2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99182We discuss in an introductory manner structural similarities between the polylogarithm and Green functions in quantum field theory.15p, contributed to the proceedings of the {\em Workshop on Noncommutative Geometry and Number Theory}, August 18-22 2003, Max Planck Institut für Mathematik, Bonn. References updated, typos correctedHigh Energy Physics - TheoryQuantum Algebratext