2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/225408Renormalized perturbation theory à la BPHZ can be founded on causality as analyzed by H. Epstein and V. Glaser in the seventies. Here, we list and discuss a number of additional constraints of algebraic character some of which have to be considered as parts of the core of the BPHZ framework.16 pagesHigh Energy Physics - Theorytext