We discuss the existence of closed geodesic on a Riemannian manifold and the existence of periodic solution of second order Hamiltonian systems.
Viene discussa l'esistenza di geodetiche chiuse su una varietà Riemanniana compatta e l'esistenza di moti periodici per sistemi Hamiltoniani del second'ordine.
@article{RLIN_1993_9_4_4_243_0, author = {Carlo Carminati}, title = {Some perturbation results for non-linear problems}, journal = {Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni}, volume = {4}, year = {1993}, pages = {243-250}, zbl = {0799.58063}, mrnumber = {1269614}, language = {en}, url = {http://dml.mathdoc.fr/item/RLIN_1993_9_4_4_243_0} }
Carminati, Carlo. Some perturbation results for non-linear problems. Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni, Tome 4 (1993) pp. 243-250. http://gdmltest.u-ga.fr/item/RLIN_1993_9_4_4_243_0/
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