How useful can knot and number theory be for loop calculations?

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/55552We summarize recent results connecting multiloop Feynman diagram calculations to different parts of mathematics, with special attention given to the Hopf algebra structure of renormalization.Talk given at the workshop "Loops and Legs in Gauge Theories", Rheinsberg, April 1998. Latex, 10p, uses epsf for 5 figuresHigh Energy Physics - TheoryHow useful can knot and number theory be for loop calculations?text