Critical points and nonlinear variational problems
Teoria di Lusternik-Schnirelman su varietà con bordo negli spazi di Hilbert
On the existence of multiple solutions for a class of nonlinear boundary value problems
Un teorema di esistenza per le equazioni differenziali negli spazi di Banach
Proprietà spettrali di certi operatori lineari non compatti
Funkcionální rovnice v nelineární analýze. Věnováno G. Prodimu, velkému učiteli a drahému příteli.
Le equazioni funzionali in analisi non lineare
A Survey on Systems of Nonlinear Schrödinger Equations
We survey some recent results dealing with some classes of systems of nonlinear Schrödinger equations.
Remarks on a Bifurcation Problem in Fluid Dynamics
We sharpen some previous results of [2, 4], dealing with a bifurcation problem arising in fluid dynamics.
On the Number of Solutions of Some Semilinear Elliptic Problems
We show that a class of semilinear boundary value problems possess exactly one positive solution and one negative solution.
Esistenza di infinite soluzioni per problemi non lineari in assenza di parametro
Consider the variational, non-linear boundary value problem in a bounded open set . If and satisfy suitable conditions (see § 1), we prove that (1) has an infinite number of solutions, which are the critical points of a functional on a suitable manifold. This critical points are studied by means of Lusternik-Schnirelman theory.
Solutions of Minimal Period for a Class of Convex Hamiltonian Systems.
Homoclinics : Poincaré-Melnikov type results via a variational approach
Theorems of existence and multiplicity for nonlinear elliptic problems with noninvertible linear part
Perturbation results for a class of singular Hamiltonian systems
The existence of solutions with prescribed period for a class of Hamiltonian systems with a Keplerian singularity is discussed.
Perturbation results for a class of singular Hamiltonian systems
The existence of solutions with prescribed period for a class of Hamiltonian systems with a Keplerian singularity is discussed.
Perturbation of Hamiltonian Systems with Keplerian Potentials.
Multiple homoclinic orbits for a class of conservative systems
Periodic solutions with prescribed energy for some keplerian -body problems
Non-collision orbits for a class of keplerian-like potentials
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