2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/174684In this paper we obtain a Poitou-Tate exact sequence for finite and flat group schemes over a global function field. We also extend the duality theorems for 1-motives over number fields obtained by D.Harari and T.Szamuely to the function field case.33 pages. Final version to appear in printNumber TheoryAlgebraic Geometry11G35, 14G25text