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Weak convergence of the Stratonovich integral with respect to a class of Gaussian processes
Authors:Daniel Harnett  David Nualart
Institution:Department of Mathematics, University of Kansas, 405 Snow Hall, Lawrence, KS 66045-2142, United States
Abstract:For a Gaussian process XX and smooth function ff, we consider a Stratonovich integral of f(X)f(X), defined as the weak limit, if it exists, of a sequence of Riemann sums. We give covariance conditions on XX such that the sequence converges in law. This gives a change-of-variable formula in law with a correction term which is an Itô integral of f?f? with respect to a Gaussian martingale independent of XX. The proof uses Malliavin calculus and a central limit theorem from Nourdin and Nualart (2010) 8]. This formula was known for fBm with H=1/6H=1/6 Nourdin et al. (2010) 9]. We extend this to a larger class of Gaussian processes.
Keywords:Itô  formula  Skorohod integral  Malliavin calculus  Fractional Brownian motion
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