THE DIFFERENTIATION OF HYPOELLIPTIC DIFFUSION SEMIGROUPS Contents 1. Introduction 1 2. Hypoellipticity and the Malliavin Covaria
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PDF) Curvature terms in small time heat kernel expansion for a model class of hypoelliptic H\"{o}rmander operators
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Hypoelliptic Estimates and Spectral Theory for Fokker-Planck Operators and Witten Laplacians (Lecture Notes in Mathematics, 1862): Nier, Francis, Helffer, Bernard: 9783540242000: Amazon.com: Books
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A proof of the hypoellipticity of formally hypoelliptic differential operators - Peetre - 1961 - Communications on Pure and Applied Mathematics - Wiley Online Library
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