Differential Equations & Applications · Volume 8, Issue 3 Existence of solutions for an elliptic boundary value problem via a global minimization theorem on Hilbert spaces 08-21 Pages 385-391 DOI 10.7153/dea-08-21 Downloads Short PDF Full PDF PNG Authors Souad Ayadi Toufik Moussaoui Donal O'Regan Keywords minimization theorem Hilbert spaces nonexpansive potential operator BVP Subject classes 74G65 46C05 47H09 47G40