2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/152649Invited lecture at the International Congress of Mathematicians, Zuerich, August 3-11, 1994 (extended version), reviews free field realizations of affine Kac-Moody and W-algebras and their applications.20 pagesHigh Energy Physics - TheoryQuantum AlgebraFree field realizations in representation theory and conformal field theorytext