Hypoelliptic Estimates and Spectral Theory for Fokker-Planck Operators and Witten Laplacians - Helffer, Bernard; Nier, Francis; SpringerLink (Online service) (Berlin Heidelberg : Springer-Verlag GmbH., 2005)
Keywords: Hypoelliptic operators; Spectral theory (Mathematics); Mathematics; Global Analysis and Analysis on Manifolds; Partial Differential Equations; Quantum Physics; Statistics for Engineering, Physics, Computer Science, Chemistry & Geosciences