“…In recent years, the three critical points theorem of B. Ricceri has been widely used to solve differential equations, see [1,2,3,5,6,7,9,12,13] and reference therein.…”
In this paper, the existence of at least three solutions to a Navier boundary problem involving the p-biharmonic equation, will be established. The technical approach is mainly based on the three critical points theorem of B. Ricceri.
“…In recent years, the three critical points theorem of B. Ricceri has been widely used to solve differential equations, see [1,2,3,5,6,7,9,12,13] and reference therein.…”
In this paper, the existence of at least three solutions to a Navier boundary problem involving the p-biharmonic equation, will be established. The technical approach is mainly based on the three critical points theorem of B. Ricceri.
“…Theorems 1 and 2 have been successfully employed to establish the existence of at least three solutions for perturbed boundary value problems in the papers [5,6,17].…”
The existence of three distinct periodic solutions for a class of perturbed impulsive Hamiltonian systems is established. The techniques used in the proofs are based on variational methods.
We deal with a perturbed eigenvalue Dirichlet-type problem for an elliptic hemivariational inequality involving the p-Laplacian. We show that an appropriate oscillating behaviour of the nonlinear part, even under small perturbations, ensures the existence of infinitely many solutions. The main tool in order to obtain our abstract results is a recent critical-point theorem for nonsmooth functionals.
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