2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/179713We study the fifth term in the asymptotic expansion of the heat operator trace for a partial differential operator of Laplace type on a compact Riemannian manifold with Dirichlet or Neumann boundary conditions.AMSTeX, 16 pages, no figures, to appear in Bolletino dell'Unione Mathematica ItalianoHigh Energy Physics - Theorytext