Abstract
The purpose of this paper is to give a new approach to the Malliavin calculus of variations using martingale techniques. The first part of the paper is devoted to the proof of an integration by parts formula, which is closely related to a martingale representation result of Haussmann. The second part of the paper is devoted to the proof of the existence of densities for the semi-group of a diffusion under slightly more general conditions than Malliavin, and the existence of densities for the resolvent operators under the general conditions of Hörmander.
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BISMUT J.M.: Martingales, the Malliavin calculus and hypoellipticity under general Hörmander's conditions. To appear.
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© 1981 Springer-Verlag
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Bismut, JM. (1981). Martingales, the Malliavin calculus and Hörmander's theorem. In: Williams, D. (eds) Stochastic Integrals. Lecture Notes in Mathematics, vol 851. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0088724
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DOI: https://doi.org/10.1007/BFb0088724
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