2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/39169The tree formula, which relates proper and connected vertices, is shown to be the solution to a Hamilton-Jacobi equation.7 pages LaTeX2e (uses feynmf)High Energy Physics - LatticeHamilton-Jacobi Equation and the Tree Formula for Proper Verticestext