%0 Journal Article
%T Factorization in quantum field theory: an exercise in Hopf algebras and local singularities
%A Dirk Kreimer
%J Mathematics
%D 2003
%I arXiv
%X I discuss the role of Hochschild cohomology in Quantum Field Theory with particular emphasis on Dyson--Schwinger equations.
%U http://arxiv.org/abs/hep-th/0306020v3