Renormalized Perturbation Theory: A Missing Chapter

Understand

Renormalized perturbation theory \`a 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.