2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69244In this articel we describe the first 2-descent on Pell conics, and compute the associated 2-part of the Tate-Shafarevich group.20 pagesNumber TheoryHistory and Overview11D09; 11R11Higher Descent on Pell Conics III. The First 2-Descenttext