Differential Equations & Applications · Volume 6, Issue 4 Existence of a non-trivial solution for nonlinear difference equations 06-30 Pages 517-525 DOI 10.7153/dea-06-30 Downloads Short PDF Full PDF PNG Authors Mohsen Khaleghi Moghadam Shapour Heidarkhani Keywords discrete nonlinear boundary value problem non trivial solution variational methods critical point theory Subject classes 39A10 34B15