continuously. We also improve the bound on the convergence rate when View the MathML source with the Lipschitz second derivative.
Subjects / Keywords
Discrete-time approximation schemes; Numerical Probability

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