2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/79128We outline the construction of invariants of Hamiltonian group actions on symplectic manifolds. These invariants can be viewed as an equivariant version of Gromov-Witten invariants. They are derived from solutions of a PDE involving the Cauchy-Riemann operator, the curvature of a connection, and the moment map.55 pages, no figuresSymplectic GeometryGeometric Topology53C15; 53C07text