The Helmholtz Conditions for the Difference Equations Systems

Dumitru Cr˘, Dumitru Opri¸s
unpublished
This paper present the analogous of the Helmholtz conditions for first and second order difference equations systems. We obtain variational implicit algoritms used in numerical analysis and numerical integration schemes for Hamilton systems. We give some representative examples. Mathematics Subject Classification: 70H05, 39A12
fatcat:a6xbaudjp5fbhgwwhbzlcendai