Geodesic
Some properties of collision and non-collision orbits for a class of singular dynamical systems
Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 3 (1992) no. 3, pp. 217-222.

Voir la notice de l'article provenant de la source Biblioteca Digitale Italiana di Matematica

We present some regularity properties of periodic solutions to a class of singular potential problems and we discuss the existence of a regular solution.
Si presentano alcune proprietà di regolarità delle soluzioni periodiche di una classe di sistemi dinamici con potenziale singolare e si prova l'esistenza di una soluzione regolare. 
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Coti Zelati, Vittorio; Serra, Enrico. Some properties of collision and non-collision orbits for a class of singular dynamical systems. Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni, Série 9, Tome 3 (1992) no. 3, pp. 217-222. http://geodesic.mathdoc.fr/item/RLIN_1992_9_3_3_a6/

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