Solutions to boundary-value problems for second-order impulsive differential equations at resonance.
Periodic solutions for second-order Hamiltonian systems with the p-Laplacian.
Existence and uniqueness of positive solutions for a BVP with a -Laplacian on the half-line.
Existence of multiple positive solutions for discrete problems with -Laplacian via variational methods.
Twin positive solutions for fourth-order two-point boundary-value problems with sign changing nonlinearities.
Existence of three solutions for a class of (p₁,...,pₙ)-biharmonic systems with Navier boundary conditions
We establish the existence of at least three weak solutions for the (p1,…,pₙ)-biharmonic system ⎧ in Ω, ⎨ ⎩ on ∂Ω, for 1 ≤ i ≤ n. The proof is based on a recent three critical points theorem.
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