2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/78464An approach for the computation of upper bounds on the size of large complete arcs is presented. We obtain in particular geometrical properties of irreducible envelopes associated to a second largest complete arc provided that the order of the underlying field is large enough. We use Stoehr-Voloch's approach to the Hasse-Weil bound for rational points of curves defined over finite fields15 pages, LaTex2eAlgebraic GeometryPC: 05B SC: 14Gtext