Muñoz Masqué, JaimePozo Coronado, Luis MiguelAndrica, DorinBlaga, Paul A.Moroianu, Sergiu2023-06-202023-06-202006973-610429-Xhttps://hdl.handle.net/20.500.14352/53248We summarize und analyze several results concerning the variational character of a set of first order quasi-linear PDEs. A local characterization of the problem is given, and the global obstructions to the problem are obtained.Inverse problem in the calculus of variations in the first-order quasi-linear case.book partmetadata only access517.9Ecuaciones diferenciales1202.07 Ecuaciones en Diferencias