Infinitely many solutions for a nonlinear Navier problem involving the p-biharmonic operator

In this paper we establish some results of existence infinitely many solutions for an elliptic equation involving the p-biharmonic and p-Laplacian operators coupled with Navier boundary conditions where nonlinearities depend on two real parameters do not satisfy any symmetric condition. The nature approach is variational main tool abstract result Ricceri. novelty in application use a class test functions which makes assumptions data easier to verify.