2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/162221This is a survey paper on the space of symplectic structures on closed 4-manifolds, for the Proceedings ICCM 200421 pages; More accurate references in sections 3.3, 3.4 and 4.1; References modified in section 3Symplectic GeometryAlgebraic GeometryDifferential GeometryGeometric TopologyThe Space of Symplectic Structures on Closed 4-Manifoldstext