2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/209776The purpose of this work is to give a new and short proof of Atiyah-Singer local index theorem by using heat semigroups approximations based on the truncature of Brownian Chen series.31 pagesProbabilityAnalysis of PDEsChen series and Atiyah-Singer index theoremtext