2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77506In this note I use cup-products and higher Massey products to find topological lower bounds on the number of geometrically distinct critical points of any closed 1-form in a given cohomology class.5 pagesDifferential GeometryAlgebraic TopologySymplectic Geometrytext