Displaying similar documents to “The existence of nonclassical asymptotic expansion of the trace of a heat kernel for a degenerate elliptic operator.”

A mean-value lemma and applications

Alessandro Savo (2001)

Bulletin de la Société Mathématique de France

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We control the gap between the mean value of a function on a submanifold (or a point), and its mean value on any tube around the submanifold (in fact, we give the exact value of the second derivative of the gap). We apply this formula to obtain comparison theorems between eigenvalues of the Laplace-Beltrami operator, and then to compute the first three terms of the asymptotic time-expansion of a heat diffusion process on convex polyhedrons in euclidean spaces of arbitrary dimension....