Systematic renormalization at all orders in the DiffRen and improved Epstein-Glaser schemes

Abstract

Proceeding by way of examples, we update the combinatorics of the treatment of Feynman diagrams with subdivergences in differential renormalization from more recent viewpoints in Epstein--Glaser renormalization in $x$-space.

arXiv commentLatex, 10 pages. Contribution to the Proceedings of the conference "Quantum Mathematical Physics", Regensburg, Sept 29 -- Oct 2, 2014