2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/117836We give an elementary proof of the Mazur-Tate-Teitelbaum conjecture for elliptic curves by using Kato's element.9 pages, dedecated to Professor John Coates on the occasion of his sixtieth birthdayNumber Theory11G07, 11G40text