Factorization in quantum field theory: an exercise in Hopf algebras and local singularities

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51954I discuss the role of Hochschild cohomology in Quantum Field Theory with particular emphasis on Dyson--Schwinger equations.20 p., Contributed to "Frontiers in Number Theory, Physics and Geometry", Les Houches, March 2003 (minor typos corrected)High Energy Physics - TheoryQuantum AlgebraFactorization in quantum field theory: an exercise in Hopf algebras and local singularitiestext