2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77959We express the comultiplication of the generators in Drinfelds second realization of the quantum affine algebra U_q(sl_2^), induced by the comultiplication of the generators in the Drinfeld-Jimbo realization of U_q(sl_2^) in terms of generating functions. Then we find explicit expressions for the comultiplication of the generators.28 pages, LaTexQuantum Algebra81R50text