On Green's Functions and Positive, Self-Adjoint, Elliptic Differential Operators

Abstract

This paper is being replaced by another of the author's that contains a brief summary of the problem of positivity of Green's functions, heat kernels, and principal eigenvalues of higher-order elliptic differential operators.

This paper has been withdrawn by the author. Replaced by arXiv:1003.5848, "On Green's functions for positive, self-adjoint, elliptic pseudo-differential operators on closed, Riemannian manifolds"