2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/103822The basic aim is to extend some results and concepts of non-autonomous second order differential systems with convex potentials to the new context of multi-time Poisson-gradient PDE systems with convex potential. In this sense, we prove that minimizers of a suitable action functional are multiple periodical solutions of a Dirichlet problem associated to the Euler-Lagrange equations. Automatically, these are solutions of the associated multi-time Hamiltonian equations.Proceedings of The 3-rd International Colloquium "Mathematics in Engineering and Numerical Physics", October 7-9, 2004, University Politehnica of Bucharest, BSG Proceedings 12, Geometry Balkan Press (2005), 128-136Dynamical SystemsAnalysis of PDEs35J50, 35J55text