2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/60977In this note we make several observations concerning symplectic cobordisms. Among other things we show that every contact 3-manifold has infinitely many concave symplectic fillings and that all overtwisted contact 3-manifolds are ``symplectic cobordism equivalent.''8 pagesSymplectic GeometryDifferential GeometryGeometric Topology53C15; 57M50text