2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/51435By studying cohomological quantum mechanics on the punctured plane,we were led to identify (reduced) Bessel functions with homotopic loops living on the plane.This identification led us to correspondence rules between exponentials and Bessel functions.The use of these rules makes us retrieve known but also new formulas in Bessel functions theory.11 pages .Latex2e.Talk given at Group24 Paris 15-20 July 2002High Energy Physics - Theorytext