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Paper detail

Pathwise Itô Calculus for Rough Paths and Rough PDEs with Path Dependent Coefficients

This paper introduces the path derivatives, in the spirit of Dupire's functional Itô calculus, for the controlled paths in the rough path theory with possibly non-geometric rough paths. The theory allows us to deal with rough integration and rough PDEs in the same manner as standard stochastic calculus. We next study rough PDEs with coefficients depending on the rough path itself, which corresponds to stochastic PDEs with random coefficients. Such coefficients is less regular in the time variable and is not covered in the existing literature. The results are useful for studying viscosity solutions of stochastic PDEs.

preprint2014arXivOpen access
Christian KellerJianfeng Zhang
math.APmath.PR
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Christian KellerJianfeng Zhang

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