2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/148796The purpose of this note is to extend the results of V. Guillemin on elliptic self-adjoint pseudodifferential operators of order one, from operators defined on smooth functions on a closed manifold to operators defined on smooth sections in a vector bundle of Hilbert modules of finite type over a finite von Neumann algebra.11 pages, AMS-Tex, Minor CorrectionsDifferential GeometryAn Extension of the Work of V. Guillemin on Complex Powers and Zeta Functions of Elliptic Pseudodifferential Operatorstext