Abstract
Consider a multidimensional stochastic differential equation of the form \(X_{t}=x+\int_{0}^{t}b(X_{s-})\,ds+\int_{0}^{t}f(X_{s-})\,dZ_{s}\), where (Z s )s≥0 is a symmetric stable process. Under suitable assumptions on the coefficients, the unique strong solution of the above equation admits a density with respect to Lebesgue measure, and so does its Euler scheme. Using a parametrix approach, we derive an error expansion with respect to the time step for the difference of these densities.
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Konakov, V., Menozzi, S. Weak Error for Stable Driven Stochastic Differential Equations: Expansion of the Densities. J Theor Probab 24, 454–478 (2011). https://doi.org/10.1007/s10959-010-0291-x
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DOI: https://doi.org/10.1007/s10959-010-0291-x